Results 1 to 10 of about 10,586,291 (388)

Quasar Luminosity Function at z = 7 [PDF]

The Astrophysical Journal Letters, 2023
We present the quasar luminosity function (LF) at z = 7, measured with 35 spectroscopically confirmed quasars at 6.55 < z < 7.15. The sample of 22 quasars from the Subaru High- z Exploration of Low-Luminosity Quasars (SHELLQs) project, combined with 13 ...
Yoshiki Matsuoka, Masafusa Onoue, Kazushi Iwasawa, Michael A. Strauss, Nobunari Kashikawa, Takuma Izumi, Tohru Nagao, Masatoshi Imanishi, Masayuki Akiyama, John D. Silverman, Naoko Asami, James Bosch, Hisanori Furusawa, Tomotsugu Goto, James E. Gunn, Yuichi Harikane, Hiroyuki Ikeda, Kohei Inayoshi, Rikako Ishimoto, Toshihiro Kawaguchi, Satoshi Kikuta, Kotaro Kohno, Yutaka Komiyama, Chien-Hsiu Lee, Robert H. Lupton, Takeo Minezaki, Satoshi Miyazaki, Hitoshi Murayama, Atsushi J. Nishizawa, Masamune Oguri, Yoshiaki Ono, Taira Oogi, Masami Ouchi, Paul A. Price, Hiroaki Sameshima, Naoshi Sugiyama, Philip J. Tait, Masahiro Takada, Ayumi Takahashi, Tadafumi Takata, Masayuki Tanaka, Yoshiki Toba, Shiang-Yu Wang, Takuji Yamashita   +43 more
doaj   +2 more sources

On the normalized FRB luminosity function [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
Thirty-three fast radio bursts (FRBs) had been detected by March 2018. Although the sample size is still limited, meaningful statistical studies can already be carried out. The normalised luminosity function places important constraints on the intrinsic power output, sheds light on the origin(s) of FRBs, and can guide future observations. In this paper,
Bing Zhang, Bing Zhang, Rui Luo, Kejia Lee, Kejia Lee, Duncan R. Lorimer   +5 more
openaire   +6 more sources

Characterizing the luminosity components of luminous infrared galaxies in multi-wavelength from the X-ray to the far-infrared [PDF]

Scientific Reports
We characterize luminosity components of Ultra/Luminous Infrared Galaxies (U/LIRGs) in multi-wavelength from the X-ray to far-infrared. A set of 63 AGN U/LIRGs was selected where these galaxies are powered by a central active galactic nucleus (AGN ...
Abdallah A. M. Ali, Kamel A. K. Gadallah, Osama. M. Shalabiea, Mohamed. M. Beheary   +3 more
doaj   +2 more sources

The white dwarf luminosity function [PDF]

New Astronomy Reviews, 2016
White dwarfs are the final remnants of low- and intermediate-mass stars. Their evolution is essentially a cooling process that lasts for $\sim 10$ Gyr. Their observed properties provide information about the history of the Galaxy, its dark matter content and a host of other interesting astrophysical problems.
Enrique García-Berro, Terry D. Oswalt
openaire   +5 more sources

The CNOC2 Field Galaxy Luminosity Function. I. A Description of Luminosity Function Evolution [PDF]

The Astrophysical Journal, 1999
We examine the evolution of the galaxy luminosity function (LF) using a sample of over 2000 galaxies, with 0.12 < z < 0.55 and 17.0 < Rc < 21.5, drawn from the Canadian Network for Observational Cosmology Field Galaxy Redshift Survey (CNOC2), at present the largest such sample at intermediate redshifts. We use UBVRcIc photometry to classify
H. Lin, H. K. C. Yee, R. G. Carlberg, S. L. Morris, Marcin Sawicki, David R. Patton, Greg Wirth, C. W. Shepherd   +7 more
openalex   +4 more sources

The evolution of the galaxy UV luminosity function at redshifts z ≃ 8 – 15 from deep JWST and ground-based near-infrared imaging [PDF]

Monthly notices of the Royal Astronomical Society, 2022
We reduce and analyse the available JWST ERO and ERS NIRCam imaging (SMACS0723, GLASS, CEERS) in combination with the latest deep ground-based near-infrared imaging in the COSMOS field (provided by UltraVISTA DR5) to produce a new measurement of the ...
C. Donnan, D. McLeod, J. Dunlop, R. McLure, A. Carnall, R. Begley, F. Cullen, M. Hamadouche, R. Bowler, D. Magee, H. McCracken, B. Milvang-Jensen, A. Moneti, T. Targett   +13 more
semanticscholar   +1 more source

The Form of the Luminosity Function

The Astrophysical Journal, 1924
Frederick H. Seares
openalex   +3 more sources

The Evolution of the Lyman-alpha Luminosity Function during Reionization [PDF]

Astrophysical Journal, 2021
The time frame in which hydrogen reionization occurred is highly uncertain, but can be constrained by observations of Lyman-alpha (Lyα) emission from distant sources.
Alexa M. Morales, C. Mason, Sean Bruton, M. Gronke, F. Haardt, C. Scarlata   +5 more
semanticscholar   +1 more source

The bolometric quasar luminosity function at z = 0–7 [PDF]

Monthly notices of the Royal Astronomical Society, 2020
In this paper, we provide updated constraints on the bolometric quasar luminosity function (QLF) from z = 0 to z = 7. The constraints are based on an observational compilation that includes observations in the rest-frame IR, B band, UV, soft, and hard ...
Xuejian Shen, P. Hopkins, C. Faucher-Giguére, D. Alexander, G. Richards, N. Ross, R. Hickox   +6 more
semanticscholar   +1 more source

On the FRB luminosity function – – II. Event rate density [PDF]

Monthly notices of the Royal Astronomical Society, 2020
The luminosity function of Fast Radio Bursts (FRBs), defined as the event rate per unit cosmic co-moving volume per unit luminosity, may help to reveal the possible origins of FRBs and design the optimal searching strategy. With the Bayesian modelling,
R. Luo, R. Luo, Y. Men, Kejia Lee, Kejia Lee, Weiyang Wang, D. Lorimer, Bing Zhang   +7 more
semanticscholar   +1 more source