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A precise measurement of the magnetic field in the corona of the black hole binary V404 Cygni

by Rodríguez, César Cabrera , Bachetti, Matteo , Gaggstatter, Tim , Gandhi, Poshak , Losada, José A. Rodríguez , Scarpa, Riccardo , Lavers, Antonio Cabrera , Garner, Alan , Acosta, Sergio Fernandez , Raines, S. Nicholas , Murphey, Charles H. , Cáceres, J. Israel Fernández , Fender, Rob , de Paz Martín, Héctor , Packham, Chris , Eikenberry, Stephen S. , Chinn, Brian , Gottlieb, Amy , Burse, Mahesh , Lopez, Manuel Huertas , Molgó, Jordi , Hardy, Liam , Marsh, Tom R. , Tejero, Álvaro , González, Carlos E. Martín , Edwards, Michelle L. , Herlevich, Michael D. , Charcos, Miguel , Miller, Paola , Gerarts, Andreas , Castro-Tirado, A. J. , Donoso, H. Veronica , Dominguez, Raul , Warner, Craig , Julian, Jeff , Pessev, Peter , Rodriguez, J. Esteban , Geier, Stefan , Bennett, John G. , Cenarro, A. Javier , Nuñez, Agustín , Chordia, Pravin , Calero, María Martín , Sarajedini, Ata , Ackley, Kendall , Dallilar, Yigit , Vega, Claudia , Hanna, Kevin , Marin-Franch, Antonio , Walton, Dominic J. , Littlefair, Stuart P. , Frommeyer, Raymond , Casella, Piergiorgio , Mooley, Kunal , Mullin, Scott , García, Luis A. Rodríguez , Punnadi, Sujit , Lasso-Cabrera, Nestor M. , Ramaprakas

in Accretion disks / Binary stars / Black holes / Constraint modelling / Decay rate / Emission / Energetic particles / Flux (rate) / Infrared telescopes / Magnetic fields / Magnetic measurement / Neutron stars / Plasmas (physics) / Red giant stars / Solar corona / Space telescopes / Synchrotron radiation / X ray sources / X ray telescopes / X-rays

2017

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A precise measurement of the magnetic field in the corona of the black hole binary V404 Cygni

2017

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2017

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Journal Article

A precise measurement of the magnetic field in the corona of the black hole binary V404 Cygni

Rodríguez, César Cabrera,

Bachetti, Matteo,

Gaggstatter, Tim,

Gandhi, Poshak,

Losada, José A. Rodríguez,

Scarpa, Riccardo,

Lavers, Antonio Cabrera,

Garner, Alan,

Acosta, Sergio Fernandez,

Raines, S. Nicholas,

Murphey, Charles H.,

Cáceres, J. Israel Fernández,

Fender, Rob,

de Paz Martín, Héctor,

Packham, Chris,

Eikenberry, Stephen S.,

Chinn, Brian,

Gottlieb, Amy,

Burse, Mahesh,

Lopez, Manuel Huertas,

Molgó, Jordi,

Hardy, Liam,

Marsh, Tom R.,

Tejero, Álvaro,

González, Carlos E. Martín,

Edwards, Michelle L.,

Herlevich, Michael D.,

Charcos, Miguel,

Miller, Paola,

Gerarts, Andreas,

Castro-Tirado, A. J.,

Donoso, H. Veronica,

Dominguez, Raul,

Warner, Craig,

Julian, Jeff,

Pessev, Peter,

Rodriguez, J. Esteban,

Geier, Stefan,

Bennett, John G.,

Cenarro, A. Javier,

Nuñez, Agustín,

Chordia, Pravin,

Calero, María Martín,

Sarajedini, Ata,

Ackley, Kendall,

Dallilar, Yigit,

Vega, Claudia,

Hanna, Kevin,

Marin-Franch, Antonio,

Walton, Dominic J.,

Littlefair, Stuart P.,

Frommeyer, Raymond,

Casella, Piergiorgio,

Mooley, Kunal,

Mullin, Scott,

García, Luis A. Rodríguez,

Punnadi, Sujit,

Lasso-Cabrera, Nestor M.,

Ramaprakas

2017

Overview

Observations of binary stars containing an accreting black hole or neutron star often show x-ray emission extending to high energies (>10 kilo–electron volts), which is ascribed to an accretion disk corona of energetic particles akin to those seen in the solar corona. Despite their ubiquity, the physical conditions in accretion disk coronae remain poorly constrained. Using simultaneous infrared, optical, x-ray, and radio observations of the Galactic black hole system V404 Cygni, showing a rapid synchrotron cooling event in its 2015 outburst, we present a precise 461 ± 12 gauss magnetic field measurement in the corona. This measurement is substantially lower than previous estimates for such systems, providing constraints on physical models of accretion physics in black hole and neutron star binary systems.

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Publisher

American Association for the Advancement of Science,The American Association for the Advancement of Science

Subject

Accretion disks

/ Binary stars

/ Black holes

/ Constraint modelling

/ Decay rate

/ Emission

/ Energetic particles