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  INTEGRAL search for GW counterparts and the GRB170817A/GW170817 detection

Ubertini, P., Bazzano, A., Natalucci, L., Rodi, J., Mereghetti, S., Bozzo, E., et al. (2019). INTEGRAL search for GW counterparts and the GRB170817A/GW170817 detection. In M. Tavani (Ed.), Rendiconti Lincei. Scienze Fisiche e Naturali (1, pp. 65-70). doi:10.1007/s12210-019-00767-y.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-A2F8-C Version Permalink: http://hdl.handle.net/21.11116/0000-0005-A2F9-B
Genre: Conference Paper

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 Creators:
Ubertini, Pietro, Author
Bazzano, A., Author
Natalucci, L., Author
Rodi, J., Author
Mereghetti, S., Author
Bozzo, E., Author
Courvoisier, T. J.‑L., Author
Ferrigno, C., Author
Savchenko, V., Author
Kuulkers, E., Author
Brandt, S., Author
Chenevez, J., Author
Diehl, R.1, Author              
von Kienlin, A., Author
Hanlon, L., Author
Martin‑Carrillo, A., Author
Jourdain, E., Author
Roques, J.‑P., Author
Laurent, P., Author
Lebrun, F., Author
Lutovinov, A., AuthorSunyaev, R., Author more..
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: The INTernational Gamma-ray Astrophysics Laboratory (INTEGRAL) has detected the Short Gamma-Ray Burst (SGRB), GRB170817A with a signal-to-noise ratio of 4.6 and demonstrated its association with the binary neutron star merging event GW170817 detected by the LIGO and Virgo gravitational wave observatories. The association was immediately evident due to the timing and positional coincidence of this event with the initial error box, derived from gravitational wave (GW) measurements and the contemporaneous detection of a similar gamma-ray signal by Fermi/GBM. This SGRB was detected by the INTEGRAL SPI ACS about 1.7 s after the end of the GW emission, with a fluence of ( 1.4 ± 0.4 ) ×10−7 erg cm−2 in the 75–2000 keV energy range. After the serendipitous detection of the short prompt GRB, INTEGRAL continued the planned observation for about 20 h, and then performed a targeted follow-up ToO observation lasting several days. This ToO observation provided a stringent upper limit on any electromagnetic signal in a very broad energy range, from 3 keV to 8 MeV, in particular constraining the soft gamma-ray afterglow flux to < 7.1 ×−11 erg cm−2 s−1 in the range 80–300 keV. Exploiting the unique capabilities of INTEGRAL, we constrained the gamma-ray line emission intensity from radioactive decays expected to be the principal source of the energy behind a kilonova event following a NS–NS coalescence. Finally, we put a stringent upper limit on any delayed bursting activity, for example, from a newly formed magnetar. The INTEGRAL prompt detection and the subsequent continuous observations at all wavelengths have provided important constraints on the high energy emission of the resulting kilonova and the post inspiral object: NS, BH, or a new exotic object.

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Language(s): eng - English
 Dates: 2019-02-07
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s12210-019-00767-y
Other: LOCALID: 3192734
 Degree: -

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Title: Symposium on Decade of AGILE - Results, Challenges and Prospects of Gamma Ray Astrophysics
Place of Event: Rome, ITALY
Start-/End Date: 2017-12-11 - 2017-12-13

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Title: Rendiconti Lincei. Scienze Fisiche e Naturali
Source Genre: Proceedings
 Creator(s):
Tavani , Marco, Editor
Affiliations:
-
Publ. Info: 1
Pages: - Volume / Issue: 30 Sequence Number: - Start / End Page: 65 - 70 Identifier: ISSN: 2037-4631
ISSN: 1720-0776