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Related papers: Resolving the jet in Cygnus A

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We report spectral analysis on a 170 ks XRISM \textit{Resolve} exposure of the core of Cygnus A. Analyzing the full field of view spectrum in the $1.7-12.0$ keV band, we find evidence for two-temperature cluster gas. The hotter ($kT = 5.53…

High Energy Astrophysical Phenomena · Physics 2025-12-12 Anwesh Majumder , T. Heckman , J. Meunier , A. Simionescu , B. R. McNamara , L. Gu , A. Ptak , E. Hodges-Kluck , M. Yukita , M. W. Wise , N. Roy

Measurements are presented of the properties of high transverse momentum jets, produced in proton-proton collisions at a center-of-mass energy of sqrt(s) = 7 TeV. The data correspond to an integrated luminosity of 35 pb^-1 and were…

High Energy Physics - Experiment · Physics 2013-06-25 ATLAS Collaboration

This paper presents observations of Cygnus A at 74 and 327 MHz at angular resolutions of approximately 10" and 3", respectively. These observations are among the highest angular resolutions obtained below 1000 MHz for this object. While the…

We study the particle energy distribution in the cocoon surrounding Cygnus A, using radio images between 151 MHz and 15 GHz and a 200 ks Chandra ACIS-I image. We show that the excess low frequency emission in the the lobe further from Earth…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 K. C. Steenbrugge , I. Heywood , K. M. Blundell

We present subarcsecond resolution mid-infrared images at 10.8 and 18.2 microns of Cygnus A. These images were obtained with the University of Florida mid-IR camera/spectrometer OSCIR at the Keck II 10-m telescope. Our data show extended…

The broadband afterglow of GW170817/GRB 170817A is believed to be from an off-axis structured jet. The central engine of a gamma-ray burst usually launches a pair of outflows that move oppositely, it is reasonable to consider the emission…

High Energy Astrophysical Phenomena · Physics 2019-07-31 Long-Biao Li , Jin-Jun Geng , Yong-Feng Huang , Bing Li

Global millimetre VLBI allows detailed studies of the most central jet regions of AGN with unprecedent spatial resolution of a few 100-1000 Schwartzschild radii to be made. Study of these regions will help to answer the question how the…

Up to now, jet kinematic studies of radio quasars have barely reached beyond the redshift range at $z>3.5$. This significantly limits our knowledge of high-redshift jets, which can provide key information for understanding the jet nature…

High Energy Astrophysical Phenomena · Physics 2023-03-20 Yingkang Zhang , Tao An , Sandor Frey , Krisztina Eva Gabanyi , Yulia Sotnikova

In this paper we present results from our exploratory mid-IR study of Centaurus A circumnuclear environment using high-angular resolution imaging at the Magellan 6.5m telescope with the MIRAC/BLINC camera. We detected emission from a…

We identify an axis connecting two opposite `ears' in the supernova remnant W49B and morphological signatures of three arcs around this axis that we claim are sections of full circum-jet rings. Based on recent identifications of…

High Energy Astrophysical Phenomena · Physics 2025-06-05 Noam Soker , Dmitry Shishkin

We present very high spatial resolution deep radio continuum observations at 5 GHz (6 cm) made with e-MERLIN of the young stars DG Tau A and B. Assuming it is launched very close (~=1 au) from the star, our results suggest that the DG Tau A…

Solar and Stellar Astrophysics · Physics 2015-06-16 Rachael E. Ainsworth , Tom P. Ray , Anna M. M. Scaife , Jane S. Greaves , Rob J. Beswick

We report the results of interferometric observations of Centaurus A with the MID-infrared Interferometer (MIDI) at ESO's VLTI telescope array. The interferometric measurements are spectrally resolved (R = 30) in the wavelength range 8 to…

The measurement of the jet energy resolution is presented using data recorded with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV. The sample corresponds to an integrated luminosity of 35 pb-1. Jets are reconstructed from…

High Energy Physics - Experiment · Physics 2013-06-11 ATLAS Collaboration

We report the detection of a new feature at the centre of NGC 1275 in the Perseus cluster, hosting the radio source 3C 84. This feature emerges ~ 2 mas (~ 0.8 pc) north of the central core in recent 15 and 43 GHz VLBA images, and seems to…

High Energy Astrophysical Phenomena · Physics 2016-11-29 Yutaka Fujita , Hiroshi Nagai

We present results of analysis of a Chandra observation of Cygnus A in which the X-ray hotspots at the ends of the jets are mapped in detail. A hardness map reveals previously unknown structure in the form of outer and inner hard arcs…

Astrophysics · Physics 2009-11-10 M. Balucinska-Church , M. Ostrowski , L. Stawarz , M. J. Church

A recent article on high-resolution 86 GHz observations with the Global Millimeter VLBI Array, the phased Atacama Large Millimeter/submillimeter Array, and the Greenland Telescope describes the detection of a limb-brightened cylindrical…

Astrophysics of Galaxies · Physics 2023-11-01 Brian Punsly

In the current paradigm, it is believed that the compact VLBI radio core of radio-loud AGNs represents the innermost upstream regions of relativistic outflows. These regions of AGN jets have generally been modeled by a conical outflow with…

High Energy Astrophysical Phenomena · Physics 2017-01-11 Juan-Carlos Algaba , Masanori Nakamura , Keiichi Asada , Sang-Sung Lee

Radio imaging of the microquasar GRS 1915+105 with the Very Long Baseline Array (VLBA) during various flaring, quiescent, or oscillatory states of the black hole binary, always resolves the nucleus as a compact jet of length about…

Astrophysics · Physics 2009-10-31 V. Dhawan , I. F. Mirabel , L. F. Rodriguez

This paper investigates the symmetry and magnetic field properties of the jets in the radio galaxy NGC 1052, with particular attention to the impact of the ionized torus that surrounds the central region on the emitted radiation. Our study…

Deep Very Large Array imaging of the quasar 3C\,345 at 4.86 and 8.44 GHz has been used to study the structure and linear polarization of its radio jet on scales ranging from 2 to 30 kpc. There is a 7--8 Jy unresolved core with spectral…

High Energy Astrophysical Phenomena · Physics 2015-06-11 David H. Roberts , John F. C. Wardle , Valerie V. Marchenko