Results 31 to 40 of about 189,366 (258)

Black hole masses from emission‐line widths

Astronomische Nachrichten, Volume 343, Issue 1-2, January-February 2022., 2022
Abstract Reverberation mapping and scaling relationships based on reverberation results provide the underpinning of all estimates of quasar black hole masses. When applying these scaling relationships, there are potential pitfalls that are widely unappreciated and can result in biases that can, in turn, lead to systematic errors in the black hole mass ...
Elena Dalla Bontà, Bradley M. Peterson
wiley   +1 more source

Morphologies of z~0.7 AGN host galaxies in CANDELS : no trend of merger incidence with AGN luminosity [PDF]

, 2014
PS would like to acknowledge funding through grant ASI I/005/11/0. DKoo would like to acknowledge funding through grant NSF AST-0808133. SJ acknowledges financial support from the EC through an ERC grant StG-257720.The processes that trigger active ...
Bell, E.~F., Chang, Y.-Y., Conselice, C.~J., Croton, D., Dahlen, T., Dekel, A., Faber, S.~M., Grogin, N., Guo, Y., Hamann, F., Hamilton, T., Hopkins, P.~F., Juneau, S., Kartaltepe, J., Kocevski, D., Koekemoer, A., Koo, D.~C., Lotz, J., McGrath, E.~J., McIntosh, D., Mozena, M., Rosario, D.~J., Santini, P., Somerville, R., van der Wel, A., Villforth, C., Wild, V.   +26 more
core   +7 more sources

High‐Energy Neutrinos from the Cosmos

Annalen der Physik, Volume 533, Issue 11, November 2021., 2021
The IceCube Neutrino Observatory is the first detector of its kind, designed to observe the cosmos from deep within the South Pole ice. It consists of a cubic kilometer of instrumented transparent ice transformed into a Cherenkov detector. IceCube's first decade of operations has yielded breakthrough results, including the discovery of very high energy
Francis Halzen
wiley   +1 more source

CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3

The Astrophysical Journal, 2023
We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to ...
Bren E. Backhaus, Joanna S. Bridge, Jonathan R. Trump, Nikko J. Cleri, Casey Papovich, Raymond C. Simons, Ivelina Momcheva, Benne W. Holwerda, Zhiyuan Ji, Intae Jung, Jasleen Matharu   +10 more
doaj   +1 more source

Peaked sources and narrow‐line Seyfert 1s: A love story

Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1066-1070, November-December 2021., 2021
Abstract The first similarities between peaked sources (PS) and narrow‐line Seyfert 1 (NLS1) galaxies were noticed already 20 years ago. Nowadays, it is known that several sources can share both classifications, and that part of the parent population of γ‐ray emitting NLS1s could be hiding among PS.
Marco Berton, Emilia Järvelä
wiley   +1 more source

AGN in dusty hosts: implications for galaxy evolution [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
We present strong empirical evidence for a physical connection between the occurrence of a starburst (SB) and a luminous AGN phase. Drawing infrared (IR), X-ray, and optically selected samples from COSMOS, we find that the locus of type-2 AGN hosts in the optical colour-magnitude (U-V/V) and colour-colour (U-V/V-J) space significantly overlaps with ...
Symeonidis, M., Kartaltepe, J., Salvato, M., Bongiorno, A., Brusa, M., Page, M. J., Ilbert, O., Sanders, D., Wel, A.   +8 more
openaire   +6 more sources

The impact of young radio jets traced by cold molecular gas

Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1135-1139, November-December 2021., 2021
Abstract Ranging from a few pc to hundreds of kpc in size, radio jets have, during their evolution, an impact on their gaseous environment on a large range of scales. While their effect on larger scales is well established, it is now becoming clear that they can also strongly affect the interstellar medium (ISM) inside the host galaxy.
Raffaella Morganti, Tom Oosterloo, Suma Murthy, Clive Tadhunter   +3 more
wiley   +1 more source

Extremely inverted peaked spectrum radio sources

Astronomische Nachrichten, Volume 342, Issue 9-10, Page 1126-1129, November-December 2021., 2021
Abstract We report our ongoing search for extremely inverted spectrum compact radio galaxies, for which the defining feature in the radio spectrum is not the spectral peak, but instead the slope of the spectrum () in the high‐opacity (i.e., lower frequency) part of the radio spectrum.
Mukul Mhaskey, Surajit Paul, Gopal Krishna   +2 more
wiley   +1 more source

AGN host galaxies [PDF]

New Astronomy Reviews, 2008
A series of four lectures presented at the 2007 summer school on "Active Galactic Nuclei at the highest angular resolution: theory and observations" held in Torun, Poland.
openaire   +3 more sources

The bulge-disc decomposition of AGN host galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
We present the results from a study of the morphologies of moderate luminosity X-ray selected AGN host galaxies in comparison to a carefully mass-matched control sample at 0.5 < z < 3 in the CANDELS GOODS-S field. We apply a multi-wavelength morphological decomposition analysis to these two samples and report on the differences between the ...
V. A. Bruce, J. S. Dunlop, A. Mortlock, D. D. Kocevski, E. J. McGrath, D. J. Rosario   +5 more
openaire   +4 more sources