English
Related papers

Related papers: The obstructed jet in Mrk 231

200 papers

We report on the direct observation of an extended X-ray jet in the $z$=6.1 radio-loud Active Galactic Nucleus PSO J030947.49+271757.31 from a deep Chandra X-ray observation (128 ksec). This detection represents the most distant kpc…

High Energy Astrophysical Phenomena · Physics 2022-03-14 L. Ighina , A. Moretti , F. Tavecchio , A. Caccianiga , S. Belladitta , D. Dallacasa , R. Della Ceca , T. Sbarrato , C. Spingola

We present a study of molecular gas, traced via CO (3-2) from ALMA data, of four z< 0.2, `radio quiet', type 2 quasars (log [L(bol)/(erg/s)] = 45.3 - 46.2; log [L(1.4 GHz)/(W/Hz)] = 23.7 - 24.3). Targets were selected to have extended radio…

We present high-quality VLA images of the FR I radio galaxy 3C 31 in the frequency range 1365 to 8440 MHz with angular resolutions from 0.25 to 40 arcsec. Our new images reveal complex, well resolved filamentary substructure in the radio…

Astrophysics · Physics 2009-11-13 R. A. Laing , A. H. Bridle , P. Parma , L. Feretti , G. Giovannini , M. Murgia , R. A. Perley

(See the complete and formatted abstract in the paper). We report on VLBI monitoring of the low-luminosity AGN (LLAGN) in M81 at 1.7, 2.3, 5, and 8.4GHz. These observations are phase-referenced to the supernova SN1993J (located in the same…

High Energy Astrophysical Phenomena · Physics 2015-05-28 I. Marti-Vidal , J. M. Marcaide , A. Alberdi , M. A. Perez-Torres , E. Ros , J. C. Guirado

Quasar feedback in the form of powerful outflows is invoked as a key mechanism to quench star formation in galaxies, although direct observational evidence is still scarce and debated. Here we present Early Release Science JWST NIRSpec IFU…

F00183-7111 is one of the most extreme Ultra-Luminous Infrared Galaxies known. Here we present a VLBI image which shows that F00183-7111 is powered by a combination of a radio-loud Active Galactic Nucleus surrounded by vigorous starburst…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Ray P. Norris , Emil Lenc , Alan L. Roy , Henrik Spoon

We present an investigation into the nature of the jet-gas interactions in a sample of 10 radio galaxies at 2.3<z<2.9 using deep spectroscopy of the UV line and continuum emission obtained at Keck II and the Very Large Telescope.…

Astrophysics · Physics 2009-11-11 A. Humphrey , M. Villar-Martin , R. Fosbury , J. Vernet , S. di Serego Alighieri

The $z$~0.1 type-2 QSO J1430+1339 (the 'Teacup') is a complex galaxy showing a loop of ionised gas ~10 kpc in diameter, co-spatial radio bubbles, a compact (~1 kpc) jet, and outflow activity. We used VLT/MUSE optical integral field…

There is now unequivocal evidence that the jets in FR I radio galaxies are initially relativistic, decelerating flows. On the assumption that they are axisymmetric and intrinsically symmetrical (a good approximation close to the nucleus),…

Astrophysics · Physics 2008-01-03 R. A. Laing , A. H. Bridle

We have made a 30 ksec Chandra observation of the redshift z=0.63 GPS quasar B2 0738+313. We detected X-ray emission from the core and have discovered a 200 kpc (projected on the sky) X-ray jet. The X-ray jet is narrow and curves, following…

We report detailed studies of the X-ray emission from the kpc scale jet in the nearest active galaxy, Cen A. 41 compact sources were found within the jet, 13 of which were newly identified. We construct the luminosity function for the…

Relativistic jets of radio loud active galactic nuclei (AGN) produce highly directed, intense beams of radiation. A fraction of this beamed radiation scatters on the thermal plasma generally surrounding an AGN. The morphology of the…

Astrophysics · Physics 2009-11-10 Conrad Cramphorn , Sergey Sazonov , Rashid Sunyaev

We report on new multi-frequency Very Large Array (VLA) radio observations and Chandra X-ray observations of a radio-loud quasar with a ~300 kpc long jet, PKS 1127-145, during a flaring event detected in $\gamma$-rays by the Fermi Large…

High Energy Astrophysical Phenomena · Physics 2024-07-24 M. Orienti , A. Siemiginowska , F. D'Ammando , G. Migliori

We present JWST/MIRI MRS spectroscopy of NGC7319, the largest galaxy in the Stephan's Quintet, observed as part of the Early Release Observations (ERO). NGC7319 hosts a type 2 active galactic nucleus (AGN) and a low-power radio jet…

We present a ~100 ksec Chandra X-ray observation and new VLA radio data of the large scale, 300 kpc long X-ray jet in PKS1127-145, a radio loud quasar at redshift z=1.18. With this deep X-ray observation we now clearly discern the complex…

We report finding kiloparsec-scale radio emissions aligned with parsec-scale jet structures in the narrow-line Seyfert 1 (NLS1) galaxy Mrk 1239 using the Very Large Array and the Very Long Baseline Array. Thus, this radio-quiet NLS1 has a…

Astrophysics of Galaxies · Physics 2015-06-23 Akihiro Doi , Kiyoaki Wajima , Yoshiaki Hagiwara , Makoto Inoue

We present high angular resolution ALMA CO(2-1) and 1.7 mm continuum observations of the far-infrared-bright galaxy PKS0023-26, which hosts a young radio source and a luminous optical AGN. Although young, the powerful radio source has grown…

Astrophysics of Galaxies · Physics 2021-12-08 Raffaella Morganti , Tom Oosterloo , Clive Tadhunter , Emmanuel P. Bernhard , J. B. Raymond Oonk

Highly accreting quasars are quite luminous in the X-ray and optical regimes. While, they tend to become radio quiet and have optically thin radio spectra. Among the known quasars, IRAS F11119+3257 is a supercritical accretion source…

High Energy Astrophysical Phenomena · Physics 2020-04-08 Jun Yang , Zsolt Paragi , Tao An , Willem A. Baan , Prashanth Mohan , Xiang Liu

Broad Balmer emission lines in active galactic nuclei (AGN) may display dramatic changes in amplitude, even disappearance and re-appearance in some sources. As a nearby galaxy at a redshift of z = 0.0264, Mrk 590 suffered such a cycle of…

High Energy Astrophysical Phenomena · Physics 2021-01-20 J. Yang , I. van Bemmel , Z. Paragi , S. Komossa , F. Yuan , X. Yang , T. An , J. Y. Koay , C. Reynolds , J. B. R. Oonk , X. Liu , Q. Wu

We present 5-GHz MERLIN radio images of the microquasar GRS 1915+105 during two separate outbursts in 2001 March and 2001 July, following the evolution of the jet components as they move outwards from the core of the system. Proper motions…

‹ Prev 1 3 4 5 6 7 10 Next ›