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Information on the observation and analysis of stars and other objects that are sources of x-rays and gamma rays.

 66 299 By Bikeman 1 day 23 hours ago

Kilonova Catcher Project by GRANDMA

Bikeman
Affiliation
American Association of Variable Star Observers (AAVSO)
Bikeman Sat, 02/13/2021 - 22:59
Forums
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.

 

Welcome to the High Energy Network

daveh
Affiliation
American Association of Variable Star Observers (AAVSO)
daveh Tue, 02/25/2020 - 17:48
Forums
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).

GRB 240809A : Bright suspected GRB optical counterpart

Bikeman
Affiliation
American Association of Variable Star Observers (AAVSO)
Bikeman Fri, 08/09/2024 - 09:43
Forums
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

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

Bikeman
Affiliation
American Association of Variable Star Observers (AAVSO)
Bikeman Sat, 07/13/2024 - 12:57
Forums
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

HB

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
Forums
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/

Blazar B2 1420+32, QSO B1420+326, OQ 334 is in eruption at about 14.7 mag

Bikeman
Affiliation
American Association of Variable Star Observers (AAVSO)
Bikeman Mon, 07/01/2024 - 14:00
Forums
High Energy Network (HEN)

This is a nice target! There will probably be an AAVSO alert about this soonish, but I'd suggest to observe this one ASAP.

Some info:

ATEL: https://www.astronomerstelegram.org/?read=16681 "A strong optical flaring from the Seyfert 1 Galaxy OQ 334 (B2 1420+326)"

SIMBAD: https://simbad.cds.unistra.fr/simbad/sim-basic?Ident=QSO+B1420%2B326&submit=SIMBAD+search

Clear Skies!

HB

 

Section Spotlight: Spectroscopy, HEN & PEP

tlyster
Affiliation
American Association of Variable Star Observers (AAVSO)
tlyster Wed, 06/26/2024 - 15:14
Forums
High Energy Network (HEN)

You are invited to a one-hour webinar on June 29 featuring brief talks from three AAVSO Sections:

  • Spectroscopy
  • High Energy Network
  • Photoelectric Photometry

We’ll also discuss the AAVSO's Section system, and ways to get involved.

Registration and additional information here.

HEN NEWS 04/2024 (The one with multi-messenger astrology in it)

Bikeman
Affiliation
American Association of Variable Star Observers (AAVSO)
Bikeman Fri, 05/10/2024 - 19:39
Forums
High Energy Network (HEN)

I’d like to look back on April and highlight some things that might be of interest for HEN members. So let’s start with April 1st, Fools Day. There were some hilarious papers posted on arxiv, here are just a few examples:

1) Multi-Messenger Astrology : https://arxiv.org/abs/2403.19749

Yeah, why be limited to observations in the visual spectrum for astrology if we have so many more wavelengths to observe today. Makes perfect nonsense :-)

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