Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433

H.E.S.S. Collaboration

doi:10.1126/science.adi2048

Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433

H.E.S.S. Collaboration

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

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

Abstract

SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma-ray emission from the parsec-scale jets. These observations trace the energetic electron population and indicate that inverse Compton scattering is the emission mechanism of the gamma rays. Our modeling of the energy-dependent gamma-ray morphology constrains the location of particle acceleration and requires an abrupt deceleration of the jet flow. We infer the presence of shocks on either side of the binary system, at distances of 25 to 30 parsecs, and that self-collimation of the precessing jets forms the shocks, which then efficiently accelerate electrons.

Original language	English
Pages (from-to)	402-406
Number of pages	5
Journal	Science
Volume	383
Issue number	6681
DOIs	https://doi.org/10.1126/science.adi2048
Publication status	Published - 1 Jan 2024

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10.1126/science.adi2048

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@article{8d3517f0b9994234935bb06ae912d030,

title = "Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433",

abstract = "SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma-ray emission from the parsec-scale jets. These observations trace the energetic electron population and indicate that inverse Compton scattering is the emission mechanism of the gamma rays. Our modeling of the energy-dependent gamma-ray morphology constrains the location of particle acceleration and requires an abrupt deceleration of the jet flow. We infer the presence of shocks on either side of the binary system, at distances of 25 to 30 parsecs, and that self-collimation of the precessing jets forms the shocks, which then efficiently accelerate electrons.",

author = "\{H.E.S.S. Collaboration\} and F. Aharonian and \{Ait Benkhali\}, F. and J. Aschersleben and H. Ashkar and M. Backes and \{Barbosa Martins\}, V. 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 J. Borowska and M. Bouyahiaoui and M. Breuhaus and R. Brose and Brown, \{A. M.\} and F. Brun and B. Bruno and T. Bulik and C. Burger-Scheidlin and S. Caroff and S. Casanova and R. Cecil and J. Celic and M. Cerruti and T. Chand and S. Chandra and A. Chen and J. Chibueze and O. Chibueze and G. Cotter and S. Dai and \{Damascene Mbarubucyeye\}, J. and A. Djannati-Ata{\"i} and A. Dmytriiev and V. Doroshenko and K. Egberts and S. Einecke and Ernenwein, \{J. P.\} and M. Filipovic and G. Fontaine and S. Funk and S. Gabici and S. Ghafourizadeh and G. Giavitto and D. Glawion",

year = "2024",

month = jan,

day = "1",

doi = "10.1126/science.adi2048",

language = "English",

volume = "383",

pages = "402--406",

journal = "Science",

issn = "0036-8075",

number = "6681",

}

TY - JOUR

T1 - Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433

AU - H.E.S.S. Collaboration

AU - Aharonian, F.

AU - Ait Benkhali, F.

AU - Aschersleben, J.

AU - Ashkar, H.

AU - Backes, M.

AU - Barbosa Martins, V.

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 - Borowska, J.

AU - Bouyahiaoui, M.

AU - Breuhaus, M.

AU - Brose, R.

AU - Brown, A. M.

AU - Brun, F.

AU - Bruno, B.

AU - Bulik, T.

AU - Burger-Scheidlin, C.

AU - Caroff, S.

AU - Casanova, S.

AU - Cecil, R.

AU - Celic, J.

AU - Cerruti, M.

AU - Chand, T.

AU - Chandra, S.

AU - Chen, A.

AU - Chibueze, J.

AU - Chibueze, O.

AU - Cotter, G.

AU - Dai, S.

AU - Damascene Mbarubucyeye, J.

AU - Djannati-Ataï, A.

AU - Dmytriiev, A.

AU - Doroshenko, V.

AU - Egberts, K.

AU - Einecke, S.

AU - Ernenwein, J. P.

AU - Filipovic, M.

AU - Fontaine, G.

AU - Funk, S.

AU - Gabici, S.

AU - Ghafourizadeh, S.

AU - Giavitto, G.

AU - Glawion, D.

PY - 2024/1/1

Y1 - 2024/1/1

N2 - SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma-ray emission from the parsec-scale jets. These observations trace the energetic electron population and indicate that inverse Compton scattering is the emission mechanism of the gamma rays. Our modeling of the energy-dependent gamma-ray morphology constrains the location of particle acceleration and requires an abrupt deceleration of the jet flow. We infer the presence of shocks on either side of the binary system, at distances of 25 to 30 parsecs, and that self-collimation of the precessing jets forms the shocks, which then efficiently accelerate electrons.

AB - SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma-ray emission from the parsec-scale jets. These observations trace the energetic electron population and indicate that inverse Compton scattering is the emission mechanism of the gamma rays. Our modeling of the energy-dependent gamma-ray morphology constrains the location of particle acceleration and requires an abrupt deceleration of the jet flow. We infer the presence of shocks on either side of the binary system, at distances of 25 to 30 parsecs, and that self-collimation of the precessing jets forms the shocks, which then efficiently accelerate electrons.

UR - https://www.scopus.com/pages/publications/85183488433

U2 - 10.1126/science.adi2048

DO - 10.1126/science.adi2048

M3 - Article

C2 - 38271522

AN - SCOPUS:85183488433

SN - 0036-8075

VL - 383

SP - 402

EP - 406

JO - Science

JF - Science

IS - 6681

ER -

Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433

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