AT2022cmc/ZTF22aaajecpc: IceCube neutrino search
ATel #15239; Alex Pizzuto (UW-Madison), Marcos Santander (UAlabama) for the IceCube Collaboration
on 25 Feb 2022; 00:25 UT
Credential Certification: Marcos Santander (jmsantander@ua.edu)
Subjects: Neutrinos, Tidal Disruption Event
The IceCube Collaboration (http://icecube.wisc.edu/) reports:
IceCube has performed a search for track-like muon neutrino events arriving from the direction of the candidate relativistic tidal disruption event AT2022cmc/ZTF22aaajecpc (ATel #15232) which was originally identified as a fast red transient by ZTF (https://www.wis-tns.org/object/2022cmc).
The search was performed using a time window approximately twelve days in duration, beginning at the time of the first ZTF detection (2022-02-11 10:42:40.32 UTC to 2022-02-23 23:00:00.00 UTC), during which IceCube was collecting good quality data.
We find that the data are consistent with atmospheric background expectations, with a p-value of 1. We accordingly derive a time-integrated muon-neutrino flux upper limit for this source of E^2 dN/ dE = 5.7 x 10^-5 TeV cm^-2 at 90% CL, under the assumption of an E^-2 power law. 90% of events IceCube would detect from a source at this declination with an E^-2 spectrum have energies in the approximate energy range between 700 GeV and 500 TeV.
The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.
