Gamma Rays from Fast Black-hole Winds

Gamma Rays from Fast Black-hole Winds
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DOI：
10.3847/1538-4357/ac1bb2
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发表时间：
2021-07
期刊：
The Astrophysical Journal
影响因子：
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通讯作者：
M. Ajello;L. Baldini;J. Ballet;G. Barbiellini;D. Bastieri;R. Bellazzini;A. Berretta;E. Bissaldi;R. Blandford;E. Bloom;R. Bonino;P. Bruel;S. Buson;R. Cameron;D. Caprioli;R. Caputo;E. Cavazzuti;G. Chartas;S. Chen;C. C. Cheung-C.;G. Chiaro;D. Costantin;S. Cutini;F. D’Ammando;P. De la Torre Luque;F. de Palma;A. Desai;R. Diesing;N. Di Lalla;F. Dirirsa;L. Di Venere;A. Domínguez;S. Fegan;A. Franckowiak;Y. Fukazawa;S. Funk;P. Fusco;F. Gargano;D. Gasparrini;N. Giglietto;F. Giordano;M. Giroletti;D. Green;I. Grenier;S. Guiriec;D. Hartmann;D. Horan;G. Jóhannesson;C. Karwin;M. Kerr;M. Kovačević;M. Kuss;S. Larsson;L. Latronico;M. Lemoine-Goumard;J. Li;I. Liodakis;F. Longo;F. Loparco;M. Lovellette;P. Lubrano;S. Maldera;A. Manfreda;S. Marchesi;L. Marcotulli;G. Martí-Devesa;M. Mazziotta;I. Mereu;P. Michelson;T. Mizuno;M. Monzani;A. Morselli;I. Moskalenko;M. Negro;N. Omodei;M. Orienti;E. Orlando;V. Paliya;D. Paneque;Z. Pei;M. Persic;M. Pesce-Rollins;T. Porter;G. Principe;J. Racusin;S. Rainò;R. Rando;Babita Rani;M. Razzano;A. Reimer;O. Reimer;P. S. Saz Parkinson;D. Serini;C. Sgro’;E. Siskind;G. Spandre;P. Spinelli;D. Suson;D. Tak;D. Torres;E. Troja;K. Wood;G. Zaharijas;J. Zrake
M. Ajello;L. Baldini;J. Ballet;G. Barbiellini;D. Bastieri;R. Bellazzini;A. Berretta;E. Bissaldi;R. Blandford;E. Bloom;R. Bonino;P. Bruel;S. Buson;R. Cameron;D. Caprioli;R. Caputo;E. Cavazzuti;G. Chartas;S. Chen;C. C. Cheung-C.;G. Chiaro;D. Costantin;S. Cutini;F. D’Ammando;P. De la Torre Luque;F. de Palma;A. Desai;R. Diesing;N. Di Lalla;F. Dirirsa;L. Di Venere;A. Domínguez;S. Fegan;A. Franckowiak;Y. Fukazawa;S. Funk;P. Fusco;F. Gargano;D. Gasparrini;N. Giglietto;F. Giordano;M. Giroletti;D. Green;I. Grenier;S. Guiriec;D. Hartmann;D. Horan;G. Jóhannesson;C. Karwin;M. Kerr;M. Kovačević;M. Kuss;S. Larsson;L. Latronico;M. Lemoine-Goumard;J. Li;I. Liodakis;F. Longo;F. Loparco;M. Lovellette;P. Lubrano;S. Maldera;A. Manfreda;S. Marchesi;L. Marcotulli;G. Martí-Devesa;M. Mazziotta;I. Mereu;P. Michelson;T. Mizuno;M. Monzani;A. Morselli;I. Moskalenko;M. Negro;N. Omodei;M. Orienti;E. Orlando;V. Paliya;D. Paneque;Z. Pei;M. Persic;M. Pesce-Rollins;T. Porter;G. Principe;J. Racusin;S. Rainò;R. Rando;Babita Rani;M. Razzano;A. Reimer;O. Reimer;P. S. Saz Parkinson;D. Serini;C. Sgro’;E. Siskind;G. Spandre;P. Spinelli;D. Suson;D. Tak;D. Torres;E. Troja;K. Wood;G. Zaharijas;J. Zrake
中科院分区：
其他
文献类型：
--
作者：
M. Ajello;L. Baldini;J. Ballet;G. Barbiellini;D. Bastieri;R. Bellazzini;A. Berretta;E. Bissaldi;R. Blandford;E. Bloom;R. Bonino;P. Bruel;S. Buson;R. Cameron;D. Caprioli;R. Caputo;E. Cavazzuti;G. Chartas;S. Chen;C. C. Cheung-C.;G. Chiaro;D. Costantin;S. Cutini;F. D’Ammando;P. De la Torre Luque;F. de Palma;A. Desai;R. Diesing;N. Di Lalla;F. Dirirsa;L. Di Venere;A. Domínguez;S. Fegan;A. Franckowiak;Y. Fukazawa;S. Funk;P. Fusco;F. Gargano;D. Gasparrini;N. Giglietto;F. Giordano;M. Giroletti;D. Green;I. Grenier;S. Guiriec;D. Hartmann;D. Horan;G. Jóhannesson;C. Karwin;M. Kerr;M. Kovačević;M. Kuss;S. Larsson;L. Latronico;M. Lemoine-Goumard;J. Li;I. Liodakis;F. Longo;F. Loparco;M. Lovellette;P. Lubrano;S. Maldera;A. Manfreda;S. Marchesi;L. Marcotulli;G. Martí-Devesa;M. Mazziotta;I. Mereu;P. Michelson;T. Mizuno;M. Monzani;A. Morselli;I. Moskalenko;M. Negro;N. Omodei;M. Orienti;E. Orlando;V. Paliya;D. Paneque;Z. Pei;M. Persic;M. Pesce-Rollins;T. Porter;G. Principe;J. Racusin;S. Rainò;R. Rando;Babita Rani;M. Razzano;A. Reimer;O. Reimer;P. S. Saz Parkinson;D. Serini;C. Sgro’;E. Siskind;G. Spandre;P. Spinelli;D. Suson;D. Tak;D. Torres;E. Troja;K. Wood;G. Zaharijas;J. Zrake

文献摘要

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星系中心的大质量黑洞可以发射强大的广角风，如果持续一段时间，可以将气体从星系的恒星核球中释放出来。这些风可能是观察到的中心黑洞质量与星系核球中恒星速度色散之间的比例关系的原因。在星系中传播时，风应该与星际介质相互作用，产生强烈的冲击，类似于超新星爆炸中观察到的冲击，它能够将带电粒子加速到高能量。在这项工作中，我们使用来自费米大面积望远镜的数据来搜索具有超快外流（UFO）的星系的γ射线发射：一种快速（v∼0.1c）、高度电离的外流，在几个附近的活动星系核（AGN）的硬X射线吸收中检测到。采用灵敏的叠加分析，我们能够检测到这些星系的平均 γ 射线发射，并排除它是由不明飞行物以外的过程造成的。此外，我们的分析表明，γ 射线光度与 AGN 测辐射热光度成比例，并且这些流出物将其机械能的 ∼0.04% 转移到 γ 射线。解释观测到的由激波前沿加速的宇宙射线（CR）产生的γ射线发射，我们发现γ射线发射可能证明风与宿主相互作用的开始，并且这些流出可以激发带电粒子直至银河系和河外CRs之间的过渡区域。
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 ultrafast outflow (UFO): a fast (v ∼ 0.1 c), 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 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.