High Energy Network (HEN)

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No new posts	High Energy Network (HEN) Information on the observation and analysis of stars and other objects that are sources of x-rays and gamma rays.	67	301	By Bikeman 3 months ago

Kilonova Catcher Project by GRANDMA

Bikeman

Affiliation

American Association of Variable Star Observers (AAVSO)

Bikeman Sat, 02/13/2021 - 22:59

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High Energy Network (HEN)

I'd like to promote the Kilonova-Catcher citizen science project here. This seems to be perfect for collaboration with High Energy Network observers of the AAVSO.

If you haven't watched it already, the second part of this AAVSO webinar

https://youtu.be/WIDxZDA2ZvY "AAVSO Webinar, with Melanie Crowson and Dr. Sarah Antier"

is a perfect introduction into this subject. The second part where Dr Sarah Antier explains this starts at around 39min into the webinar.

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Welcome to the High Energy Network

daveh

Affiliation

American Association of Variable Star Observers (AAVSO)

daveh Tue, 02/25/2020 - 17:48

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High Energy Network (HEN)

Welcome to the AAVSO International High Energy Network Forum and the High Energy Network Observing Section. The AAVSO International High Energy Network is dedicated to the optical monitoring of high energy astrophysical phenomena in the universe. It is an expansion of the AAVSO International Gamma-Ray Burst Network which had great success in discovering and observing the optical afterglows of gamma-ray bursts (GRBs).

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Fresh KilonovaCatcher target: GRB 240821A

Bikeman

Affiliation

American Association of Variable Star Observers (AAVSO)

Bikeman Wed, 08/21/2024 - 20:49

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High Energy Network (HEN)

see https://gcn.nasa.gov/circulars/37220

This is a short gamma ray burst with some special features, which might hint at a kilonova. Please try to observe if possible. Unfortunately it is very close to a very full moon :-(

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GRB 240809A : Bright suspected GRB optical counterpart

Bikeman

Affiliation

American Association of Variable Star Observers (AAVSO)

Bikeman Fri, 08/09/2024 - 09:43

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High Energy Network (HEN)

The GRB 240809A detected by SWIFT seems to have a very bright counterpart (as reported by KilonovaCatchers: r~14.5) (!!!)

GCN Circular here: https://gcn.nasa.gov/circulars/37110

Coordinates: (Derived from optical detection, so it has arcsec precision)

RA(J2000) = 15:50:10.51 = 237.54381

DEC(J2000) = -02:19:03.2 = -2.31756

Observations in V , R or (even better Sloan filters g and r) are preferred.

CS & Good luck

HBE

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Webinar on SNEWS Campaign --- today (2024 07 13)

Bikeman

Affiliation

American Association of Variable Star Observers (AAVSO)

Bikeman Sat, 07/13/2024 - 12:57

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High Energy Network (HEN)

Friendly reminder: There is still time to register for the special Webinar on teh SNEWS Camapaign on potential super nova progenitors in our galaxy:

https://us02web.zoom.us/webinar/register/9717153550650/WN_XUKEVPkDTayf2l9A8qmZ2Q#/registration

Cheers

Read more about Webinar on SNEWS Campaign --- today (2024 07 13)

HEN NEWS 05/2024 (The one with E.T. in it)

Bikeman

Affiliation

American Association of Variable Star Observers (AAVSO)

Bikeman Thu, 07/11/2024 - 18:34

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High Energy Network (HEN)

There are good news to report from the LIGO-VIRGO-KAGRA collaboration of mojor gravitational wave (GW) detectors: The universe will be given more time to thow an interesting GW event (hopefully with an optical counterpart accessible to amateurs!) at us, as the current observation run will be extended.

The new planned end-date for the "O4" run now is 9 June 2025, originally it was planned to end O4 in January 2025.

https://observing.docs.ligo.org/plan/