A Strong X-Ray Flux Ratio Anomaly in the Quadruply Lensed Quasar PG 1115+080
| dc.creator | Pooley, David | |
| dc.creator | Blackburne, Jeffrey A. | |
| dc.creator | Rappaport, Saul | |
| dc.creator | Schechter, Paul L. | |
| dc.creator | Fong, Wen-fai | |
| dc.date | 2006-04-06 | |
| dc.date | 2006-05-16 | |
| dc.date.accessioned | 2026-07-07T10:43:46Z | |
| dc.date.available | 2026-07-07T10:43:46Z | |
| dc.description | PG 1115+080 is a quadruply lensed quasar at z=1.72 whose image positions are well fit by simple models of the lens galaxy (at z=0.31). At optical wavelengths, the bright close pair of images exhibits a modest flux ratio anomaly (factors of ~1.2-1.4 over the past 22 years) with respect to these same models. We show here that as observed in X-rays with Chandra, the flux ratio anomaly is far more extreme, roughly a factor of 6. The contrasting flux ratio anomalies in the optical and X-ray band confirm the microlensing hypothesis and set a lower limit on the size of the optical continuum emission region that is \~10-100 times larger than expected from a thin accretion disk model. | |
| dc.description | 6 pages, slightly revised, accepted to ApJ | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0604152 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0604152 | |
| dc.identifier | Astrophys.J.648:67-72,2006 | |
| dc.identifier | doi:10.1086/505860 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182361 | |
| dc.subject | Astrophysics | |
| dc.title | A Strong X-Ray Flux Ratio Anomaly in the Quadruply Lensed Quasar PG 1115+080 | |
| dc.type | text |