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A large population of over-massive black hole quasars at z=0.3-0.8 revealed by eROSITA
Johannes Buchner, Isabelle Gauger, Qiaoya Wu +14
In most galaxies, the central black hole accounts for no more than a percent of the total mass in stars. Recently, however, extremely over-massive black holes with ratios of 10% ha…
Discovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole
Lorena Hernández-García, Joheen Chakraborty, Paula Sánchez-Sáez +27
Quasi-periodic eruptions (QPEs) are rapid, recurring X-ray bursts from supermassive black holes, believed to result from interactions between accretion disks and surrounding matter…
An Intermediate Mass Black Hole Hidden Behind Thick Obscuration
Peter G. Boorman, Daniel Stern, Roberto J. Assef +12
Recent models suggest approximately half of all accreting supermassive black holes (SMBHs; 10 M) are expected to undergo intense growth phase…
A High Fraction of Heavily X-ray Obscured Active Galactic Nuclei
Christopher M. Carroll, Tonima T. Ananna, Ryan C. Hickox +5
We present new estimates on the fraction of heavily X-ray obscured, Compton-thick (CT) active galactic nuclei (AGNs) out to a redshift of 0.8. From a sample of 540 AGNs se…
The Chandra Deep Wide-Field Survey: A New Chandra Legacy Survey in the Boötes Field I. X-ray Point Source Catalog, Number Counts and Multi-Wavelength Counterparts
A. Masini, R. C. Hickox, C. M. Carroll +30
We present a new, ambitious survey performed with the Chandra X-ray Observatory of the 9.3 deg Boötes field of the NOAO Deep Wide-Field Survey. The wide field probes a statisti…
The Broadband X-ray Spectrum of the X-ray Obscured Type 1 AGN 2MASX J193013.80+341049.5
Nikita Kamraj, Mislav Baloković, Murray Brightman +6
We present results from modeling the broadband X-ray spectrum of the Type 1 AGN 2MASX J193013.80+341049.5 using NuSTAR, Swift and archival XMM-Newton observations. We find this sou…