Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)

SGR 0755-2933: A new high-mass X-ray binary with the wrong name




Julkaisun tekijät: Doroshenko Victor, Santangelo Andrea, Tsygankov Sergey S., Ji Long

Kustantaja: EDP Sciences

Julkaisuvuosi: 2021

Journal: Astronomy and Astrophysics

Tietokannassa oleva lehden nimi: Astronomy and Astrophysics

Volyymi: 647

eISSN: 1432-0746

DOI: http://dx.doi.org/10.1051/0004-6361/202039785

Verkko-osoite: https://doi.org/10.1051/0004-6361/202039785

Rinnakkaistallenteen osoite: https://arxiv.org/abs/2101.10834


Tiivistelmä

The soft gamma-ray repeater candidate SGR 0755-2933 was discovered in 2016 by Swift/BAT, which detected a short (∼30 ms), powerful burst typical of magnetars. To understand the nature of the source, we present here an analysis of follow-up observations of the tentative soft-X-ray counterpart of the source obtained with Swift/XRT, NuSTAR, and Chandra. From our analysis we conclude that, based on the observed counterpart position and properties, SGR 0755-2933 is not a soft gamma-ray repeater but rather a new high-mass X-ray binary. We suggest it be referred to as 2SXPS J075542.5-293353. We therefore conclude that the available data do not allow us to confirm existence and identify the true soft-X-ray counterpart to the burst event. The presence of a soft counterpart is nevertheless essential to unambiguously associate the burst with a magnetar flare, and we conclude that the magnetar origin of the burst and a precise burst location remain uncertain and require further investigation.


Ladattava julkaisu

This is an electronic reprint of the original article.
This reprint may differ from the original in pagination and typographic detail. Please cite the original version.




Last updated on 2022-06-10 at 13:06