Next meeting: 8th of April:
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This is a REMINDER for our WEBINAR on Tuesday, April 8th at 1700 UTC/1900 FR!
NOTE THE NEW TIMES!!!
Date: Tuesday, April 8th
Time:
12:00 PM CDT / 1:00 PM EST / 7:00 PM FR Time / 5:00 PM UTC
1200h CDT/ 1300h EST / 1900h FR / 1700h UTC
Zoom Link: https://umn.zoom.us/j/8068498577
Guest Speaker:
We’re excited to welcome Dr. Marion Pillas, a postdoctoral fellow at Liege University in Belgium. Dr. Pillas is also the chair for GRANDMA’s GRB Working Group and has written the GRB observing strategy for the collaboration.
She will be presenting on her research and on her paper:
“Limits on the Ejecta Mass During the Search for Kilonovae Associated with Neutron Star-Black Hole Mergers: A case study of S230518h, GW230529, S230627c and the Low-Significance Candidate S240422ed”
This paper focuses on how neutron star–black hole (NSBH) mergers are expected to produce kilonovae (KNe), but none have been confirmed despite extensive follow-up of four NSBH candidates detected via gravitational waves during O4 (May 2023 – July 2024). This study evaluates why no KN was detected by analyzing multi-messenger observations and the observational coverage from over 50 instruments. Simulations show that most NSBH KNe peak around one day post-merger in g, r, i bands – often outside follow-up coverage. For some candidates, faint KN luminosity, large distances, or poor sky localization significantly limited detectability, and in one case (S240422ed), the lack of a KN supports a non-astrophysical origin.
This is a GRANDMA/KNC paper led by Dr. Pillas and Dr. Antier. It can be found on the KNC forge, here.
This event is just our webinar, so we hope you’ll take the opportunity to join, ask questions, and learn more about cutting-edge research in fast transients and the science community!
Don’t forget to check out our Youtube for past webinar events and monthly meetings!
See you there!
Cristina Andrade
Research Professional | MN Institute for Astrophysics
The Kilonova Catcher Core Team
http://kilonovacatcher.in2p3.fr/
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