Affiliation
American Association of Variable Star Observers (AAVSO)
Sun, 07/04/2021 - 15:26
Hello all!
I observed optical afterglow of GRB 210702A on July 3, 2021, remotely at iTelescope T17. My measurements of magnitude: 18.6 i' +/- 0.4 and 19.0 r' +/- 0.5 about 14 hours after the trigger. More information: https://gcn.gsfc.nasa.gov/gcn3/30364.gcn3 (in the GCN circular #30364).
With best regards,
Filipp.
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Hopefully…
Congratulations!
Hopefully we will soon have some AAVSO hosted space to share GRB afterglow observations in a centralized way.
HB
Thanks, I hope so too.
I would also like…
Filipp,
I would also like to congratulate you on your work with GRBs. As HB mentioned, it would be an advantage to have a centralized way to archive and access the data. To my knowledge, there is nothing formal happening at this time toward that end.
But I have an idea. If you would be willing to write up the procedure you use to obtain GRB images (filter type, length of exposure, stacking, etc.) and submit to this forum, we might be able to create a separate "GRB page" on the HEN website. That might be a good start to developing a more comprehensive GRB data base. You would, of course, get full credit for all of your work. Let me know what you think about this.
Dave Hinzel
Hello David!
Thank you for your congratulation to me!
Do you mean site https://www.aavso.org/hen ? I think creating a separate page is good. What do you need from me: a list of my observations of GRB afterglows with full information (filters, times, remote telescopes, links to circulars, photos)? Only positive, or even upper limits?
Or does it need to be done as my experience in the form of a manual?
With best regards,
Filipp.
Thanks for your…
Filipp,
Thanks for your quick response.
Yes, a GRB page would be on the link you indicated. It would probably best fit into the box on the upper right side of the front page (High Energy Network, with the various links indicated) as a clickable link with a title something like "GRB/GRB Afterglow Observational Techniques". The information you mention will be good. Think of this page as information that a beginner in GRB observations would need to be successful. As far as limits, I assume you mean limits or ranges of the various parameters you need for the observations (such as the amount of imaging time you need to observe a GRB of a particular magnitude). Any information will be helpful.
Regarding a manual, I hadn't considered that but it's a great idea. We could fairly easily develop a downloadable PDF manual from your information. It could become one of the Observing Manuals included in the AAVSO database (such as the CCD Photometry Guide).
So once we have your information, we can do both. I will be happy to lead that effort. I can put together all the information you send (just put it on this forum if you like). When I finish, I'll send you a review copy to be sure I got everything correct. The web page creation is typically done by Sara Beck (she worked with me to create the HEN website early last year).
Also, a GRB page/manual will likely be very helpful in the future since I am trying to put together a project with professional astronomers that are very interested in GRB research.
Thanks again,
Dave
Dave,
Thank you, I understand.
You can select this information from the GCN circulars, in which I described my observations in as much detail as possible:
GRB 191029A: iTelescope optical upper limits https://gcn.gsfc.nasa.gov/gcn/gcn3/26091.gcn3
GRB 191123A: iTelescope optical upper limits https://gcn.gsfc.nasa.gov/gcn/gcn3/26283.gcn3
GRB 191221B: iTelescope optical observations https://gcn.gsfc.nasa.gov/gcn/gcn3/26565.gcn3
Stacked image of GRB 191221B: https://pbs.twimg.com/media/EQQ4R_5X0AE51ge?format=jpg
GRB 201223A: iTelescope optical afterglow observations https://gcn.gsfc.nasa.gov/gcn/gcn3/29165.gcn3
GRB 210104A: iTelescope optical upper limit https://gcn.gsfc.nasa.gov/gcn/gcn3/29269.gcn3
GRB 210226A: Burke-Gaffney Observatory optical upper limit https://gcn.gsfc.nasa.gov/gcn/gcn3/29572.gcn3
GRB 210306A: iTelescope optical afterglow observations https://gcn.gsfc.nasa.gov/gcn/gcn3/29599.gcn3
GRB 210610B: iTelescope optical afterglow observations https://gcn.gsfc.nasa.gov/gcn/gcn3/30181.gcn3
GRB 210610B: correction to GCN 30181 https://gcn.gsfc.nasa.gov/gcn/gcn3/30184.gcn3
GRB 210610B: optical observations from Burke-Gaffney Observatory and Abbey Ridge Observatory https://gcn.gsfc.nasa.gov/gcn/gcn3/30228.gcn3
GRB 210619B: iTelescope optical afterglow observation https://gcn.gsfc.nasa.gov/gcn/gcn3/30292.gcn3
GRB 210619B: Abbey Ridge Observatory optical afterglow observation https://gcn.gsfc.nasa.gov/gcn/gcn3/30305.gcn3
GRB 210702A: iTelescope optical afterglow observations https://gcn.gsfc.nasa.gov/gcn3/30364.gcn3
P.S. I do not always have access to the Internet, so I answered you as soon as I saw your message.
This is good…
Thanks Filipp,
This is good! I can get started putting things together.
Dave