343 citations · 3.7k across the 124 of their papers we have counts for
11 papers · 1 filter
Demographics of black holes at 100 R scales: accretion flows, jets, and shadows
Dhanya G. Nair, Neil M. Nagar, Venkatessh Ramakrishnan +87
Using the Event Horizon Telescope (EHT), the gravitationally lensed rings around the supermassive black holes (SMBHs) in Messier 87 (M87) and Sagittarius A* (Sgr A*) have now been…
A novel approach to understanding the link between supermassive black holes and host galaxies
Gabriel Sasseville, Julie Hlavacek-Larrondo, Samantha C. Berek +5
The strongest and most universal scaling relation between a supermassive black hole and its host galaxy is known as the relation, where is the mass of the…
Tripling the Census of Dwarf AGN Candidates Using DESI Early Data
Ragadeepika Pucha, S. Juneau, Arjun Dey +46
Using early data from the Dark Energy Spectroscopic Instrument (DESI) survey, we search for AGN signatures in 410,757 line-emitting galaxies. By employing the BPT emission-line rat…
Chandra Discovery of a Candidate Hyper-Luminous X-ray Source in MCG+11-11-032
Adi Foord, Francesca Civano, Julia M. Comerford +9
We present a multi-wavelength analysis of MCG+11-11-032, a nearby AGN with the unique classification of both a binary and a dual AGN candidate. With new Chandra observations we aim…
Value Added Catalog of physical properties of more than 1.3 million galaxies from the DESI Survey
M. Siudek, R. Pucha, M. Mezcua +50
Aims. We present an extensive catalog of the physical properties of more than a million galaxies within the Dark Energy Spectroscopic Instrument (DESI), one of the largest spectros…
Feeding Hidden Monsters: a Super-Eddington accreting Black Hole ~1.5 Gyr after the Big Bang
Hyewon Suh, Julia Scharwächter, Emanuele Paolo Farina +13
Recent James Webb Space Telescope (JWST) observations have revealed a surprisingly abundant population of faint, dusty active galactic nuclei (AGNs) at z~4-7. Together with the pre…
Optical Continuum Reverberation Mapping of a Candidate IMBH in a Nearby Seyfert 1 Galaxy
Wenwen Zuo, Hengxiao Guo, Jingbo Sun +25
To investigate the short-term variability and determine the size of the optical continuum emitting region of intermediate-mass black holes (IMBHs), we carried out high-cadence, mul…
Overmassive black holes at cosmic noon: linking the local and the high-redshift Universe
Mar Mezcua, Fabio Pacucci, Hyewon Suh +2
We report for the first time a sample of 12 supermassive black holes (SMBHs) hosted by low-mass galaxies at cosmic noon, i.e., in a redshift range consistent with the peak of star…
A link to the past: characterizing wandering black holes in Milky Way-type galaxies
Julen Untzaga, Silvia Bonoli, David Izquierdo-Villalba +2
A population of non-stellar black holes (100 M) has been long predicted to wander the Milky Way. We aim to characterize this population by using the L-Galaxies s…
Merger-Driven Growth of Intermediate-mass Black Holes: Constraints from Hubble Space Telescope Imaging of Hyper-luminous X-Ray Sources
R. Scott Barrows, Mar Mezcua, Julia M. Comerford +1
Hyper-luminous X-ray sources (HLXs) are extragalactic off-nuclear X-ray sources with luminosities exceeding the theoretical limit for accretion onto stellar-mass compact objects. M…
MaNGA AGN dwarf galaxies (MAD) -- I. A new sample of AGN in dwarf galaxies with spatially resolved spectroscopy
M. Mezcua, H. Domínguez Sánchez
The finding of active galactic nuclei (AGN) in dwarf galaxies has important implications for galaxy evolution and supermassive black hole formation models. Yet, how AGN in dwarf ga…