Bibcode
Guerras, E.; Mediavilla, E.; Jimenez-Vicente, J.; Kochanek, C. S.; Muñoz, J. A.; Falco, E.; Motta, V.; Rojas, K.
Bibliographical reference
The Astrophysical Journal, Volume 778, Issue 2, article id. 123, 6 pp. (2013).
Advertised on:
12
2013
Journal
Citations
21
Refereed citations
19
Description
We measure the differential microlensing of the UV Fe II and Fe III
emission line blends between 14 quasar image pairs in 13 gravitational
lenses. We find that the UV iron emission is strongly microlensed in
four cases with amplitudes comparable to that of the continuum.
Statistically modeling the magnifications, we infer a typical size of
r_s\sim 4\sqrt{M/M_\odot } light-days for the Fe line-emitting regions,
which is comparable to the size of the region generating the UV
continuum (~3-7 light-days). This may indicate that a significant part
of the UV Fe II and Fe III emission originates in the quasar accretion
disk.
Related projects
Relativistic and Theoretical Astrophysics
Introduction Gravitational lenses are a powerful tool for Astrophysics and Cosmology. The goals of this project are: i) to obtain a robust determination of the Hubble constant from the time delay measured between the images of a lensed quasar; ii) to study the individual and statistical properties of dark matter condensations in lens galaxies from
Evencio
Mediavilla Gradolph