Wide-field X-ray observations of the supernova remnant Puppis A with the SRG/ART-XC telescope

被引：5

作者：

Krivonos, R. ^{[1
]}

Arefiev, V ^{[1
]}

Lapshov, I ^{[1
]}

Filippova, E. ^{[1
]}

Burenin, R. ^{[1
]}

Semena, A. ^{[1
]}

Grebenev, S. ^{[1
]}

Sazonov, S. ^{[1
]}

Shtykovsky, A. ^{[1
]}

Tkachenko, A. ^{[1
]}

Lutovinov, A. ^{[1
]}

机构：

[1] Space Res Inst IKI, Profsoyuznaya 84-32, Moscow 117997, Russia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 510卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

surveys; ISM: supernova remnants; X-rays: general; BRIGHT EASTERN KNOT; QUIET NEUTRON-STAR; EMISSION; EJECTA;

D O I：

10.1093/mnras/stab3647

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Spectrum Roentgen Gamma (SRG) observatory is currently conducting its 4-yr all-sky X-ray survey, started on 2019 December 12. The survey is periodically interrupted for technological operations with the spacecraft. These time intervals are usually used by the Mikhail Pavlinsky ART-XC telescope to perform calibrations. In this context, SRG carried out scanning observations of the Puppis A supernova remnant (SNR) with the aim to check the imaging performance of ART-XC and to optimize the technique of image reconstruction for extended objects. Using the unique imaging capabilities of ART-XC and its uniform coverage of the entire Puppis A region, we attempted to investigate the morphology of this SNR at energies greater than or similar to 4 keV, and to search for previously unknown X-ray sources. Puppis A was observed in 2019-2020, conducting 1.5 degrees x 1.5 degrees shallow surveys with an exposure of 36 h. Additional deep pointed observations of the central part of Puppis A were carried out in 2021 lasted 31 h to highlight the morphology of the extended emission. The X-ray emission of the Puppis A was significantly detected as an extended structure in the 4-6 keV energy band. The morphology of the emission is in general agreement with that observed in soft X-rays previously. The deep sky image of Puppis A obtained with the ART-XC telescope is characterized by a typical SNR shell rim morphology, an extended emission and a bright emission knot in the north-eastern part of the supernova shell. Also, four point X-ray sources have been detected, including three objects identified in catalogues, and one newly discovered X-ray emitter.

引用

页码：3113 / 3118

页数：6

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