Results 131 to 140 of about 796,792 (175)

Blackbody Quasar and Radio Source (BBQSORS): A Candidate of Transitional Little Red Dots with a T ∼ 104 K Blackbody Spectrum

The Astrophysical Journal Letters
JWST surveys have identified a new class of active galactic nuclei (AGNs) called little red dots (LRDs). Their observational properties challenge the canonical AGN paradigm and provide key insights into the early growth phase of the supermassive black ...
Yuxing Zhong, Xiaoyang Chen, Kohei Ichikawa, Youwen Kong, Kentaro Aoki, Satoshi Yamada, Tohru Nagao, Daisaburo Kido, Toshihiro Kawaguchi, Yoshiki Matsuoka, Toru Misawa, Shoichiro Mizukoshi, Masafusa Onoue, Ayumi Takahashi, Yoshiki Toba   +14 more
doaj   +1 more source

A VLBA-resolved Jet Associated with Super-Eddington Accretion in a Radio-loud Quasar at z = 3.4

The Astrophysical Journal Letters
We report the detailed jet properties of eROSITA Final Equatorial Depth Survey J084222.9+001000 (hereafter ID830), a radio-loud super-Eddington quasar at z = 3.4351, revealed by Very Long Baseline Array (VLBA) observations at 1.6, 4.9, and 8.2 GHz ...
Sakiko Obuchi, Ingyin Zaw, Kazuhiro Hada, Kohei Ichikawa, Joseph D. Gelfand   +4 more
doaj   +1 more source

The distribution and lifetime of powerful radio galaxies as a function of environment and redshift. [PDF]

Sci Rep, 2018
Garofalo D, Singh CB, Zack A.
europepmc   +1 more source

VLASS-based Survey of Transition State Galaxies and Their Relationship to Compact Peaked-spectrum Radio Sources

The Astrophysical Journal Supplement Series
We present multifrequency and high-resolution studies of a sample of 24 radio transient sources discovered by comparing the NRAO VLA Sky Survey and the Very Large Array Sky Survey.
Magdalena Kunert-Bajraszewska, Aleksandra Krauze, Amy E. Kimball, Łukasz Stawarz, Preeti Kharb, Daniel Stern, Kunal Mooley, Kristina Nyland, Dorota Kozieł-Wierzbowska   +8 more
doaj   +1 more source

Alternating ejection in radio-loud quasars?

The Astronomical Journal, 1984
L. M. Ensman, J. S. Ulvestad
openaire   +1 more source

Compact radio-loud Broad Absorption Line Quasars

, 2020
. For a long time, radio-loud Broad Absorption Line Quasars (BAL QSOs) were thought to be extremely rare objects. The absorbing troughs seen in their optical spectra are due to strong winds which probably have their origin within the inner region of the ...
R Carballo, K.-H Mack, M Vigotti, J I González-Serrano, F M Montenegro-Montes, C R Benn, F Jiménez-Luján, J Holt   +7 more
core  

Chandra enables study of x-ray jets. [PDF]

Proc Natl Acad Sci U S A, 2010
Schwartz D.
europepmc   +1 more source

Fast radio bursts and the radio perspective on multi-messenger gravitational lensing. [PDF]

Philos Trans A Math Phys Eng Sci
Pastor-Marazuela I.
europepmc   +1 more source

Active galactic nuclei. [PDF]

Proc Natl Acad Sci U S A, 1999
Fabian AC.
europepmc   +1 more source

A decade of sub-arcsecond imaging with the International LOFAR Telescope. [PDF]

Astrophys Space Sci
Morabito LK, Jackson N, de Jong J, Escott E, Groeneveld C, Mahatma V, Petley J, Sweijen F, Timmerman R, van Weeren RJ.   +9 more
europepmc   +1 more source