Binary events and extragalactic planets in pixel microlensing

Details Binary events and extragalactic planets in pixel microlensing Binary events and extragalactic planets in pixel microlensing

1999-09-30

arxiv.org/abs/astro-ph/9909509v4

Astrophys. J. 559, 41 (2001)

Astronomy and Astrophysics

Astrophysics

11 pages, 8 figures, version to appear in ApJ combined with astro-ph/9909510

Scientific paper

10.1086/322402

Pixel microlensing, i.e. gravitational microlensing of unresolved stars, can be used to explore distant stellar systems, and as a bonus may be able to detect extragalactic planets. In these studies, binary-lens events with multiple high-magnification peaks are crucial. Considering only those events which exhibit caustic crossings, we estimate the fraction of binary events in several example pixel microlensing surveys and compare them to the fraction of binary events in a classical survey with resolved stars. We find a considerable enhancement of the relative rate of binary events in pixel microlensing surveys, relative to surveys with resolved sources. We calculate the rate distribution of binary events with respect to the time between caustic crossings. We consider possible surveys of M31 with ground-based telescopes and of M87 with HST and NGST. For the latter, a pixel microlensing survey taking one image a day may observe of order one dozen binary events per month.

Affiliated with

Also associated with

No associations

Rating

Binary events and extragalactic planets in pixel microlensing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Binary events and extragalactic planets in pixel microlensing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Binary events and extragalactic planets in pixel microlensing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-570425