SMuK 2023 – scientific programme

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EP: Fachverband Extraterrestrische Physik

EP 15: Astrophysics: Cosmology

EP 15.1: Talk

Friday, March 24, 2023, 14:00–14:15, HSZ/0004

Searching for sub-TeV neutrino counterparts for sub-threshold GW events — •Tista Mukherjee — Institute for Astroparticle Physics (IAP), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

Neutrinos have been identified as promising cosmic messenger which can carry useful information about their astrophysical sources. Similarly, gravitational wave (GW) and photons can also serve the same purpose. By combining information from two or more than two messengers, we can perform multi-messenger studies which in principle, can provide us more complete information about an astrophysical site. So far, we have been able to correlate photons and neutrinos emitted from a blazar, now very famously known as the `TXS blazar' in 2017. We also identified photons emitted from a binary neutral star (BNS) system, which was also the progenitor of GW, marked as GW170817 event by the LIGO-Virgo collaboration. But, a correlation between GW and neutrinos is yet to be identified, which serves as the motivation for my ongoing work. Here, I present the current status of it, where I am looking for sub-TeV neutrinos detected by IceCube, spatially and temporally correlated with sub-threshold GW events identified from the Gravitational Wave Transient Catalog (GWTC) 2.1.