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Chandra Observations of Candidate Sub-Parsec Binary Supermassive Black Holes
Sep 16, 2020
Daniel Stern, 2020, "Chandra Observations of Candidate Sub-Parsec Binary Supermassive Black Holes", https://doi.org/10.48577/jpl.II0DEP, Astrophysical Journal, JPL Open Repository
We present analysis of Chandra X-ray observations of seven quasars that were identified as candi- date sub-parsec binary supermassive black hole (SMBH) systems in the Catalina Real-Time Transient Survey (CRTS) based on apparent periodicity in their optical light curves. Simulatio...
SWIFT MONITORING OF M51: A 38-DAY SUPER-ORBITAL PERIOD FOR THE PULSAR ULX7 AND A NEW TRANSIENT ULX
Sep 14, 2020
Daniel Stern, 2020, "SWIFT MONITORING OF M51: A 38-DAY SUPER-ORBITAL PERIOD FOR THE PULSAR ULX7 AND A NEW TRANSIENT ULX", https://doi.org/10.48577/jpl.SPIQJR, Astrophysical Journal, JPL Open Repository
We present the results from a monitoring campaign made with the Neil Gehrels Swift Observatory of the M51 galaxies, which contain several variable ultraluminous X-ray sources (ULXs). The ongoing campaign started in May 2018, and we report here on ∼ 1.5 years of observations. The...
A REDSHIFT FOR THE FIRST EINSTEIN RING, MG 1131+0456
May 11, 2020
Daniel Stern, 2020, "A REDSHIFT FOR THE FIRST EINSTEIN RING, MG 1131+0456", https://doi.org/10.48577/jpl.XLJNQS, The Astrophysical Journal Letters, JPL Open Repository
MG 1131+0456 is a radio-selected gravitational lens, and is the first known Einstein ring. Discovered in 1988, the system consists of a bright (S74 MHz = 3.7 Jy) radio source imaged into a ring and two compact, flat-spectrum components separated by 2.′′1. The ring is optically fa...
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