GCN CIRCULAR 24139: LIGO/Virgo S190408an: INTEGRAL follow-up observations

A. Lutovinov*, S. Molkov, V. Savchenko, C. Ferrigno, E. Bozzo, T. Courvoisier, E. Kuulkers, C. Sanchez, S. Mereghetti, D. Gotz, Ph. Laurent, S. Schanne, B. Cordier, S. Antier, A. Coleiro, A. Goldwurm, J. Rodi, A. Bazzano, L. Natalucci, F. PanessaF. Onori, P. Ubertini, J. Chenevez, S. Brandt, R. Diehl, A. von Kienlin, A. Domingo, J. M. Mas-Hesse, L. Hanlon, A. Martin-Carrillo, M. Doyle , R. Sunyaev, J. P. Roques, E. Jourdain, P. von Ballmoos

*Corresponding author for this work

    Research output: Other contributionNet publication - Internet publicationResearch

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    The INTEGRAL observatory performed follow-up observations of the LIGO/Virgo compact binary merger candidate S190408an (GCN #24069) in the form of the fast TOO operational test.

    The observations were carried out from 2019-04-10 11:13:07 to 2019-04-10 17:10:47 in the staring and hexagonal dithering modes with a total observing time of approximately 18 ks. They were centred on the coordinates RA=350.2, Dec=-56.0 and covered ~42% of the LIGO/Virgo localization probability with the highest sensitivity.

    We do not detect any new sources in the complete IBIS/ISGRI (25-60 keV) mosaicked image with the best sensitivity of 16.5 mCrab (1.6e-10 erg/cm2/s, 3-sigma upper level) in this energy range.
    Original languageEnglish
    Publication date21 Apr 2019
    Number of pages1
    Publication statusPublished - 21 Apr 2019


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