Wednesday, June 16, 2021
11:00am to 12:00pm
Add to Cal
A Tidal Disruption Event Coincident with a High-Energy Neutrino

IceCube discovered a diffuse flux of high-energy neutrinos in 2013, and recently identified the flaring gamma-ray blazar TXS 0506+056 as a likely neutrino source. However, a combined analysis of the entire resolved gamma-ray blazar population limited the contribution of such objects to no more than 27% of the total neutrino flux, leaving the vast majority of the neutrino flux unexplained. I will present the identification of a second probable neutrino source, the Tidal Disruption Event (TDE) AT2019dsg, found as part of a systematic search for optical counterparts to high-energy neutrinos using the Zwicky Transient Facility. The probability of finding such a TDE with our follow-up program by chance is just 0.2%. Multi-wavelength observations reveal the presence of a central engine powering particle acceleration in AT2019dsg, and confirm that this object can satisfy necessary conditions for PeV neutrino production.

Evan Hall is inviting you to a scheduled Zoom meeting.

Time: Jun 16, 2021 14:00 Eastern Time (US and Canada)
Jun 16, 2021 14:00
Please download and import the following iCalendar (.ics) files to your calendar system.
Weekly: https://mit.zoom.us/meeting/tJ0uc-ivqDMsHdMi4siUhnipYmd7_H2yZ0km/ics?icsToken=98tyKuChrT8rHdKdth6ARox5A4-gd-3wplxdgqdwlUv2ChVbbArmD-9GZY1XQsHq

Join Zoom Meeting

Password: Gmunu

One tap mobile
+16465588656,,99341768677# US (New York)
+16699006833,,99341768677# US (San Jose)

Meeting ID: 993 4176 8677

US : +1 646 558 8656 or +1 669 900 6833

International Numbers: https://mit.zoom.us/u/adhLqi89FI

Join by SIP

Join by Skype for Business