Simulation of a strategy for the pixel lensing of M87 using the Hubble Space Telescope

Дата и время публикации : 2011-08-21T16:11:34Z

Авторы публикации и институты :
Sedighe Sajadian
Sohrab Rahvar

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 8 pages, 9 figures, accepted in MNRAS
Первичная категория: astro-ph.GA

Все категории : astro-ph.GA, astro-ph.CO

Краткий обзор статьи: In this work, we propose a new strategy for the pixel-lensing observation of M87 in the Virgo cluster using the {it Hubble Space Telescope} (HST). In contrast to the previous observational strategy by Baltz et al., we show that a few days intensive observation with the duration of $sim 90 $min in each HST orbit will increase the observational efficiency of the high-magnification events by more than one order of magnitude. We perform a Monte-Carlo simulation for this strategy and we show that the number of high magnification microlensing events will increase at the rate of 4.2 event per day with a typical transit time scale of 16 h. We also examine the possibility of observing mini-halo dark matter structures using pixel lensing.

Category: Physics