A closer look at the quadruply lensed quasar PSOJ0147: spectroscopic redshifts and microlensing effect

Abstract

I present timely spectroscopic follow-up of the newly discovered, quadruply lensed quasar PSOJ0147 from the Pan-STARRS 1 survey. The newly acquired optical spectra with GMOS onboard the Gemini north telescope allow us to pin down the redshifts of both the foreground lensing galaxy and the background lensed quasar to be z=0.572 and 2.341, providing firm basis for cosmography with future high cadence photometric monitoring. I also inspect difference spectra from two of the quasar images, revealing the microlensing effect. Long-term spectroscopic follow-ups will shed lights on the structure of the AGN and its environment.

arXiv comment5 pages, 3 figures, 1 table, MNRAS accepted

References in corpus (11)

• A 2.4% Determination of the Local Value of the Hubble Constant
• The Pan-STARRS1 Surveys
• H0LiCOW V. New COSMOGRAIL time delays of HE0435-1223: $H_0$ to 3.8% precision from strong lensing in a flat $\Lambda$CDM model
• H0LiCOW I. $H_0$ Lenses in COSMOGRAIL's Wellspring: Program Overview
• iPTF16geu: A multiply imaged, gravitationally lensed type Ia supernova
• Microlensing of the broad line region in 17 lensed quasars
• H0LiCOW III. Quantifying the effect of mass along the line of sight to the gravitational lens HE 0435-1223 through weighted galaxy counts
• Gravitational lens time delays for distant supernovae: break the degeneracy between radial mass profiles and the Hubble constant
• Interpreting the strongly lensed supernova iPTF16geu: time delay predictions, microlensing, and lensing rates
• Discovery of the first quadruple gravitationally lensed quasar candidate with Pan-STARRS
• Accurate spectroscopic redshift of the multiply lensed quasar PSOJ0147 from the Pan-STARRS survey

Cited by in corpus (4)

• Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 13 quadruply+ imaged quasars
• A Search for Gravitationally Lensed Quasars and Quasar Pairs in Pan-STARRS1: Spectroscopy and Sources of Shear in the Diamond 2M1134$-$2103
• Gravitational Lens System PS J0147+4630 (Andromeda's Parachute): Main Lensing Galaxy and Optical Variability of the Quasar Images
• New Dynamical Measurements from a Lensed Quasar Sample: Joint Analysis Constrains the Mass Profile Evolution of Lens Galaxies