Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi

H.E.S.S. Collaboration

doi:10.1126/science.abn0567

Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi

H.E.S.S. Collaboration

Dublin Institute for Advanced Studies
Max-Planck-Institut für Kernphysik
Russian-Armenian University
Landessternwarte Heidelberg
Aix-Marseille Université
University of Namibia
North-West University
Institute for Nuclear Physics
c/o DESY
University of the Witwatersrand, Johannesburg
Astroparticule and Cosmol APC
Linnaeus University, Växjö
University of Tübingen
LUTH - Laboratoire de l'Univers et de ses Theories
Sorbonne Université
Université Savoie Mont Blanc
Universite Paris-Saclay
University of Oxford
University of Potsdam
University of Adelaide
Ip Paris
Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
Laboratoire Univers et Particules de Montpellier
UMR 5797
University of Innsbruck
Universität Hamburg
Jagiellonian University
Nicolaus Copernicus University
Rikkyo University
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
Humboldt-Universität zu Berlin
University of Leicester
University of Amsterdam
Yerevan Physics Institute
University of Tokyo
Konan University
RIKEN (The Institute of Physical and Chemical Research)
University of the Free State

Research output: Contribution to journal › Article › peer-review

Abstract

Recurrent novae are repeating thermonuclear explosions in the outer layers of white dwarfs, due to the accretion of fresh material from a binary companion. The shock generated when ejected material slams into the companion star's wind can accelerate particles. We report very-high-energy [VHE; ≳100 giga-electron volts] gamma rays from the recurrent nova RS Ophiuchi, up to 1 month after its 2021 outburst, observed using the High Energy Stereoscopic System (H.E.S.S.). The temporal profile of VHE emission is similar to that of lower-energy giga-electron volt emission, indicating a common origin, with a 2-day delay in peak flux. These observations constrain models of time-dependent particle energization, favoring a hadronic emission scenario over the leptonic alternative. Shocks in dense winds provide favorable environments for efficient acceleration of cosmic rays to very high energies.

Original language	English
Pages (from-to)	77-80
Number of pages	4
Journal	Science
Volume	376
Issue number	6588
DOIs	https://doi.org/10.1126/science.abn0567
Publication status	Published - 1 Apr 2022

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@article{319918d35e34485d826f2fb59ca00164,

title = "Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi",

abstract = "Recurrent novae are repeating thermonuclear explosions in the outer layers of white dwarfs, due to the accretion of fresh material from a binary companion. The shock generated when ejected material slams into the companion star's wind can accelerate particles. We report very-high-energy [VHE; ≳100 giga-electron volts] gamma rays from the recurrent nova RS Ophiuchi, up to 1 month after its 2021 outburst, observed using the High Energy Stereoscopic System (H.E.S.S.). The temporal profile of VHE emission is similar to that of lower-energy giga-electron volt emission, indicating a common origin, with a 2-day delay in peak flux. These observations constrain models of time-dependent particle energization, favoring a hadronic emission scenario over the leptonic alternative. Shocks in dense winds provide favorable environments for efficient acceleration of cosmic rays to very high energies.",

author = "\{H.E.S.S. Collaboration\} and F. Aharonian and Benkhali, \{F. Ait\} and Ang{\"u}ner, \{E. O.\} and H. Ashkar and M. Backes and V. Baghmanyan and Martins, \{V. Barbosa\} and R. Batzofin and Y. Becherini and D. Berge and K. Bernl{\"o}hr and B. Bi and M. B{\"o}ttcher and C. Boisson and J. Bolmont and \{de Bony de Lavergne\}, M. and M. Breuhaus and R. Brose and F. Brun and S. Caroff and S. Casanova and M. Cerruti and T. Chand and A. Chen and G. Cotter and Mbarubucyeye, \{J. Damascene\} and A. Djannati-Ata{\"i} and A. Dmytriiev and V. Doroshenko and C. Duffy and K. Egberts and Ernenwein, \{J. P.\} and S. Fegan and K. Feijen and A. Fiasson and \{de Clairfontaine\}, \{G. Fichet\} and G. Fontaine and M. F{\"u}{\ss}ling and S. Funk and S. Gabici and Gallant, \{Y. A.\} and S. Ghafourizadeh and G. Giavitto and L. Giunti and D. Glawion and Glicenstein, \{J. F.\} and Grondin, \{M. H.\} and G. Hermann and Hinton, \{J. A.\} and M. H{\"o}rbe",

year = "2022",

month = apr,

day = "1",

doi = "10.1126/science.abn0567",

language = "English",

volume = "376",

pages = "77--80",

journal = "Science",

issn = "0036-8075",

number = "6588",

}

TY - JOUR

T1 - Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi

AU - H.E.S.S. Collaboration

AU - Aharonian, F.

AU - Benkhali, F. Ait

AU - Angüner, E. O.

AU - Ashkar, H.

AU - Backes, M.

AU - Baghmanyan, V.

AU - Martins, V. Barbosa

AU - Batzofin, R.

AU - Becherini, Y.

AU - Berge, D.

AU - Bernlöhr, K.

AU - Bi, B.

AU - Böttcher, M.

AU - Boisson, C.

AU - Bolmont, J.

AU - de Bony de Lavergne, M.

AU - Breuhaus, M.

AU - Brose, R.

AU - Brun, F.

AU - Caroff, S.

AU - Casanova, S.

AU - Cerruti, M.

AU - Chand, T.

AU - Chen, A.

AU - Cotter, G.

AU - Mbarubucyeye, J. Damascene

AU - Djannati-Ataï, A.

AU - Dmytriiev, A.

AU - Doroshenko, V.

AU - Duffy, C.

AU - Egberts, K.

AU - Ernenwein, J. P.

AU - Fegan, S.

AU - Feijen, K.

AU - Fiasson, A.

AU - de Clairfontaine, G. Fichet

AU - Fontaine, G.

AU - Füßling, M.

AU - Funk, S.

AU - Gabici, S.

AU - Gallant, Y. A.

AU - Ghafourizadeh, S.

AU - Giavitto, G.

AU - Giunti, L.

AU - Glawion, D.

AU - Glicenstein, J. F.

AU - Grondin, M. H.

AU - Hermann, G.

AU - Hinton, J. A.

AU - Hörbe, M.

PY - 2022/4/1

Y1 - 2022/4/1

N2 - Recurrent novae are repeating thermonuclear explosions in the outer layers of white dwarfs, due to the accretion of fresh material from a binary companion. The shock generated when ejected material slams into the companion star's wind can accelerate particles. We report very-high-energy [VHE; ≳100 giga-electron volts] gamma rays from the recurrent nova RS Ophiuchi, up to 1 month after its 2021 outburst, observed using the High Energy Stereoscopic System (H.E.S.S.). The temporal profile of VHE emission is similar to that of lower-energy giga-electron volt emission, indicating a common origin, with a 2-day delay in peak flux. These observations constrain models of time-dependent particle energization, favoring a hadronic emission scenario over the leptonic alternative. Shocks in dense winds provide favorable environments for efficient acceleration of cosmic rays to very high energies.

AB - Recurrent novae are repeating thermonuclear explosions in the outer layers of white dwarfs, due to the accretion of fresh material from a binary companion. The shock generated when ejected material slams into the companion star's wind can accelerate particles. We report very-high-energy [VHE; ≳100 giga-electron volts] gamma rays from the recurrent nova RS Ophiuchi, up to 1 month after its 2021 outburst, observed using the High Energy Stereoscopic System (H.E.S.S.). The temporal profile of VHE emission is similar to that of lower-energy giga-electron volt emission, indicating a common origin, with a 2-day delay in peak flux. These observations constrain models of time-dependent particle energization, favoring a hadronic emission scenario over the leptonic alternative. Shocks in dense winds provide favorable environments for efficient acceleration of cosmic rays to very high energies.

UR - https://www.scopus.com/pages/publications/85127592016

U2 - 10.1126/science.abn0567

DO - 10.1126/science.abn0567

M3 - Article

C2 - 35271303

AN - SCOPUS:85127592016

SN - 0036-8075

VL - 376

SP - 77

EP - 80

JO - Science

JF - Science

IS - 6588

ER -

Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi

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