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

Abstract

The Spectrum-Roentgen-Gamma (SRG) observatory is currently conducting its 4-year all-sky X-ray survey, started on December 12, 2019. 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 >4 keV, and to search for previously unknown X-ray sources. Puppis A was observed in 2019-2020, conducting 1.5 x 1.5 degrees shallow surveys with an exposure of 36 hours. Additional deep pointed observations of the central part of Puppis A were carried out in 2021 lasted 31 hours 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 catalogs, and one newly discovered X-ray emitter.

arXiv comment5 pages, 7 figures, accepted for publication in MNRAS

References in corpus (18)

• The eROSITA X-ray telescope on SRG
• The Chandra Source Catalog
• A Catalog of 200 Galaxy Clusters Serendipitously Detected in the ROSAT PSPC Pointed Observations
• The SRG X-ray orbital observatory, its telescopes and first scientific results
• The ART-XC telescope on board the SRG observatory
• Chandra X-ray Observation of a Mature Cloud-Shock Interaction in the Bright Eastern Knot Region of Puppis A
• NuSTAR Hard X-ray Survey of the Galactic Center Region II: X-ray Point Sources
• The Proper Motion of the Central Compact Object RX J0822-4300 in the Supernova Remnant Puppis A
• X-ray Emitting Ejecta in Puppis A Observed with Suzaku
• Observations of the neutral hydrogen surrounding the radio quiet neutron star RX J0822-4300 in Puppis A
• X-ray observations of RX J0822-4300 and Puppis-A
• High-Resolution X-Ray Spectroscopy of the Galactic Supernova Remnant Puppis A with the XMM-Newton RGS
• Discovery of X-Ray-Emitting O-Ne-Mg-Rich Ejecta in the Galactic Supernova Remnant Puppis A
• The most complete and detailed X-ray view of the SNR Puppis A
• The SNR Puppis A Revisited with Seven Years of Fermi Large Area Telescope Observations
• The slowest spinning X-ray pulsar in an extragalactic globular cluster
• High resolution CO observations towards the Bright Eastern Knot of the SNR Puppis A
• Global X-Ray Properties of the Vela and Puppis A Supernova Remnants

Cited by in corpus (1)

• A global view of shocked plasma in the supernova remnant Puppis A provided by SRG/eROSITA