| Issue |
A&A
Volume 701, September 2025
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|---|---|---|
| Article Number | C2 | |
| Number of page(s) | 2 | |
| Section | Letters to the Editor | |
| DOI | https://doi.org/10.1051/0004-6361/202557075e | |
| Published online | 26 September 2025 | |
Letter to the Editor
Recovery of the X-ray polarisation of Swift J1727.8−1613 after the soft-to-hard spectral transition (Corrigendum)
1
Astronomical Institute of the Czech Academy of Sciences, Boční II 1401/1, 14100 Praha 4, Czech Republic
2
Department of Physics and Astronomy, FI-20014 University of Turku, Finland
3
Nordita, KTH Royal Institute of Technology and Stockholm University, Hannes Alfvéns väg 12, SE-10691 Stockholm, Sweden
4
Space Research Institute, Russian Academy of Sciences, Profsoyuznaya 84/32, 117997 Moscow, Russia
5
NASA Marshall Space Flight Center, Huntsville, AL 35812, USA
6
Dipartimento di Matematica e Fisica, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
7
School of Mathematics, Statistics, and Physics, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
8
INAF Istituto di Astrofisica e Planetologia Spaziali, Via del Fosso del Cavaliere 100, 00133 Roma, Italy
9
INAF Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047 Selargius (CA), Italy
10
Physics Department, McDonnell Center for the Space Sciences, and Center for Quantum Leaps, Washington University in St. Louis, St. Louis, MO 63130, USA
11
Université Grenoble Alpes, CNRS, IPAG, 38000 Grenoble, France
12
INAF Istituto di Astrofisica Spaziale e Fisica Cosmica, Via U. La Malfa 153, I-90146 Palermo, Italy
13
Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
14
Anton Pannekoek Institute for Astronomy, Amsterdam, Science Park 904, NL-1098 NH, The Netherlands
15
Astronomical Institute, Faculty of Mathematics and Physics, Charles University, V Holešovičkach 2, 18000 Prague 8, Czech Republic
16
Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
17
X-ray Astrophysics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
18
California Institute of Technology, Pasadena, CA 91125, USA
19
Agenzia Spaziale Italiana, Via della Scienza 5, 09047 Selargius (CA), Italy
20
Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Via Marzolo 8, 35131 Padova, Italy
21
Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, I-20133 Milano, Italy
22
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain
23
Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
24
Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA
25
Physics Department, Tor Vergata University of Rome, Via della Ricerca Scientifica 1, 00133 Rome, Italy
26
INFN – Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy
27
Graduate Institute of Astronomy, National Central University, 300 Zhongda Road, Zhongli, Taoyuan 32001, Taiwan
28
Laboratory for Space Research, The University of Hong Kong, Cyberport 4, Hong Kong
29
National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, 100101 Beijing, PR China
30
Kapteyn Astronomical Institute, University of Groningen, P.O. BOX 800 9700 AV Groningen, The Netherlands
⋆ Corresponding author: jakub.podgorny@asu.cas.cz
Key words: errata / addenda / accretion / accretion disks / black hole physics / polarization / X-rays: binaries / X-rays: individuals: Swift J1727.8−1613
In Fig. 4, the X-ray hardness value for observation 8 was plotted using a count-based ratio instead of the energy-flux-based ratio used for other points in the figure. The correction of the position of this point in Fig. 4 does not affect any other figures, results, or conclusions in the paper.
 |
Fig. 1. Corrected Fig. 4: X-ray hardness of observation 8 from IXPE data. |
© The Authors 2025
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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All Figures
|
Fig. 1. Corrected Fig. 4: X-ray hardness of observation 8 from IXPE data. |
| In the text | |
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