Results 21 to 30 of about 166 (155)
The host galaxies of luminous radio-quiet quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 16 pages, 8 figures, revised version to be published in ...
Percival, W +3 more
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Galaxy-wide radio-induced feedback in a radio-quiet quasar [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We report the discovery of a radio quiet type 2 quasar (SDSS J165315.06+234943.0 nicknamed the "Beetle" at z=0.103) with unambiguous evidence for active galactic nucleus (AGN) radio induced feedback acting across a total extension of ~46 kpc and up to ~26 kpc from the AGN.
M. Villar-Martín +9 more
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The Astrophysical Journal, 1999 We have performed a successful targeted search for a population of red, radio-quiet, and probably absorbed quasars. Radio-quiet, optically red ROSAT PSPC X-ray sources brighter than 1 × 10-13 ergs cm-2 s-1 were searched for red (O-E > 2.0, O ≤ 20) counterparts in the Automated Plate-measuring Machine catalog of Palomar Sky Survey objects. Of 45 objects
Dong‐Woo Kim, Martin Elvis
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The central engines of radio-quiet quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 Two rival hypotheses have been proposed for the origin of the compact radio flux observed in radio-quiet quasars (RQQs). It has been suggested that the radio emission in these objects, typically some two or three orders of magnitude less powerful than in radio-loud quasars (RLQs), represents either emission from a circumnuclear starburst or is produced
Blundell, K, Beasley, A
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Spectroscopic Properties Of Radio Loud And Radio Quiet Quasars [PDF]
Proceedings of the International Astronomical Union, 2019 Surveys have shown radio-loud (RL) quasars constitute $10 \%$-$15 \%$ of the total quasar population and rest are radio-quiet (RQ). However, it is unknown if this radio-loud fraction (RLF) (RL quasars/Total quasars) remains consistent among different parameter spaces.
Chakraborty, Avinanda +1 more
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Optical Microvariability in Radio Quiet Quasars [PDF]
Symposium - International Astronomical Union, 1994 We have observed 11 radio quiet QSOs (RQQSOs) to see if they exhibit intranight variability in the optical. The detection of such microvariability would support models in which fluctuations on accretion disks are dominant, while if it is never present, models based on relativistic jets would be favored.
Paul J. Wiita +2 more
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Magnetic Fields in Radio-Quiet Quasars [PDF]
Symposium - International Astronomical Union, 1990 As an hypothesis the sharp far–infrared turnovers in the spectra of several radio–quiet galactic nuclei [1–3] are attributed to the modifications of synchrotron emission arising from the presence of a thermal background plasma. We calculate the synchrotron emission from a power-law distribution of relativistic electrons N(γ) = Noγ–s in a large–scale ...
R. Schlickeiser, A. Crusius-Wătzel
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A NEW ORIENTATION INDICATOR FOR RADIO-QUIET QUASARS [PDF]
The Astrophysical Journal, 2011 The velocities of the [O III] 5007 and optical Fe II emission lines, measured relative to the systemic redshifts of 2265 QSOs by Hu et al. (2008), show the signature of a disklike BLR structure with polar outflows. Objects with large [O III] outflows show no Fe II offset velocity and are seen pole-on.
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Intranight optical variability of BL Lacs, radio-quiet quasars and radio-loud quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 8 pages, 3 Postscript figures, Accepted for publication in MNRAS, uses mn2e ...
Stalin, C. S. +4 more
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Star formation in quasar hosts and the origin of radio emission in radio-quiet quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Radio emission from radio-quiet quasars may be due to star formation in the quasar host galaxy, to a jet launched by the supermassive black hole, or to relativistic particles accelerated in a wide-angle radiatively-driven outflow. In this paper we examine whether radio emission from radio-quiet quasars is a byproduct of star formation in their hosts ...
Zakamska, Nadia L. +13 more
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