INTEGRAL GPS detects renewed activity from IGR J18483-0311 and GRS 1915+105

V. A. Lepingwell*, J. Chenevez, J. H. Beck, F. Onori, A. Bazzano, M. Fiocchi, A. J. Bird, P. Charles , K. Alizai, L. Natalucci, P. Ubertini, L. Bassani, A. Malizia, V. Sguera, A. Bodaghee, E. Kuulkers

*Corresponding author for this work

Research output: Other contributionNet publication - Internet publicationResearch

Abstract

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INTEGRAL has recently performed public observations of the Scutum Region during the Galactic Plane Scanning program (PI: A. Bazzano) in revolution 2221 (between 2020-04-25 10:47:13 and 2020-04-27 01:10:30 UTC). INTEGRAL detected a number of Galactic sources, notably IGR J18483-0311 and GRS 1915+105.

Renewed activity from the SFXT IGR J18483-0311 was detected by INTEGRAL at the following flux levels over the whole revolution:
Instrument Flux E range Significance Effective
10-10 erg cm-2 s-1 (mCrab) keV sigma exp.time (ks)
IBIS/ISGRI 1.8 ± 0.2 (16.7 ± 1.4) 22-60 11.7 10.2
JEM-X 3.5 ± 0.3 (23.0 ± 2.0) 3-10 23.0 21.5
JEM-X 3.3 ± 0.5 (31.0 ± 5.0) 10-25 23.0 21.5

Activity from microquasar GRS 1915+105 has been recently reported (ATel #13652) and was also detected by INTEGRAL as follows:
Instrument Flux E range Significance Effective
10-10 erg cm-2 s-1 (mCrab) keV sigma exp.time (ks)
IBIS/ISGRI 1.8 ± 0.2 (16.7 ± 1.5) 22-60 11.3 9.3
JEM-X 1.7 ± 0.3 (11.5 ± 2.5) 3-10 7.0 23.0
JEM-X 1.6 ± 0.7 (15.0 ± 7.0) 10-25 7.0 23.0

All the data have been analysed using the Offline Software Analysis version 11.0 (OSA11).

Further INTEGRAL Galactic Plane Scanning observations are planned in the coming days. Results from the Galactic Plane Scanning are made publicly available at: http://gps.iaps.inaf.it
Original languageEnglish
Publication date28 Apr 2020
Publication statusPublished - 28 Apr 2020
SeriesThe Astronomer's telegram
NumberATel #13676

Keywords

  • X-ray
  • Binary
  • Black hole
  • Transient

Cite this

Lepingwell, V. A., Chenevez, J., Beck, J. H., Onori, F., Bazzano, A., Fiocchi, M., Bird, A. J., Charles , P., Alizai, K., Natalucci, L., Ubertini, P., Bassani, L., Malizia, A., Sguera, V., Bodaghee, A., & Kuulkers, E. (2020, Apr 28). INTEGRAL GPS detects renewed activity from IGR J18483-0311 and GRS 1915+105. The Astronomer's telegram, No. ATel #13676 http://www.astronomerstelegram.org/?read=13676