GCN CIRCULAR 21507, LIGO/Virgo G298048: INTEGRAL detection of a prompt gamma-ray counterpart

V. Savchenko; S. Mereghetti; C. Ferrigno; E. Kuulkers; A. Bazzano; E. Bozzo; T. J.L. Courvoisier; S. Brandt; R. Diehl; L. Hanlon; P. Laurent; A. Lutovinov; J.P.  Roques; R. Sunyaev; P.  Ubertini

GCN CIRCULAR 21507, LIGO/Virgo G298048: INTEGRAL detection of a prompt gamma-ray counterpart

V. Savchenko, S. Mereghetti, C. Ferrigno, E. Kuulkers, A. Bazzano, E. Bozzo, T. J.L. Courvoisier, S. Brandt, R. Diehl, L. Hanlon, P. Laurent, A. Lutovinov, J.P. Roques, R. Sunyaev, P. Ubertini

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Abstract

We investigated serendipitous INTEGRAL observations carried out at thetime of the LIGO/Virgo burst candidate G298048. The satellite was covering a fraction of the probability of the LIGO-Virgo localization. The best sensitivity depends on the source location. We investigated the SPI-ACS light curves between -30 and +30 s from the trigger time (2017-08-17 12:41:04 UTC, T0) on temporal scales from 0.1 to 100s. In the SPI-ACS data, we detect a short and relatively weak transient with S/N of at T0, with an S/N larger than 3. coincident with the GBM trigger (Connaughton 2017, GCN 21506). Further analysis is ongoing, and will be reported in the coming circulars.

Original language	English
Publication date	17 Aug 2017
Publication status	Published - 17 Aug 2017

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Senest ændret: 17/08/2017

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https://gcn.gsfc.nasa.gov/gcn3/21507.gcn3

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INTEGRAL follow-up observations of gravitational wave event candidates from LIGO and VIRGO
Brandt, S. (Project Participant) & Chenevez, J. (Project Participant)
05/04/2014 → …
Project: Research

Science: Neutronstjerners sammenstød er årets videnskabelige gennembrud
Brandt, S.
21/12/2017
1 Media contribution
Press/Media: Press / Media
Ugens profil: "Vi fejrer en milepæl i astronomien"
Brandt, S.
19/10/2017
1 item of Media coverage
Press/Media: Press / Media

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title = "GCN CIRCULAR 21507, LIGO/Virgo G298048: INTEGRAL detection of a prompt gamma-ray counterpart",

abstract = "We investigated serendipitous INTEGRAL observations carried out at thetime of the LIGO/Virgo burst candidate G298048. The satellite was covering a fraction of the probability of the LIGO-Virgo localization. The best sensitivity depends on the source location. We investigated the SPI-ACS light curves between -30 and +30 s from the trigger time (2017-08-17 12:41:04 UTC, T0) on temporal scales from 0.1 to 100s. In the SPI-ACS data, we detect a short and relatively weak transient with S/N of at T0, with an S/N larger than 3. coincident with the GBM trigger (Connaughton 2017, GCN 21506). Further analysis is ongoing, and will be reported in the coming circulars.",

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AU - Savchenko, V.

AU - Mereghetti, S.

AU - Ferrigno, C.

AU - Kuulkers, E.

AU - Bazzano, A.

AU - Bozzo, E.

AU - Courvoisier, T. J.L.

AU - Brandt, S.

AU - Diehl, R.

AU - Hanlon, L.

AU - Laurent, P.

AU - Lutovinov, A.

AU - Roques, J.P.

AU - Sunyaev, R.

AU - Ubertini, P.

N1 - Senest ændret: 17/08/2017

PY - 2017/8/17

Y1 - 2017/8/17

N2 - We investigated serendipitous INTEGRAL observations carried out at thetime of the LIGO/Virgo burst candidate G298048. The satellite was covering a fraction of the probability of the LIGO-Virgo localization. The best sensitivity depends on the source location. We investigated the SPI-ACS light curves between -30 and +30 s from the trigger time (2017-08-17 12:41:04 UTC, T0) on temporal scales from 0.1 to 100s. In the SPI-ACS data, we detect a short and relatively weak transient with S/N of at T0, with an S/N larger than 3. coincident with the GBM trigger (Connaughton 2017, GCN 21506). Further analysis is ongoing, and will be reported in the coming circulars.

AB - We investigated serendipitous INTEGRAL observations carried out at thetime of the LIGO/Virgo burst candidate G298048. The satellite was covering a fraction of the probability of the LIGO-Virgo localization. The best sensitivity depends on the source location. We investigated the SPI-ACS light curves between -30 and +30 s from the trigger time (2017-08-17 12:41:04 UTC, T0) on temporal scales from 0.1 to 100s. In the SPI-ACS data, we detect a short and relatively weak transient with S/N of at T0, with an S/N larger than 3. coincident with the GBM trigger (Connaughton 2017, GCN 21506). Further analysis is ongoing, and will be reported in the coming circulars.

M3 - Net publication - Internet publication

ER -

GCN CIRCULAR 21507, LIGO/Virgo G298048: INTEGRAL detection of a prompt gamma-ray counterpart

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INTEGRAL follow-up observations of gravitational wave event candidates from LIGO and VIRGO

Press/Media

Science: Neutronstjerners sammenstød er årets videnskabelige gennembrud

Ugens profil: "Vi fejrer en milepæl i astronomien"

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