ORCID Profile
0000-0002-8709-8236
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Publisher: American Astronomical Society
Date: 04-2021
Abstract: A search for astrophysical pointlike neutrino sources using the data collected by the ANTARES detector between 2007 January 29 and 2017 December 31 is presented. A likelihood method is used to assess the significance of an excess of muon neutrinos inducing track-like events in correlation with the location of a list of possible sources. Different sets of objects are tested in the analysis: (a) a subs le of the Fermi 3LAC catalog of blazars, (b) a jet-obscured population of active galactic nuclei, (c) a s le of hard X-ray selected radio galaxies, (d) a star-forming galaxy catalog, and (e) a public s le of 56 very-high-energy track events from the IceCube experiment. None of the tested sources shows a significant association with the s le of neutrinos detected by ANTARES. The smallest p -value is obtained for the catalog of radio galaxies with an equal-weights hypothesis, with a pre-trial p -value equivalent to a 2.8 σ excess, which is equivalent to 1.6 σ post-trial. In addition, the results of a dedicated analysis for the blazar MG3 J225517+2409 are also reported: this source is found to be the most significant within the Fermi 3LAC s le, with five ANTARES events located less than one degree from the source. This blazar showed evidence of flaring activity in Fermi data, in spacetime coincidence with a high-energy track detected by IceCube. An a posteriori significance of 2.6 σ for the combination of ANTARES and IceCube data is reported.
Publisher: American Astronomical Society
Date: 04-2020
Publisher: American Physical Society (APS)
Date: 06-2020
Publisher: Elsevier BV
Date: 11-2020
Publisher: Springer Science and Business Media LLC
Date: 05-2020
DOI: 10.1140/EPJC/S10052-020-8015-6
Abstract: An offline search for a neutrino counterpart to gravitational-wave (GW) events detected during the second observation run (O2) of Advanced-LIGO and Advanced-Virgo performed with ANTARES data is presented. In addition to the search for long tracks induced by $$\\nu _\\mu $$ ν μ ( $${\\overline{\\nu }}_{\\mu }$$ ν ¯ μ ) charged current interactions, a search for showering events induced by interactions of neutrinos of any flavour is conducted. The severe spatial and time coincidence provided by the gravitational-wave alert allows regions above the detector horizon to be probed, extending the ANTARES sensitivity over the entire sky. The results of this all-neutrino-flavour and all-sky time dependent analysis are presented. The search for prompt neutrino emission within ±500 s around the time of six GW events yields no neutrino counterparts. Upper limits on the neutrino spectral fluence and constraints on the isotropic energy radiated via high-energy neutrinos (from a few TeV to a few tens of PeV) are set for each GW event analysed.
Publisher: Elsevier BV
Date: 11-2020
Publisher: American Physical Society (APS)
Date: 27-10-2020
Publisher: SPIE-Intl Soc Optical Eng
Date: 23-12-2019
Publisher: IOP Publishing
Date: 08-10-2020
Publisher: Elsevier BV
Date: 06-2020
No related grants have been discovered for Matthias Bissinger.