I think that the work of Valery Kotov and his co-authors is fascinating and important. This work in progress is pulling together a list of his more recent publications and who has been citing them. I’ll add links to full papers as I build the library. See the recent threads here and here.
In 1968–2005 different observers (mainly, one of the authors—V.M. Lyuty) performed numerous measurements of luminosity of the nucleus of the Seyfert galaxy NGC 4151. It is shown that (a) luminosity of the object pulsated over 38 years with a period of 160.0106(7) min coinciding, within the error limits, with the well-known period P 0 = 160.0101(2) min of the enigmatic “solar” pulsations, and (b) when registering oscillations of luminosity of NGC 4151 nucleus with the P 0 period, time moments of observations must be reduced to the earth instead of the sun, i.e., to the reference frame of the observer. The coherent P 0 oscillation is characterized, therefore, by invariability of both frequency and phase with respect to redshift z and the earth’s orbital motion, respectively. From these results it, thus, follows that the coherent P 0 oscillation seems to be of a true cosmological origin. The P 0 period itself might represent a course of the “cosmic clock” related to the existence of an absolute time of the Universe in Newton’s comprehension.
V. A. KotovJournal: Bulletin of The Crimean Astrophysical Observatory , vol. 106, no. 1, pp. 137-151, 2010
The prolonged 2007–2009 minimum is a big surprise for solar physics. In order to reveal the causes, we analyze the variability of the general magnetic field (GMF) of the Sun as a star measured by CrAO and five other observatories since 1968 (more than 19000 daily field strengths B were obtained in 41 years). Sharp yearly mean extrema of the negative (S) field took place in 1969, 1990, and 2008, with the third extremum, in contrast to the two previous ones, having coincided with the sunspot minimum. This explains both the long duration of the minimum and the record (over the last 100 years) increase in the length of the Wolf cycle (no. 23) to 12 or more years. The S-field extrema followed with a period of 19.5 ± 1.1 yr—some mean between the 22.1 ± 0.3-yr sunspot cycle, the 18.6-yr saros, and the 19.9-yr Jupiter-Saturn conjunction period. It is pointed out that, for some unclear reason, the negative polarity dominated on the Sun in 1968–2008: the overall mean B = −0.021 ± 0.015 G. The existence of a second Sun that obeys the laws of quantum mechanics is hypothesized. The “quantum” model of the Sun-2 explains many properties of the “classical” Sun-1, including the coronal heating, cyclic activity, periodic variations in GMF, and its sector structure.Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 106, no. 1, pp. 137-151, 2010
V. A. KotovJournal: Bulletin of The Crimean Astrophysical Observatory , vol. 105, no. 1, pp. 119-128, 2009
It is shown that the planetary distances of the Solar System are distributed according to the L 0 resonance, where L 0 = cP 0 = 19.24 a.u. is the wavelength of the “cosmological oscillation” of the Universe (whose nature is unknown). Here, c is the speed of light and P 0 = 160 min is the period of pulsations of the Sun and the Universe, which turned out to be equal to 1/9 of the mean terrestrial day. Exoplanets do not exhibit the L 0 resonance; instead, they demonstrate on average a spatial resonance on a scale of 14.8 a.u., pointing to a mechanism of formation of exoplanetary systems which differs from the commonly accepted one (by the capture of “mesoplanets,” rather than from near-star nebulae). This indicates that the L 0 resonance is a specific feature just of the Solar System. The L 0 (P 0) aspect of the anthropic principle, realized only near the Sun, distinguishes our planetary system from a number of observed exoplanetary systems. This fact makes the anthropic principle in its strong formulation more evident, localizing its effectiveness. Probably, it is closely related to the appearance of life on the Earth, which unexpectedly, sadly, and charmingly makes any talks on extraterrestrial civilizations devoid of any prospect.Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 105, no. 1, pp. 119-128, 2009
V. A. KotovJournal: Bulletin of The Crimean Astrophysical Observatory , vol. 105, no. 1, pp. 45-55, 2009
During the last 40 years, the Crimean Astrophysical Observatory and five other observatories around the world have carried out more than 18 500 (daily) measurements of the mean magnetic field (MMF) of the Sun as a star. The main MMF periodicity is due to the equatorial rotation of the Sun with a synodic period of 26.92 ± 0.02 day (it was stable for decades, but “bifurcated” in the 23rd cycle). It is shown that (a) the average sidereal period of the equator, 25.122 ± 0.010 day, is in close resonant relations with orbital and axial rotations of Mercury (5: 2 and 5: 3, respectively); (b) the most powerful long period, 1.036 ± 0.007 years, is suspiciously close to the orbital period of the Earth and (c) coincides with the average synodic period of revolution of giant planets 1.036 ± 0.020 years; and (d) MMF reveals a significant period of 1.58 ± 0.02 years, which agrees, within errors, with the synodic period of Venus (1.60 years), and (e) a significant periodicity of 19.8 ± 2.5 years probably related to the 22-year magnetic cycle of the Sun. The nature of all these periodicities is mysterious. The assumption is made that the resonances originated at the early stages of formation of the Solar System, and their existence in the modern epoch is due to the specific features of the structure and dynamics of the central core of our star. It is found that the MMF level averaged over 40 years is practically zero, −0.018 ± 0.015 G. The anomalous behavior of the 23rd cycle is pointed out; this is expressed in (1) violation of the Gnevyshev-Ohl rule for the pair of cycles 22–23, (2) accelerated rotation of the solar equator by 1.2%, and (3) considerable increase in the cycle duration (not smaller than 11.5 years), as compared to the average cycle duration in the 20th century (11.5 years). The problem of the so called magnetic “monopole” of the Sun is briefly discussed.Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 105, no. 1, pp. 45-55, 2009
V. A. Kotov, V. I. HaneychukJournal: Bulletin of The Crimean Astrophysical Observatory , vol. 104, no. 1, pp. 45-51, 2008
Doppler measurements of the photosphere of the entire Sun carried out at the Crimean Astrophysical Observatory (CrAO) in 1974–2007 by the differential technique showed the presence of an enigmatic periodicity of P 1 = 159.967(4) min. The phase of this oscillation was constant over the entire 34-year of surveys and interval. The true nature of this phenomenon is unknown. Pulsation with the former period P 0 = 160.0101(15) min has been reliably detected only in the first nine years, from 1974 to 1982. It is noted that (a) the average amplitude of the P 1 oscillation in the first half of the data was nearly 34% higher than in the second half and (b) the beat period of 400(14) d of these two pulsations is equal within error to the Jovian synodic period (399 d). A hypothesis is discussed relating the P 1 oscillation to the superfast rotation of the inner solar core.Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 104, no. 1, pp. 45-51, 2008
Journal: Radiophysics and Quantum Electronics – RADIOPHYS QUANTUM ELECTRON , vol. 39, no. 10, pp. 807-810, 1996
One and the same period, P0=160.0101±0.0001min, was discovered in the global oscillation of the Sun and in the rapid variability of several active galactic nuclei (AGN). According to Kotov and Lyuty’s hypothesis , the P0 oscillation must have a cosmological nature, since the period is independent of the AGN redshift. The “universal” P0 osculation can represent a fundamental scale of “cosmic time,” that is, a true cosmological invariant which does not depend on the source moving with respect to the observer. The phenomenon of the P0 oscillation (the metrics of the Universe) brings the Big Bang paradigm into challenge.
Journal: Radiophysics and Quantum Electronics – RADIOPHYS QUANTUM ELECTRON , vol. 39, no. 10, pp. 807-810, 1996 DOI: 10.1007/BF02120960
V. A. Kotov
Measurements of the mean magnetic field of the Sun as a star (the line-of-sight component of the magnetic field of the visible hemisphere for a given day) carried out at six observatories are used to compile a catalog of the mean magnetic field for 1968–2006 (containing about 18 000 daily values). The cataloged data are compared with direct daily measurements of the absolute line-of-sight field made at the Kitt Peak Observatory in 2003–2006 (original data with a resolution of 1″ averaged over the solar disk). The true absolute mean fieldstrength averaged over the visible solar hemisphere is determined for 1968–2006 to be B 0 = 7.7 ± 0.2 G. This figure exceeds previous estimates by almost a factor of four. B 0 exhibits no appreciable slow trend over the entire 39-year interval, but varies substantially with the cycle. The period of this variation is 10.5 ± 0.7 yr, and its harmonic amplitude is 1.7 G. The magnetic flux of spots and active regions makes B 0 almost twice the field strength in the “normal” photosphere at the solar minimum, i.e., for the “quiet” Sun.Journal: Astronomy Reports – ASTRON REP , vol. 52, no. 5, pp. 419-428, 2008
V. A. Kotov
The theory of gravity says that a binary with orbital frequency ν should be a source of gravitational waves at the double frequency and higher harmonics. This implies that long-term exposure of an ensemble of binaries to gravity waves with frequency ν G can result in (a) a lack of binaries with frequencies near frequency ν G /2 and its higher harmonics (the effect of unstable orbits) and/or (b) an excess of binaries whose orbital frequencies are “absolutely” incommensurable with ν G /2 and its higher harmonics (the effect of stable orbits). It is assumed that the stable-orbit frequencies are almost equal to multiples of πν G /2 and ν G /2π, where π plays the role of a “perfect” factor ensuring the best antiresonance of binaries. The statistical analysis of frequencies of 5774 Galactic close binary systems (CBSs) with periods P less than 10 days is based on calculating the resonance spectrumthat indicates the best common multiple for a given set of frequencies with allowance for the factor π. The CBS distribution turns out to be modulated by the frequency ν G = 104.4(5) μHz, and this effect is the most pronounced for superfast and compact rotators, such as cataclysmic variables (CVs) and related objects. The frequency ν G is, within the error, equal to the “enigmatic” frequency ν0 = 104.160(1) μHz com discovered earlier in the power spectra of the Sun and brightness variations of some extragalactic sources. This confirms the existence of a “coherent cosmic oscillation” of the Universe with frequency ν0(ν G ). The new astrophysical phenomenon naturally explains an “CV period gap” at frequencies ≈πν G /3 (P ≈ 153 min) and maxima at the neighboring frequencies ≈πν G /2 and ≈πν G /4 (P ≈ 102 and ≈204 min, respectively). The remarkable and “mysterious” role of the transcendental number π for the world of binaries is emphasized, and the mystery of physical nature of the “universal” oscillation ν0(ν G ) is highlighted.Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 104, no. 1, pp. 125-136, 2008
V. A. Kotov
Significant discrepancies are often observed among the values of the mean magnetic field (MMF) of the Sun as a star observed by various instruments using various spectral lines. This is conventionally attributed to the measurement errors and “saturation” of a solar magnetograph in fine-structure photospheric elements with a strong magnetic field. Measurements of the longitudinal MMF performed in 1968–2006 at six observatories are compared in this paper. It is shown that the degree of discrepancy (slopes b of linear regression lines) varies significantly over the phase of the 11-year cycle. This gives rise to a paradox: the magnetograph calibration is affected by the state of the Sun itself. The proposed explanation is based on quantum properties of light, namely, nonlocality and “coupling” of photons whose polarization at the telescope-spectrograph output is determined by spacious parts of the solar disk. In this case, the degree of coupling, or “identity,” of photons depends on the field distribution in the photosphere and the instrument design (as Bohr said, “the instrument inevitably affects the result”). The “puzzling” values of slope b are readily explained by the dependence of the coupling on the solar-cycle phase. The very statistical nature of light makes discrepancies unavoidable and requires the simple averaging of data to obtain the best approximation of the actual MMF. A 39-year time series of the MMF absolute value is presented, which is indicative of significant variations in the magnitude of the solar magnetic fieldwith a cycle period of 10.5(7) yr.Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 104, no. 1, pp. 79-95, 2008
V. A. Kotov, L. M. LyutyNumerous U and V magnitude measurements were performed for the nucleus of the Seyfert galaxy NGC 4151 at the Crimean Laboratory of the SAI (Moscow University) in 1994–2005. Adding them to the previous data for 1968–1997 has led to a substantial increase in the confidence level of the light variations in NGC 4151 with a stable period of P G = 160.0108(7) min and a mean amplitude of 0.007 U mag (in the “active” state of the nucleus). The period of NGC 4151 agrees well with the period of 160.0101(15) min found previously in the oscillations of the Sun. It is treated as the period of a “coherent cosmic oscillation” independent of redshift z or as the period of “free cosmic vibrations” of the hydrogen atom, the main element of the Universe. The period and initial phase of the P G oscillation have been constant for 38 years of NGC 4151 observations. The new astrophysical phenomenon appears to be closely related to the quantum nonlocality of photons and is of particular interest in physics and cosmology.Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 103, no. 1, pp. 69-74, 2007
V. A. Kotov
In 1946, E. Sevin postulated the global vibrations of the Sun with a period P 0 = 1/9 day and a “wavelength” L 0 = c � P 0 = 19.24 AU and predicted the tenth planet at a mean distance of 4.0 � L 0 ≈ 77.0 AU from the Sun (c is the speed of light). The global vibrations of the Sun, precisely with the period of 1/9 day, were actually detected in 1974. Recently, the largest Kuiper Bell object 2003 UB313, or Eris, with an orbital semimajor axis ≈ 3.5 � L 0 ≈ 67.5 AU was discovered. We adduce arguments for the status of Eris as our tenth planet: (i) the object is larger and farther from the Sun than Pluto and (ii) the semimajor axis of Eris agrees well with the sequence of planetary distances that follows from the resonance spectrum of the Solar systemdimensions (with the scale L 0 and for all 11 orbits, including those of Pluto, Eris, and the asteroid belt). We point to a mistake of the Prague (2006) IAU Assembly, which excluded Pluto from the family of planets by introducing a new, highly controversial class of objects—“dwarf planets.”Journal: Bulletin of The Crimean Astrophysical Observatory , vol. 103, no. 1, pp. 75-81, 2007
V. A. KotovThe mean magnetic field (MMF) of the Sun-as-a-star was measured over the last 38 years by six observatories (about 17 000 MMF daily records, 1968 – 2005). The MMF power spectrum reveals the presence of an enigmatic 1.029(7) year periodicity whose origin requires explanation. We show that this quasi-annual variation is not produced by modulation of the MMF signal due to the annual change of the Earth’s helio-latitude (one-year change of visibility of the Sun’s polar regions) as commonly accepted. The nature of this new solar phenomenon is open for discussion.Journal: Solar Physics – SOL PHYS , vol. 239, no. 1, pp. 461-474, 2006
Journal: Astronomy & Astrophysics – ASTRON ASTROPHYS , vol. 403, no. 3, pp. 1115-1121, 2003
New data on the mean magnetic field of the Sun (MMFS) as a star measured at the Crimean Astrophysical Observatory in 1998-2001 are presented. The 34-year time series of the MMFS using similar data from three other observatories (1968-2001, with the total number of daily MMFS values N = 12 428), is considered. It is found that (a) the primary synodic period of the equatorial rotation of solar magnetic field, Psun = 26.929 +/- 0.015 days, did not vary over the last 34 years, but (b) the average intensity H0 of the photospheric large-scale fields, by modulus, decreased by about 4.5% (with a confidence level of about 80%). The conclusion is made that the longer, 90-year, cycle might be responsible for this potential gradual decrease of H0. The average curve of MMFS variation as plotted with the primary rotational period Psun demonstrates an obvious N-S asymmetry of polarities, perhaps associated with the quadrupole component and “magnetic disequilibrium” of the Sun as a whole.Keywords: Sun: magnetic fields, Sun: rotation
Full text link.
V. A. Kotov, I. V. SetyaevaData on the global magnetic field (GMF) of the Sun as a star for 1968–1999 are used to determine the correlation of the GMF with the radial component of the interplanetary magnetic field (IMF) |B r|; all data were averaged over a half year. The time variations in the GMF |H| are better correlated with variations in |B r|; than the results of extrapolating the field from the “source surface” to the Earth’s orbit in a potential model based on magnetic synoptic maps of the photosphere. Possible origins for the higher correlation between the GMF and IMF are discussed. For both the GMF and IMF, the source surface actually corresponds to the quiet photosphere—i.e., background fields and coronal holes—rather than to a spherical surface artificially placed ≈2.5 R ⊙ from the center of the Sun, as assumed in potential models (R ⊙ is the solar radius). The mean effective strength of the photospheric field is about 1.9 G. There is a nearly linear dependence between |H| and |B r|. The strong correlation between variations in |H| and |B r| casts doubt on the validity of correcting solar magnetic fields using the so-called “saturation” factor δ−1 (for magnetograph measurements in the λ 525.0 nm FeI line).Journal: Astronomy Reports – ASTRON REP , vol. 46, no. 3, pp. 246-254, 2002DOI: 10.1134/1.1463102
V. A. Kotov, I. V. KotovaWe consider measurements of the general magnetic field (GMF) of the Sun as a star at four world observatories from 1968 until 1999. We show that, within the error limits, the mean strength of the photospheric magnetic field H (of its longitudinal component, in magnitude) has not changed over the last 32 years. This is in conflict with the recent conclusion by Lockwood et al. (1999) that the solar coronal magnetic field increased by 40% from 1964 until 1996 and has almost doubled in the last 100 years. The causes of discrepancies in the results are discussed. At the same time, the GMF exhibits a natural 11-year variation associated with the solar cycle. The strength of the photospheric longitudinal magnetic field (in absolute value) averaged over 32 years is 0.46 G (at an rms GMF strength of 0.57 G). The mean GMF for all years of measurements had a south polarity: $$\bar H = – 0.030 \pm 0.018 G$$ . The difference from zero is statistically significant at 1.7σ (90%) and may be directly related to the outstanding problem of the solar magnetic “monopole.”Journal: Astronomy Letters-a Journal of Astronomy and Space Astrophysics – ASTRON LETT , vol. 27, no. 4, pp. 260-266, 2001DOI: 10.1134/1.1358384
Journal: Astronomical & Astrophysical Transactions , vol. 20, no. 3, pp. 505-508, 2001
Journal: Astronomical & Astrophysical Transactions , vol. 16, no. 1, pp. 15-30, 1998
V. A. Kotov, S. V. KotovJournal: Astronomical & Astrophysical Transactions , vol. 15, no. 1, pp. 185-191, 1998
Journal: Astrophysical Journal – ASTROPHYS J , vol. 488, no. 1, pp. 195-201, 1997
S. V. Kotov, V. A. KotovJournal: Astronomische Nachrichten – ASTRON NACHR , vol. 318, no. 2, pp. 121-128, 1997
The origin of pulsation of the Sun with period P0 ≈ 160 min is as yet unknown. Statistical treatment of data on the rotation of 43 ellipsoidal binary systems with Porb < 7 days showed that the most resonant (the most commensurable) frequency of these stars equals 104.6 ± 0.6 μHz (at ≈ 3.4 σ C. L.). …Published in 1997.
V. A. Kotov, S. V. KotovOne and the same period, P0=160.0101±0.0001min, was discovered in the global oscillation of the Sun and in the rapid variability of several active galactic nuclei (AGN). According to Kotov and Lyuty’s hypothesis , the P0 oscillation must have a cosmological nature, since the period is independent of the AGN redshift. The “universal” P0 osculation can represent …Journal: Radiophysics and Quantum Electronics – RADIOPHYS QUANTUM ELECTRON , vol. 39, no. 10, pp. 807-810, 1996
V. A. KotovThe Crimean observation of solar oscillations in 1974–1982 showed that the basic period of pulsation of the Sun hidden in its deep interior was equal to P0=160.0101±0.0001min. More recently, the period was changed to the new value P1=159.9662±0.0006min, which almost coincided with the annual sidelobe of the former period P0. The amplitude of …Journal: Radiophysics and Quantum Electronics – RADIOPHYS QUANTUM ELECTRON , vol. 39, no. 10, pp. 811-814, 1996
Journal: Astronomische Nachrichten – ASTRON NACHR , vol. 315, no. 5, pp. 333-342, 1994
V. A. Kotov, V. M. Lyuty
Journal: Monthly Notices of The Royal Astronomical Society – MON NOTIC ROY ASTRON SOC , vol. 392, no. 3, pp. 1159-1180, 2009
Journal: Advances in Space Research – ADV SPACE RES , vol. 43, no. 2, pp. 297-307, 2009
- Abstract. Oscillations of the ground pressure and Z-component of geomagnetic field with a
period of 160-min in December 2003 and March 2004 have been studied by regular measurements
carried out over the territory of Europe and Siberia. As the analysis has shown, in December 2003
these specific oscillations are manifested synchronously from Europe up to Siberia, preferentially
in the form of ‘packages’ (‘quanta’) consisting of two-five pulses. Their average amplitudes in
December 2003 are of 0.0115±0.0023 mb in the ground pressure and of 0.323±0.070 nT in
the Z-component. We suppose that the 160-min pulsations in those both terrestrial parameters
represent the effect of a gravitational wave of the same period coming from the Galaxy center.
Journal: Proceedings of The International Astronomical Union , vol. 5, no. S264, 2009
- FULL PAPER HERE.
Publications of Vasily Ivanovich Haneychuk
- Didkovsky L.V., Rhodes E.J., Jr., Dolgushin A.I., Haneychuk V.I., Johnson N.M., Korzennik S.G., Kotov V.A., Rose P.J., Tsap T.T. : “The first results of solar observations made in the Crimean Astrophysical Observatory using a magneto-optical filter”, 1996, Izv. Vuzov, ser. RADIOFIZIKA, Tom 39, No. 11-12, p. 1374-1380.
- Didkovsky L.V., Rhodes E.J., Jr., Jones A., Rose P., Scherrer P.H., Kosovichev A.G., Schou J., Reiter J., Kotov V.A., Tsap T.T., Haneychuk V.I., Dolgushin A.I., Andreev A.S. : “Mount Wilson Observatory – Crimean Astrophysical Observatory project: news from Crimea”, 1998, in: SOHO 6/GONG 98 Workshop “Structure and dynamics of the interior of the Sun and Sun-like stars”, Proc. Symp., ESA SP-418, p. 153-156.
- Haneychuk V.I., Didkovsky L.V. and HiDHN Team: “Accurate determination of the roll-angle for the helioseismological purposes”, 1998, in: SOHO 6/GONG 98 Workshop “Structure and dynamics of the interior of the Sun and Sun-like stars”, Proc. Symp., ESA SP-418, p. 205-207.
- Tsap T.T., Haneychuk V.I., Kotov V.A. : “Observations of low degree p-modes in the Crimean astrophysical observatory”, 1998, Izv. Krym. Astrofiz. Obs., Tom 94, p. 173-175.
- Tsap T.T., Haneychuk V.I., Kotov V.A. : “Observations of low-degree solar global oscillations in the Crimean astrophysical observatory”, 1998, Kinematika i fizika nebesnyh tel, Tom 14, No. 6, p. 520-530.
Solar Mean Magnetic Field
- Haneychuk V.I. : “Periodicity of the Solar mean magnetic field, 1968-1991”, 1995, Izv. Krym. Astrofiz. Obs., Tom 92, p. 84-89.
- Kotov V.A., Scherrer P.H., Howard R.F., Haneychuk V.I. : “Magnetic field of the Sun as a star: the Mount Wilson observatory catalog 1970-1982”, 1998, Astrophys. J. Suppl. Ser., 116, No. 1, p. 103-117.
- Kotov V.A., Demidov M.L., Haneychuk V.I., Tsap T.T. : “On consistency of measurements of the magnetic field of the Sun as a star and its annual variation”, 1998, Izv. Krym. Astrofiz. Obs., Tom 94, p. 110-117.
- Kotov V.A., Demidov M.L., Haneychuk V.I., Grigoryev V.M., Tsap T.T. : “25 years of investigation of the magnetic field of the Sun as a star”, 1998, Izv. Krym. Astrofiz. Obs., Tom 94, p. 118-122.
- Haneychuk V.I. : “Rotation of the solar mean magnetic field in 1968-1996”, 1998, in: SOHO 6/GONG 98 Workshop “Structure and dynamics of the interior of the Sun and Sun-like stars”, Proc. Symp., ESA SP-418, p. 797-802.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “New measurements of the mean magnetic field of the Sun and its rotation”, 1999, Astron. Zhurn., Tom 76, No. 3, p. 218-224.
- Haneychuk V.I. : “Rotation of solar mean magnetic field 1968-1996”, 1999, Astron. Zhurn., Tom 76, No. 5, p. 385-395.
- Haneychuk V.I. : “Variations of the solar mean magnetic field: rotation and 22-year cycle”, 2000, Izv. Krym. Astrofiz. Obs., Tom 96, p.176-187.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “On the Sun’s magnetic field prior to maximum of the cycle 23”, 2001, Izv. Krym. Astrofiz. Obs., Tom 97, p. 60-68.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “On the measurements of the magnetic disbalance of the Sun”, 2002, Kinematika i fizika nebesnyh tel, Tom 18, No. 3, p. 205-216.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “Why does the Sun look like a magnetic monopole?”, in: Proceedings of the 1st Potsdam Thinkshop “Sunspots & Starspots”, Eds., Strassmeier K.G & Washuettl A., Astrophysical Institute Potsdam, 2002, p. 137-138.
- Haneychuk V.I., Kotov V.A., Tsap T.T. : “On stability of rotation of the mean magnetic field of the Sun”, Astron. Astrophys., 2003, Vol. 403, No. 3, p. 1115-1121.
- Gopasyuk S.I., Lyamova G.V., Khanejchuk V.I. : “Torsional oscillations of sunspots and rotation of subphotospheric layers of the Sun”, 1988, Izv. Krym. Astrofiz. Obs., Tom 79, p. 34-41.
- Tsvetkov L.I., Baranov N.V., Granat A.D., Khanejchuk V.I. : “Observations and analysis of radio emission pulsations of solar coronal holes at wavelenght 2.2, 2.8 and 3.5 cm”, 1997, Kinematika i fizika nebesnyh tel, Tom 13, No. 2, p. 12-20.
- Haneychuk V.I., Didkovsky L.V. : “Torsional Oscillations in Sunspots Derived from SOHO/MDI Data”, 2003, In: Proceedings of SOHO 12/GONG+ 2002 Conference “Local and Global Helioseismology: The Present and Future”, ESA SP-517, p. 291-294.
- Didkovsky L.V., Haneychuk V.I. : “The use of the computer IBM PC XT for data storage system at the Solar Tower Telescope”, 1992, Izv. Krym. Astrofiz. Obs., Tom 86, p. 198-202.
Problem of the solar 160 min oscillation
- Kotov V.A., Didkovsky L.V., Hanechyk V.I. : “Period of 160 minutes in the differential measurements of solar brightness (1976-1987)” 1991, Izv. Krym. Astrofiz. Obs., Tom 83, p. 34-49.
- Kotov V.A., Tsap T.T., Haneychuk V.I. : “160-min pulsation of the Sun: new observational results”, 1991, Solar Phys., V. 133, p. 95-102.
- Kotov V.A., Demidov M.L., Grigoryev V.M., Haneychuk V.I., Tsap T.T. : “Fast periodic fluctuations of the global magnetic field of the Sun”, 1992, Izv. Krym. Astrofiz. Obs., Tom 84, p. 163-171.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “To the probing of the solar interior: pulsation of the Sun and 22-year cycle”, 1992, Izv. Krym. Astrofiz. Obs., Tom 85, p. 3-15.
- Kotov V.A., Scherrer P.H., Hoeksema J.T., Haneychuk V.I., Tsap T.T. : “The search for 160-min oscillations in the Stanford and Crimean solar velocity observations, 1974-1991”, 1993, Proc. Symp.“GONG 1992: Seismic Investigation of the Sun and Stars”, p. 293-296.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “Summary of the Crimean 20-year observations of solar global oscillations”, 1995, Proc. Symp. “GONG’94: helio- and astero-seismology from the Earth and Space”, eds. R.G. Ulrich, E.J. Rhodes, Jr., and W. Dappen, p. 82-85.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “Oscillations of the Sun and new evidences of rapid rotation of the central solar core”, 1995, Izv. Krym. Astrofiz. Obs., Tom 92, p. 110-113.
- Kotov V.A., Haneychuk V.I., Tsap T.T., Hoeksema J.T. : “The splitting or disappearence of the solar 160-min mode?”, 1997, Solar Phys., V. 176, No. 1, p. 45-57.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “About the high limit of 160-minute solar oscillation amplitude in 1982-1989”, 1998, Izv. Krym. Astrofiz. Obs., Tom 94, p. 144-151.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “Oscillations of the Sun from the CrAO data 1974-1994”, 1998, Izv. Krym. Astrofiz. Obs., Tom 94, p. 176-179.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “Is the 160-minute mode of the Sun returning?”, 1998, Izv. Krym. Astrofiz. Obs., Tom 95, p. 5-13.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “Oscillations of the Sun with a period of 159.966 minutes in the crimean 25-year observations”, 2000, Kinematika i fizika nebesnyh tel, Tom 16, No. 1, p. 49-59.
- Kotov V.A., Haneychuk V.I., Tsap T.T. : “Oscillations of the Sun in the year 1999”, 2000, Izv. Krym. Astrofiz. Obs., Tom 96, p. 188-193.
Problem of 160-min oscillation in the Active Galactic Nuclei
- Kotov V.A., Lyuty V.M., Haneychuk V.I. : “New evidences of the 160-minute oscillations in active galactic nuclei”, 1993, Izv. Krym. Astrofiz. Obs., Tom 88, p. 47-59.
- Kotov V.A., Haneychuk V.I., Lyuty V.M.: “Rapid variability of active galactic nuclei: The 160 min periodicity in NGC 3516, NGC 4151 and Quasar 3C 273”, 1994, Astron. Nachr., V. 5, p. 333-342.
- Kotov V.A., Larionov M.G., Lyuty V.M., Haneychuk V.I. : “Universal oscillations of the Sun and active galactic nuclei and an attempt of interpretation”, 1995, Izv. Krym. Astrofiz. Obs., Tom 92, p. 126-128.
- Kotov V.A., Lyuty V.M., Haneychuk V.I. : “Periodic P0-oscillations of the Sun and ten AGN’s and possibility for cosmological explanation”, 1996, Izv. Krym. Astrofiz. Obs., Tom 93, p. 90-101.
- Kotov V.A., Lyuty V.M., Haneychuk V.I., Merkulova N.I., Metik L.P., Metlov V.G. : “The long-term periodic oscillation of the NGC 4151 nucleus”, 1997, Astrophys. J., V. 488, No. 1. p. 195-201.
- Kotov V.A., Lyuty V.M., Merkulova N.I., Metik L.P., Metlov V.G., Haneychuk V.I. : “New data on the P0-oscillation of the nucleus of the Seyfert galaxy NGC 4151″, 1998, Kinematika i fizika nebesnyh tel, Tom 14, No. 1, p. 67-76.
- Kotov V.A., Lyuty V.M., Haneychuk V.I., Merkulova N.I., Metik L.P., Metlov V.G. : “Evidence for a cosmological oscillation of the nucleus of the Seyfert galaxy NGC 4151”, 1998, Astron. Astrophys. Trans., V. 16, p. 15-30.
- Kotov V.A., Lyuty V.M., Merkulova N.I., Metik L.P., Haneychuk V.I. : “The 160-minute oscillations of active galactic nuclei: new data for 3C 273 and NGC 4151”, 1998, Izv. Krym. Astrofiz. Obs., Tom 94, p. 123-133.
- Kotov V.A., Lyuty V.M., Metlov V.G., Haneychuk V.I. : “Two states of the nucleus of the NGC 4151 galaxy, quiet and active”, 2000, Kinematika i fizika nebesnyh tel, Tom 16, No. 6, p. 558-569.
- Kotov V.A., Lyuty V.M., Haneychuk V.I., Merkulova N.I., Metik L.P. : “To the search for true nature of the 160-minute oscillation: active nucleus of the Seyfert galaxy NGC 4151”, 2002, Izv. Krym.