Gamma rays from Fast Black-Hole Winds

Ajello M, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bellazzini R, Berretta A, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Bruel P, Buson S, Cameron RA, Caprioli D, Caputo R, Cavazzuti E, Chartas G, Chen S, Cheung CC, Chiaro G, Costantin D, Cutini S, D'Ammando F, de la Torre Luque P, de Palma F, Desai A, Diesing R, Di Lalla N, Dirirsa F, Di Venere L, Domínguez A, Fegan SJ, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Green D, Grenier IA, Guiriec S, Hartmann D, Horan D, Jóhannesson G, Karwin C, Kerr M, Kovačević M, Kuss M, Larsson S, Latronico L, Lemoine-Goumard M, Li J, Liodakis I, Longo F, Loparco F, Lovellette MN, Lubrano P, Maldera S, Manfreda A, Marchesi S, Marcotulli L, Martí-Devesa G, Mazziotta MN, Mereu I, Michelson PF, Mizuno T, Monzani ME, Morselli A, Moskalenko IV, Negro M, Omodei N, Orienti M, Orlando E, Paliya V, Paneque D, Pei Z, Persic M, Pesce-Rollins M, Porter TA, Principe G, Racusin JL, Rainò S, Rando R, Rani B, Razzano M, Reimer A, Reimer O, Saz Parkinson PM, Serini D, Sgrò C, Siskind EJ, Spandre G, Spinelli P, Suson DJ, Tak D, Torres DF, Troja E, Wood K, Zaharijas G, Zrake J (2022)

Publication Type: Conference contribution

Publication year: 2022

Journal

Publisher: Sissa Medialab Srl

Book Volume: 395

Conference Proceedings Title: Proceedings of Science

Event location: Virtual, Berlin

Abstract

Massive black holes at the centers of galaxies can launch powerful wide-angle winds that, if sustained over time, can unbind the gas from the stellar bulges of galaxies. These winds may be responsible for the observed scaling relation between the masses of the central black holes and the velocity dispersion of stars in galactic bulges. Propagating through the galaxy, the wind should interact with the interstellar medium creating a strong shock, similar to those observed in supernovae explosions, which is able to accelerate charged particles to high energies. In this work we use data from the Fermi Large Area Telescope to search for the γ-ray emission from galaxies with an ultra-fast outflow (UFO): a fast (v ∼ 0.1c), highly ionized outflow, detected in absorption at hard X-rays in several nearby active galactic nuclei (AGN). Adopting a sensitive stacking analysis we are able to detect the average γ-ray emission from these galaxies and exclude that it is due to processes other than the UFOs. Moreover, our analysis shows that the γ-ray luminosity scales with the AGN bolometric luminosity and that these outflows transfer ∼0.04 % of their mechanical power to γ rays. Interpreting the observed γ-ray emission as produced by cosmic rays (CRs) accelerated at the shock front, we find that the γ-ray emission may attest to the onset of the wind-host interaction and that these outflows can energize charged particles up to the transition region between galactic and extragalactic CRs. A preprint of the full analysis is available on the arXiv: 2105.11469.

Authors with CRIS profile

Involved external institutions

Università degli Studi di Trieste Italy (IT) Clemson University United States (USA) (US) U.S. Naval Research Laboratory United States (USA) (US) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) University of Pisa / Università di Pisa (UniPi) Italy (IT) National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) Italy (IT) Leopold-Franzens-Universität Innsbruck / University of Innsbruck Austria (AT) Università degli Studi di Perugia Italy (IT) Stanford University United States (USA) (US) Max-Planck-Institut für Physik (Werner-Heisenberg-Institut, MPP) / Max Planck Institute for Physics Germany (DE) Université Paris-Saclay France (FR) Laboratoire Leprince-Ringuet (LLR) France (FR) Julius-Maximilians-Universität Würzburg Germany (DE) University of Chicago United States (USA) (US) National Aeronautics and Space Administration (NASA) United States (USA) (US) Italian Space Agency / Agenzia Spaziale Italiana (ASI) Italy (IT) College of Charleston (CofC) United States (USA) (US) University of Padua / Universita degli Studi di Padova Italy (IT) Politecnico di Bari Italy (IT) Università del Salento Italy (IT) University of Wisconsin - Madison United States (USA) (US) Laboratoire d'Annecy-le-Vieux de Physique des Particules LAPP France (FR) Universidad Complutense de Madrid (UCM) Spain (ES) Ruhr-Universität Bochum (RUB) Germany (DE) Hiroshima University / 広島大学 Japan (JP) University of Iceland (UI) / Háskóli Íslands Iceland (IS) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) Sweden (SE) Institut national de physique nucléaire et de physique des particules (IN2P3) France (FR) University of Science and Technology of China (USTC) China (CN) Turku University Hospital / Turun yliopistollinen keskussairaala (TYKS) Finland (FI) Aryabhatta Research Institute of Observational Sciences (ARIES) India (IN) Santa Cruz Institute for Particle Physics United States (USA) (US) NYCB Real-Time Computing, Inc. United States (USA) (US) Purdue University Northwest / Purdue University Calumet United States (USA) (US) Institute of Space Sciences (IEEC-CSIC) Spain (ES) Praxis, Inc. United States (USA) (US)

How to cite

APA:

Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R.,... Zrake, J. (2022). Gamma rays from Fast Black-Hole Winds. In Proceedings of Science. Virtual, Berlin, DE: Sissa Medialab Srl.

MLA:

Ajello, Marco, et al. "Gamma rays from Fast Black-Hole Winds." Proceedings of the 37th International Cosmic Ray Conference, ICRC 2021, Virtual, Berlin Sissa Medialab Srl, 2022.

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