INTEGRAL/JEM-X detects a new outburst of the X-ray transient IGR J12341-6143
ATel #15643; G. K. Jaisawal, J. Chenevez (DTU Space, Denmark) on behalf of the INTEGRAL/ Galactic Plane Scan survey team
on 4 Oct 2022; 19:48 UT
Credential Certification: Gaurava Kumar Jaisawal (gaurava.jaisawal@gmail.com)
Subjects: X-ray, Binary, Transient
Referred to by ATel #: 15670
During INTEGRAL observations of the Galactic Plane scan (PI: A. Bazzano) between 2022-10-01T11:59:01 and 2022-10-03T04:41:14 (revolution 2555), JEM-X detected a source at the location RA = 188.51 deg and Dec = -61.7125 deg (J2000). This position is consistent, within an uncertainty of 24 arcseconds, with the XRT position of IGR J12341-6143 (ATEL #14039).
JEM-X measured the source in two energy bands with the following average fluxes: 6+/-1 mCrab (approx 8.8 × 10-11 erg/s/cm2) in 3-10 keV and 6+/-3 mCrab (approx 3.4 × 10-11 erg/s/cm2) in 10-25 keV.
The light curve does not show any particular flaring activity. The 3-10 keV flux is more than two orders of magnitude higher than the XRT measured quiescence flux in 2020 (ATEL #14039).
The last time JEM-X covered the source location, within four degrees off-axis, was between INTEGRAL revolutions 2448 and 2451 corresponding to 2021-12-21 and 2021-12-29, respectively. The non-detection of the source in these earlier scans indicates a new outburst of IGR J12341-6143.
IGR J12341-6143 is a poorly studied X-ray source, mainly consistent with the nature of a supergiant fast X-ray transient (Sguera et al. 2020, MNRAS 491, 4543).
Follow-up X-ray observations are encouraged.
