Swift J1753.5-0127 detected in hard X-rays with INTEGRAL
ATel #16308; V. Sguera (INAF-OAS Bologna, Italy)
on 25 Oct 2023; 09:56 UT
Credential Certification: Vito Sguera (vito.sguera@inaf.it)
Subjects: X-ray, Black Hole, Transient
Swift J1753.5-0127 is currently undergoing new outburst activity
as initially detected in the optical band (ATel#16262) and subsequently
in the radio (ATel#16281) and soft X-rays (ATel#16272, ATel#16283).
The sky region of Swift J1753.5-0127 was recently covered by INTEGRAL public observations.
The source was in the IBIS/ISGRI field of view from 2023-10-16 09:55 UTC to 2023-10-17 08:14 UTC
for an effective exposure of 1.1 ks. It was detected at 6.1 sigma level (25-60 keV) with a measured flux of 38.5+/-6.3 mCrab or about 3.5 x 10
-10 erg cm
-2 s
-1.
No detection was obtained in the energy band 60-100 keV, the 3 sigma upper is 41 mCrab.
Subsequently, the source was in the IBIS/ISGRI field of view from 2023-10-19 01:13 UTC to 2023-10-20 04:00 UTC with an effective exposure time of 5.8 ks. It was detected at 14.5 sigma level (25-60 keV) with an average flux of 38.4+/-2.6 mCrab, compatible within the errors with the previous measurement. The source was also detected at 6.5 sigma level in the higher energy band 60-100 keV, with a flux of 39.4+/-6.0 mCrab or about 2 x 10
-10 erg cm
-2 s
-1