A New Microlensing Event in the Doubly-Imaged Quasar Q0957+561

Details A New Microlensing Event in the Doubly-Imaged Quasar Q0957+561 A New Microlensing Event in the Doubly-Imaged Quasar Q0957+561

2011-07-05

arxiv.org/abs/1107.0982v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Replaced with accepted version. Minor adjustments to text but conclusions unchanged. Data in Table 2 have been updated and tab

Scientific paper

We present evidence for ultraviolet/optical microlensing in the gravitationally lensed quasar Q0957+561. We combine new measurements from our optical monitoring campaign at the United States Naval Observatory, Flagstaff (USNO) with measurements from the literature and find that the time-delay-corrected r-band flux ratio m_A - m_B has increased by ~0.1 magnitudes over a period of five years beginning in the fall of 2005. We apply our Monte Carlo microlensing analysis procedure to the composite light curves, obtaining a measurement of the optical accretion disk size, log {(r_s/cm)[cos(i)/0.5]^{1/2}} = 16.2^{+0.5}_{-0.6}, that is consistent with the quasar accretion disk size - black hole mass relation.

Affiliated with

Also associated with

No associations

Rating

A New Microlensing Event in the Doubly-Imaged Quasar Q0957+561 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 A New Microlensing Event in the Doubly-Imaged Quasar Q0957+561, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A New Microlensing Event in the Doubly-Imaged Quasar Q0957+561 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-677192