GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar?
We report the results on the short gamma-ray burst GRB 241107A, obtained with the IBIS instrument on board the INTEGRAL satellite. The burst had a duration of about 0.2 s, a fluence of 8 × 10 ^−7 erg cm ^−2 in the 20 keV–10 MeV range, and a hard spectrum, characterized by a peak energy of 680 keV. T...
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2025-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/ada6b7 |
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| author | James Craig Rodi Dominik Patryk Pacholski Sandro Mereghetti Edoardo Arrigoni Angela Bazzano Lorenzo Natalucci Ruben Salvaterra Pietro Ubertini |
| author_facet | James Craig Rodi Dominik Patryk Pacholski Sandro Mereghetti Edoardo Arrigoni Angela Bazzano Lorenzo Natalucci Ruben Salvaterra Pietro Ubertini |
| author_sort | James Craig Rodi |
| collection | DOAJ |
| description | We report the results on the short gamma-ray burst GRB 241107A, obtained with the IBIS instrument on board the INTEGRAL satellite. The burst had a duration of about 0.2 s, a fluence of 8 × 10 ^−7 erg cm ^−2 in the 20 keV–10 MeV range, and a hard spectrum, characterized by a peak energy of 680 keV. The position of GRB 241107A has been precisely determined because it fell inside the imaging field of view of the IBIS coded mask instrument. The presence of the nearby galaxy PGC 86046 in the 3′ radius error region suggests that GRB 241107A might be a giant flare from a magnetar rather than a canonical short gamma-ray burst. For the 4.1 Mpc distance of PGC 86046, the isotropic energy of 1.6 × 10 ^45 erg is in agreement with this hypothesis, which is also supported by the time-resolved spectral properties similar to those of the few other extragalactic magnetars giant flares detected so far. |
| format | Article |
| id | doaj-art-99c6c421fe584e0c82f53d49892064f2 |
| institution | Kabale University |
| issn | 2041-8205 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj-art-99c6c421fe584e0c82f53d49892064f22025-01-22T17:23:49ZengIOP PublishingThe Astrophysical Journal Letters2041-82052025-01-019792L2510.3847/2041-8213/ada6b7GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar?James Craig Rodi0https://orcid.org/0000-0003-2126-5908Dominik Patryk Pacholski1https://orcid.org/0009-0001-3911-9266Sandro Mereghetti2https://orcid.org/0000-0003-3259-7801Edoardo Arrigoni3https://orcid.org/0009-0001-9705-8019Angela Bazzano4https://orcid.org/0000-0002-2017-4396Lorenzo Natalucci5https://orcid.org/0000-0002-6601-9543Ruben Salvaterra6https://orcid.org/0000-0002-9393-8078Pietro Ubertini7https://orcid.org/0000-0003-0601-0261INAF—Istituto di Astrofisica e Planetologia Spaziali di Roma , Via del Fosso del Cavaliere 100, 00133 Roma, ItalyINAF — Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano, Via A. Corti 12, 20133 Milano, Italy; Università degli Studi di Milano Bicocca , Dipartimento di Fisica G. Occhialini, Piazza della Scienza 3, 20126 Milano, ItalyINAF — Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano, Via A. Corti 12, 20133 Milano, ItalyINAF — Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano, Via A. Corti 12, 20133 Milano, Italy; Università degli Studi di Milano Bicocca , Dipartimento di Fisica G. Occhialini, Piazza della Scienza 3, 20126 Milano, ItalyINAF—Istituto di Astrofisica e Planetologia Spaziali di Roma , Via del Fosso del Cavaliere 100, 00133 Roma, ItalyINAF—Istituto di Astrofisica e Planetologia Spaziali di Roma , Via del Fosso del Cavaliere 100, 00133 Roma, ItalyINAF — Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano, Via A. Corti 12, 20133 Milano, ItalyINAF—Istituto di Astrofisica e Planetologia Spaziali di Roma , Via del Fosso del Cavaliere 100, 00133 Roma, ItalyWe report the results on the short gamma-ray burst GRB 241107A, obtained with the IBIS instrument on board the INTEGRAL satellite. The burst had a duration of about 0.2 s, a fluence of 8 × 10 ^−7 erg cm ^−2 in the 20 keV–10 MeV range, and a hard spectrum, characterized by a peak energy of 680 keV. The position of GRB 241107A has been precisely determined because it fell inside the imaging field of view of the IBIS coded mask instrument. The presence of the nearby galaxy PGC 86046 in the 3′ radius error region suggests that GRB 241107A might be a giant flare from a magnetar rather than a canonical short gamma-ray burst. For the 4.1 Mpc distance of PGC 86046, the isotropic energy of 1.6 × 10 ^45 erg is in agreement with this hypothesis, which is also supported by the time-resolved spectral properties similar to those of the few other extragalactic magnetars giant flares detected so far.https://doi.org/10.3847/2041-8213/ada6b7Gamma-ray burstsMagnetars |
| spellingShingle | James Craig Rodi Dominik Patryk Pacholski Sandro Mereghetti Edoardo Arrigoni Angela Bazzano Lorenzo Natalucci Ruben Salvaterra Pietro Ubertini GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar? The Astrophysical Journal Letters Gamma-ray bursts Magnetars |
| title | GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar? |
| title_full | GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar? |
| title_fullStr | GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar? |
| title_full_unstemmed | GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar? |
| title_short | GRB 241107A: A Giant Flare from a Close-by Extragalactic Magnetar? |
| title_sort | grb 241107a a giant flare from a close by extragalactic magnetar |
| topic | Gamma-ray bursts Magnetars |
| url | https://doi.org/10.3847/2041-8213/ada6b7 |
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