64 citations · 750 across the 54 of their papers we have counts for
54 papers
The X-Ray Continuum Emission Region in the Lensed Quasar SDSS J133907.23+131038.6 is Much Smaller than the Accretion Disk
Christopher W. Morgan, James B. Margeson, Gilberto Garcia +4
We analyze microlensing variability in 15 seasons of optical monitoring data and 4 epochs of new X-ray observations of the doubly-imaged gravitationally lensed quasar SDSS J133907.…
Primordial black holes in the main lensing galaxy of FBQ 0951+2635
Daniel Isla, Luis J. Goicoechea, Ana Esteban-Gutiérrez +4
Although dark matter in galaxies may consist of elementary particles different from those that make up ordinary matter and that would be smoothly distributed (still undetected), th…
SDSS J1001+5027: Strong microlensing-induced chromatic variation caught in the act
Luis J. Goicoechea, Vyacheslav N. Shalyapin
We conducted long-term monitoring of the doubly imaged gravitationally lensed quasar SDSS J1001+5027 consisting of spectro-photometric observations separated by 120 days (tim…
FBQ 0951+2635: time delay and structure of the main lensing galaxy
Vyacheslav N. Shalyapin, Luis J. Goicoechea, Eleana Ruiz-Hinojosa
As there is a long-standing controversy over the time delay between the two images of the gravitationally lensed quasar FBQ 0951+2635, we combined early and new optical light curve…
Andromeda's Parachute: Time Delays and Hubble Constant
Vyacheslav N. Shalyapin, Luis J. Goicoechea, Karianne Dyrland +1
The gravitational lens system PS J0147+4630 (Andromeda's Parachute) consists of four quasar images ABCD and a lensing galaxy. We obtained -band light curves of ABCD in the 2017$…
Revisiting Andromeda's Parachute
Vyacheslav N. Shalyapin, Luis J. Goicoechea, Karianne Dyrland +1
The gravitational lens system PS J0147+4630 (Andromeda's Parachute) consists of four quasar images ABCD and a lensing galaxy. We obtained -band light curves of ABCD in the 2017$…