Things that wink in the night
Analysis of Moon impact flashes detected during the 2012 and 2013 Perseids
José M. Madiedo, José L. Ortiz, Faustino Organero, Leonor Ana-Hernández, Fernando Fonseca, Nicolás Morales and Jesús Cabrera-Caño
A&A, 577 (2015) A118
Published online: 13 May 2015
DOI: http://dx.doi.org/10.1051/0004-6361/201525656 (open access on registration)
We present the results of our Moon impact flash detection campaigns performed around the maximum activity period of the Perseid meteor shower in 2012 and 2013. Just one flash produced by a Perseid meteoroid was detected in 2012 because of very unfavorable geometric conditions, but 12 flashes were confirmed in 2013. The visual magnitude of the flashes ranged between 6.6 and 9.3. A luminous efficiency of 1.8×10 -3 has been estimated for meteoroids from this stream. According to this value, impactor masses would range between 1.9 and 190 g. In addition, we propose a criterion for establishing, from a statistical point of view, the likely origin of impact flashes recorded on the lunar surface.
I wonder what a lunar orbiter could add. A spectroscopic analysis might be useful although I doubt whether suitable instruments would be in orbit.
Post by Tim