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Three-dimensional simulations of relativistic jets are a useful tool to understand the evolution of jets and radio galaxies in detail. However, computationally demanding as they are, their use is limited to a relatively small number of…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-14 Pau Beltrán-Palau , Manel Perucho , José María Martí

One of the main debated astrophysical problems is the role of the AGN feedback in galaxy formation. It is known that massive black holes have a profound effect on the formation and evolution of galaxies, but how black holes and galaxies…

High Energy Astrophysical Phenomena · Physics 2015-06-03 E. Torresi , P. Grandi , E. Costantini , G. G. C. Palumbo

A key for understanding the evolution of galaxies and in particular their star formation history will be future ultra-deep radio surveys. While star formation rates (SFRs) are regularly estimated with phenomenological formulas based on the…

Astrophysics of Galaxies · Physics 2017-04-12 Jennifer Schober , Dominik R. G. Schleicher , Ralf S. Klessen

Analysis of the frequency and physical properties of galaxies with star-formation and AGN activity in different environments in the local universe is a cornerstone for understanding structure formation and galaxy evolution. We have built a…

Astrophysics · Physics 2008-11-26 Pietro Reviglio , David J. Helfand

Galaxy clusters undergo mergers that can generate extended radio sources called radio relics. Radio relics are the consequence of merger-induced shocks that propagate in the intra cluster medium (ICM). In this paper we analyse the radio,…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-21 F. de Gasperin , H. T. Intema , J. Ridl , M. Salvato , R. van Weeren , A. Bonafede , J. Greiner , R. Cassano , M. Bruggen

Partially obscured AGNs within a redshift range $z=0.011\sim0.256$ are used to re-study the role of feedback in the AGN-host coevolution issue in terms of their [OIII]$\lambda$5007 emission line profile. The spectra of these objects enable…

Astrophysics of Galaxies · Physics 2015-06-23 J. Wang

Based on a sample of over 1,800 radio AGN at redshifts out to z~5, which have typical stellar masses within ~3x(10^{10}-10^{11}) Msol, and 3 GHz radio data in the COSMOS field, we derived the 1.4 GHz radio luminosity functions for radio AGN…

Astrophysics of Galaxies · Physics 2017-06-14 V. Smolcic , M. Novak , I. Delvecchio , L. Ceraj , M. Bondi , J. Delhaize , S. Marchesi , E. Murphy , E. Schinnerer , E. Vardoulaki , G. Zamorani

Supermassive black holes are commonly found in the center of galaxies and evolve with their hosts. The supermassive binary black holes (SMBBH) are thus expected to exist in close galaxy pairs, however, none has been unequivocally detected.…

Instrumentation and Methods for Astrophysics · Physics 2020-07-15 Yi Feng , Di Li , Zheng Zheng , Chao-Wei Tsai

We present our very recent results on the sub-mJy radio source populations at 1.4 GHz based on the Extended Chandra Deep Field South VLA survey, which reaches ~ 30 {\mu}Jy, with details on their number counts, evolution, and luminosity…

Astrophysics of Galaxies · Physics 2015-06-18 P. Padovani , M. Bonzini , N. Miller , K. I. Kellermann , V. Mainieri , P. Rosati , P. Tozzi , S. Vattakunnel

The effects of feedback from high luminosity radio-loud AGN have been extensively discussed in the literature, but feedback from low-luminosity radio-loud AGN is less well understood. The advent of high sensitivity, high angular resolution,…

Radio observations provide a powerful tool to constrain the assembly of galaxies over cosmic time. Recent deep and wide radio continuum surveys have improved significantly our understanding on radio emission properties of AGNs and SFGs…

Astrophysics of Galaxies · Physics 2025-02-19 Fangyou Gao , Tao Wang , Yijun Wang

The superb sensitivity and angular resolution of the next-generation radio telescopes with combined frequency coverage of approximately over three orders of magnitude (100 MHz--100 GHz) will sample the radio and far-infrared (FIR) spectral…

Occupying the intermediate-mass regime of the accretion--jet parameter space, radio continuum emission from active galactic nuclei with black hole mass M_BH <~ 10^6 Msun (low-mass AGNs) is a valuable probe to the physics of relativistic…

Astrophysics of Galaxies · Physics 2024-01-30 Jin-Zhi Wu , Xiao-Bo Dong , Lei Qian , Wen-Juan Liu , Fu-Guo Xie , Bo Peng

We present an ongoing study of 18 nearby galaxy groups, chosen for the availability of Chandra and/or XMM-Newton data and evidence for AGN/hot intragroup gas interaction. We have obtained 235 and 610 MHz observations at the GMRT for all the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 S. Giacintucci , J. M. Vrtilek , E. O'Sullivan , S. Raychaudhury , L. P. David , T. Venturi , R. Athreya , M. Gitti

The population of black holes observed via gravitational waves currently covers the local universe up to a redshift $z\lesssim 1$, for the most massive merging binaries, or $z\lesssim 0.25$ for low-mass BH binaries (BBH). Evolution of the…

General Relativity and Quantum Cosmology · Physics 2025-10-16 Jam Sadiq , Thomas Dent , Ana Lorenzo-Medina

The effect of Active Galactic Nuclei (AGN) on their host galaxies -- in particular their levels of star formation -- remains one of the key outstanding questions of galaxy evolution. Successful cosmological models of galaxy evolution…

(Abridged) In this article, we discuss the state of ``AGN feedback'' in radio-quiet (RQ) AGN. This study involves heterogeneous samples of nearby Seyfert and LINER galaxies as well as QSOs that have been observed at low radio frequencies…

Astrophysics of Galaxies · Physics 2023-02-15 Preeti Kharb , Silpa Sasikumar

The fast growth of supermassive black holes and their feedback to the host galaxies play an important role in regulating the evolution of galaxies, especially in the early Universe. However, due to cosmological dimming and the limited…

Minkowski's Object and 'Death Star galaxy' are two of the famous cases of rare instances when a radio jet has been observed to directly hit a neighbouring galaxy. RAD12, the RAD@home citizen science discovery with GMRT being presented here,…

Astrophysics of Galaxies · Physics 2023-03-14 Ananda Hota , Pratik Dabhade , Sravani Vaddi

Massive galaxies at high-z are known to co-evolve with their circumgalactic medium (CGM). If we want to truly understand the role of the CGM in the early evolution of galaxies and galaxy-clusters, we need to fully explore the multi-phase…

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