64 citations · 486 across the 44 of their papers we have counts for
4 papers · 1 filter
A 5.5-year robotic optical monitoring of Q0957+561: substructure in a non-local cD galaxy
V. N. Shalyapin, L. J. Goicoechea, R. Gil-Merino
New light curves of the gravitationally lensed double quasar Q0957+561 in the gr bands during 2008-2010 include densely sampled, sharp intrinsic fluctuations with unprecedentedly h…
Continuum reverberation mapping in a z = 1.41 radio-loud quasar
L. J. Goicoechea, V. N. Shalyapin, R. Gil-Merino +1
Q0957+561 was the first discovered gravitationally lensed quasar. The mirage shows two images of a radio-loud quasar at redshift z = 1.41. The time lag between these two images is…
Spectroscopy of lensing galaxies in the GTC era
Vyacheslav N. Shalyapin, Luis J. Goicoechea
We are using OSIRIS at the 10.4-m Gran Telescopio CANARIAS (GTC) to obtain spectra of faint galaxies close to multiply imaged quasars. We initially focused on the fields of HE 1413…
Time-domain studies of gravitationally lensed quasars (GLQs)
Luis J. Goicoechea, Vyacheslav N. Shalyapin
We present the overview and current results of an ongoing optical/NIR monitoring of seven GLQs with the 2-m Liverpool Robotic Telescope. The photometric data over the first seven y…