Contribution to a conference proceedings/Journal Article

PUBDB-2022-04764

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Gamma-ray Follow-up Observations of Dwarf Nova AT2021afpi as a Possible Neutrino Counterpart with the VERITAS Instrument

Kherlakian, M. C. (Corresponding author)DESY* ; VERITAS Collaboration (Collaboration Author)

2022
Inst. of Physics, Jagellonian Univ. Cracow

This record in other databases:    

Please use a persistent id in citations: doi:10.5506/APhysPolBSupp.15.3-A26  doi:10.3204/PUBDB-2022-04764

Abstract: AT2021afpi was a 10 mag outburst seen by the MASTER-Tavrida autodetection system in temporal coincidence with the astrophysical neutrino candidate IC211125A. The object was observed as an optical bright transient, initially classified as a classical nova. Follow-up observations by the VERITAS instrument at gamma-ray energies > 100 GeV on the nova location resulted in no detection for an exposure of 5.5 hours. Further spectroscopic reports reclassified AT2021afpi as a dwarf nova of the type WZ Sge-Type, which are not expected to be neutrino emitters. A possible blazar detected by Fermi-LAT, 4FGL J0248.0+2232, which lies within the 90% localisation region of IC211125A, was observed in a flaring radio state four days after the neutrino alert. A further combined analysis with 1 hour of exposure time on 4FGL J0248.0+2232 at the position of AT2021afpi still resulted in no detection.

Keyword(s): gamma ray ; VERITAS

---

Contributing Institute(s):

1. Cherenkov Telescope Array (ZEU-CTA)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)

Experiment(s):

1. Cherenkov Telescope Array

Appears in the scientific report 2022

---

Database coverage:
; ; ; SCOAP3 sponsored Journal ; SCOPUS

---