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An X-Ray and Radio ...
An X-Ray and Radio View of the 2022 Reactivation of the Magnetar SGR J1935+2154
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- Ibrahim, A. Y. (author)
- Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC,Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC)
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- Borghese, A. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Coti Zelati, Francesco (author)
- Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC
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- Parent, E. (author)
- Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC,Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC)
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- Marino, A. (author)
- Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC
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- Ould-Boukattine, O. S. (author)
- Anton Pannekoek Institute for Astronomy
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- Rea, N. (author)
- Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC,Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC)
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- Ascenzi, S. (author)
- Gran Sasso Science Institute (GSSI),Laboratori Nazionali del Gran Sasso,Istituto nazionale di astrofisica (INAF)
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- Pacholski, D. P. (author)
- Universita' degli Studi di Milano-Bicocca,University of Milano-Bicocca,Istituto nazionale di astrofisica (INAF)
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- Mereghetti, S. (author)
- Istituto nazionale di astrofisica (INAF)
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- Israel, G. L. (author)
- Osservatorio Astronomico di Roma
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- Tiengo, A. (author)
- Istituto nazionale di astrofisica (INAF)
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- Possenti, A. (author)
- Istituto nazionale di astrofisica (INAF)
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- Burgay, M. (author)
- Istituto nazionale di astrofisica (INAF)
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- Turolla, R. (author)
- University College London (UCL),Università Degli Studi di Padova,University of Padua
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- Zane, S. (author)
- University College London (UCL)
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- Esposito, P. (author)
- Istituto nazionale di astrofisica (INAF)
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- Götz, D. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Campana, S. (author)
- Istituto nazionale di astrofisica (INAF)
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- Kirsten, Franz, 1983 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gawroński, M. P. (author)
- Uniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University
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- Hessels, J. W. T. (author)
- Netherlands Institute for Radio Astronomy (ASTRON)
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Astrophysical Journal. - 1538-4357 .- 0004-637X. ; 965:1
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.3...
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Abstract
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- Recently, the Galactic magnetar SGR J1935+2154 has garnered attention due to its emission of an extremely luminous radio burst, reminiscent of fast radio bursts (FRBs). SGR J1935+2154 is one of the most active magnetars, displaying flaring events nearly every year, including outbursts as well as short and intermediate bursts. Here, we present our results on the properties of the persistent and bursting X-ray emission from SGR J1935+2154 during the initial weeks following its outburst on 2022 October 10. The source was observed with XMM-Newton and NuSTAR (quasi-)simultaneously during two epochs, separated by ∼5 days. The persistent emission spectrum is well described by an absorbed blackbody plus power-law model up to an energy of ∼25 keV. No significant changes were observed in the blackbody temperature (kT BB ∼ 0.4 keV) and emitting radius (R BB ∼ 1.9 km) between the two epochs. However, we observed a slight variation in the power-law parameters. Moreover, we detected X-ray pulsations in all the data sets and derived a spin-period derivative of P ̇ = 5.52 ( 5 ) × 10 − 11 s s−1. This is 3.8 times larger than the value measured after the first recorded outburst in 2014. Additionally, we performed quasi-simultaneous radio observations using three 25-32 m class radio telescopes for a total of 92.5 hr to search for FRB-like radio bursts and pulsed emission. However, our analysis did not reveal any radio bursts or periodic emission.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Ibrahim, A. Y.
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Borghese, A.
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Coti Zelati, Fra ...
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Parent, E.
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Marino, A.
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Ould-Boukattine, ...
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show more...
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Rea, N.
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Ascenzi, S.
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Pacholski, D. P.
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Mereghetti, S.
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Israel, G. L.
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Tiengo, A.
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Possenti, A.
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Burgay, M.
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Turolla, R.
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Zane, S.
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Esposito, P.
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Götz, D.
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Campana, S.
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Kirsten, Franz, ...
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Gawroński, M. P.
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Hessels, J. W. T ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Astrophysical Jo ...
- By the university
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Chalmers University of Technology