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AGILE Observations of GW Events

Published online by Cambridge University Press:  29 January 2019

Francesco Verrecchia ,
Marco Tavani  and
Immacolata Donnarumma
Francesco Verrecchia
Affiliation:
ASI Space Science Data Center (SSDC), via del Politecnico, I-00133, Roma, Italy email: [email protected] INAF-OAR, via Frascati 33, I-00078, Monte Porzio Catone (Roma), Italy
Marco Tavani
Affiliation:
INAF-IAPS, via del Fosso del Cavaliere 100, I-00133 Roma, Italy Dipartimento di Fisica, Università di Roma “Tor Vergata”, via della Ricerca Scientifica 1, I-00133 Roma, Italy Gran Sasso Science Institute, viale Francesco Crispi 7, I-67100 L’Aquila, Italy
Immacolata Donnarumma
Affiliation:
INAF-IAPS, via del Fosso del Cavaliere 100, I-00133 Roma, Italy ASI, via del Politecnico snc, I-00133, Roma, Italy
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Abstract

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AGILE is a space mission of the Italian Space Agency dedicated to γ-ray astrophysics, launched in 2007. AGILE performed dedicated real-time searches for possible γ-ray counterparts of gravitational wave (GW) events detected by the LIGO-Virgo scientific Collaboration (LVC) during the O2 observation run. We present a review of AGILE observations of GW events, starting with the first, GW150914, which was a test case for future searches. We focus here on the main characteristics of the observations of the most important GW events detected in 2017, i.e. GW170104 and GW170817. In particular, for the former event we published γ-ray upper limits (ULs) in the 50 MeV – 10 GeV energy band together with a detailed analysis of a candidate precursor event in the Mini-Calorimeter data. As for GW170817, we published a set of constraining γ-ray ULs obtained for integrations preceding and following the event time. These results allow us to establish important constraints on the γ-ray emission from a possible magnetar-like remnant in the first ~1000 s following T0. AGILE is a major player in the search of electromagnetic counterparts of GW events, and its enhanced detection capabilities in hard X-ray/MeV/GeV ranges will play a crucial role in the future O3 observing run.

Keywords

gravitational wavesgamma rays: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S338: Gravitational Wave Astrophysics: Early Results from Gravitational Wave Searches and Electromagnetic Counterparts , October 2017 , pp. 84 - 89
Copyright
Copyright © International Astronomical Union 2019 

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