A Rapid Microlensing Event in the Q0957+561 A,B Gravitational Lens System
Astrophysics
2009-11-07 v1
Abstract
We re-analyze brightness data sampled intensively over 5 nights at two epochs separated by the quasar lens time delay, to examine the nature of the observed microlensing. We find strong evidence for a microlensing event with an amplitude of 1% and a time scale of twelve hours. The existence of such rapid microlensing, albeit at low amplitude, imposes constraints on the nature of the quasar and of the baryonic dark matter.
Cite
@article{arxiv.astro-ph/0303170,
title = {A Rapid Microlensing Event in the Q0957+561 A,B Gravitational Lens System},
author = {Wesley N. Colley and Rudolph E. Schild},
journal= {arXiv preprint arXiv:astro-ph/0303170},
year = {2009}
}