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Coordinated X-ray and UV absorption within the accretion disk wind of the active galactic nucleus PG 1126-041
M. Giustini, P. Rodríguez Hidalgo, J. N. Reeves +14
Accretion disk winds launched close to supermassive black holes (SMBHs) are a viable mechanism to provide feedback between the SMBH and the host galaxy. We aim to characterize the…
Multiwavelength Characterization of the High Mass X-ray Binary Population of M33
Margaret Lazzarini, Kyros Hinton, Cheyanne Shariat +12
We present multi-wavelength characterization of 65 high mass X-ray binary (HMXB) candidates in M33. We use the Chandra ACIS survey of M33 (ChASeM33) catalog to select hard X-ray po…
Probing the disk-corona systems and broad line regions of changing-look quasars with X-ray and optical observations
Xiangyu Jin, John J. Ruan, Daryl Haggard +8
"Changing-look" quasars are a new class of highly variable active galactic nuclei that have changed their spectral type over surprisingly short timescales of just a few years. The…
The Wolf-Rayet + Black Hole Binary NGC 300 X-1: What is the Mass of the Black Hole?
Breanna A. Binder, Janelle M. Sy, Michael Eracleous +6
We present new X-ray and UV observations of the Wolf-Rayet + black hole binary system NGC 300 X-1 with the Chandra X-ray Observatory and the Hubble Space Telescope Cosmic Origins S…
Multiwavelength Characterization of the High Mass X-ray Binary Population of M31
Margaret Lazzarini, Benjamin F. Williams, Meredith Durbin +7
We present our analysis of high quality high mass X-ray binary (HMXB) candidates in M31 selected from point-source optical-counterpart candidates from the Chandra-PHAT survey catal…
Pulsar Timing Array Constraints on the Merger Timescale of Subparsec Supermassive Black Hole Binary Candidates
Khai Nguyen, Tamara Bogdanovic, Jessie C. Runnoe +4
We estimate the merger timescale of spectroscopically-selected, subparsec supermassive black hole binary (SMBHB) candidates by comparing their expected contribution to the gravitat…