XRISM/Xtend Transient Search (XTS) detected an X-ray high state of 2SXPS J171724.0-371717

Links to Files

https://www.astronomerstelegram.org/?read=17060

Permanent Link

http://hdl.handle.net/11603/40321

Collections

UMBC Physics Department
UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0002-4656-6881

Date

2025-03-02

Type of Work

articles
Text

Department

Program

Citation of Original Publication

Sugai, H., K. Fukushima, K. Hayashi, K. Pottschmidt, et al. “XRISM/Xtend Transient Search (XTS) Detected an X-Ray High State of 2SXPS J171724.0-371717.” The Astronomer’s Telegram, March 2, 2025. https://www.astronomerstelegram.org/?read=17060.

Rights

This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.

Subjects

increase in X-ray intensity
XRISM/Xtend Transient Search (XTS)
X-ray source XRISM J1717-3717

Abstract

XRISM/Xtend Transient Search (XTS) detected an increase in X-ray intensity from an X-ray source XRISM J1717-3717 on 2025-02-28 TT. The source position is determined to be (R.A., Dec.) = (259.347, -37.28648), with a systematic error of ∼ 40 arcsec. A plausible counterpart is 2SXPS J171724.0-371717, which is located ∼ 11 arcsec apart from the position of XRISM J1717-3717. The X-ray flux in the 0.4 – 10 keV band increased logarithmically from 2 × 10⁻¹² erg s⁻¹ cm⁻² to 7 × 10⁻¹² erg s⁻¹ cm⁻² between 2025-02-28 13:30 TT and 2025-02-28 22:30 TT, and remained at the same level until 2025-03-01 15:00 TT. We estimated the systematic error for the source position from the separations between the detected sources with the corresponding counterparts in the same field of view.