141 citations · 2.5k across the 96 of their papers we have counts for
13 papers · 1 filter
The LOFAR view of NGC 3998, a sputtering AGN
Sarrvesh S. Sridhar, Raffaella Morganti, Kristina Nyland +3
Low-power radio sources dominate the radio sky. They tend to be small in size and core-dominated, but the origin of their properties and the evolution of their radio plasma are not…
The role of environment in galaxy evolution in the SERVS Survey I: density maps and cluster candidates
Nick Krefting, Anna Sajina, Mark Lacy +10
We use photometric redshifts derived from new -band through 4.5m Spitzer IRAC photometry in the 4.8\,deg of the XMM-LSS field to construct surface density maps in the red…
Discovery of a close-separation binary quasar at the heart of a z~0.2 merging galaxy and its implications for low-frequency gravitational waves
Andy D. Goulding, Kris Pardo, Jenny E. Greene +3
Supermassive black hole (SMBH) binaries with masses of ~10^8--10^9 Msun are expected to dominate the contribution to the as-yet undetected gravitational wave background (GWB) signa…
A Trio of Massive Black Holes Caught in the Act of Merging
Xin Liu, Meicun Hou, Zhiyuan Li +6
We report the discovery of SDSS J0849+1114 as the first known triple Type 2 Seyfert nucleus. It represents three active black holes that are identified from new spatially resolved…
The Radio Universe at Low Surface Brightness: Feedback & accretion in the circumgalactic medium
Bjorn Emonts, Mark Lacy, Kristina Nyland +12
Massive galaxies at high-z are known to co-evolve with their circumgalactic medium (CGM). If we want to truly understand the role of the CGM in the early evolution of galaxies and…
Astro2020 Science White Paper: The Local Relics of of Supermassive Black Hole Seeds
Jenny E Greene, Aaron Barth, Andrea Bellini +18
We have compelling evidence for stellar-mass black holes (BHs) of ~5-80 M_sun that form through the death of massive stars. We also have compelling evidence for so-called supermass…
Intermediate-Mass Black Holes in Extragalactic Globular Clusters
Joan M. Wrobel, Zoltan Haiman, Kelly Holley-Bockelmann +6
Intermediate-mass black holes (IMBHs) have masses of about 100 to 100,000 solar masses. They remain elusive. Observing IMBHs in present-day globular clusters (GCs) would validate a…
Kiloparsec-scale Jets: Physics, Emission Mechanisms, and Challenges
Eric S. Perlman, Eileen Meyer, Jean Eilek +10
Jets are a ubiquitous part of the accretion process, created in AGN, by a coupling between the magnetic field near the central black hole and inflowing material. We point out what…
Relativistic Jets in the Accretion & Collimation Zone: New Challenges Enabled by New Instruments
Eric S. Perlman, Mark Birkinshaw, Matthias Kadler +9
Jets are a ubiquitous part of the accretion process, seen in a wide variety of objects ranging from active galaxies (AGN) to X-ray binary stars and even newly formed stars. AGN jet…
Investigating the Candidate Displaced Active Galactic Nucleus in NGC 3115
Megan L. Jones, Sarah Burke-Spolaor, Kristina Nyland +1
The nearby galaxy NGC 3115 contains a known radio-emitting, low-luminosity active galactic nucleus (AGN), and was recently claimed to host a candidate AGN displaced 14.3 pc from th…
The MBHBM* Project -- I: Measurement of the Central Black Hole Mass in Dwarf Galaxy NGC 3504 Using Molecular Gas Kinematics
Dieu D. Nguyen, Mark den Brok, Anil C. Seth +19
We present the first measurement of the mass of a supermassive black hole (SMBH) in the nearby double-barred spiral galaxy NGC 3504 as part of the Measuring Black Holes Below the M…
The Fundamental Plane of Black Hole Accretion and its Use as a Black Hole-Mass Estimator
Kayhan Gültekin, Ashley L. King, Edward M. Cackett +5
We present an analysis of the fundamental plane of black hole accretion, an empirical correlation of the mass of a black hole (), its 5 GHz radio continuum luminosity (),…
The parsec-scale structure of jet-driven HI outflows in radio galaxies
Raffaella Morganti, Robert Schulz, Kristina Nyland +4
Radio jets can play multiple roles in the feedback loop by regulating the accretion of the gas, by enhancing gas turbulence, and by driving gas outflows. Numerical simulations are…