SNs vs GRBs

[pcaspa]

I've come across something I'm hoping someone can help me clarify. I've been studying GRB's and I've loaded a list of GRBs and SN's into a database and matched them up by RA/Dec to check out the link between the two. I thought this might provide a good potential target list for a SN search. I found a link between SN 2002AP and GRB 980425A. Nearly 4 years apart.

I've googled and found no documentation suggesting a link between these 2 events. The link below says: 'It was suspected that this object could be accompanied by a Gamma Ray Burst ' I assume because for the type of SN.


http://www.seds.org/messier/more/m074_sn2002ap.html


I know that the link between GRB's and SN's is understood (at least partially) but nothing I've read suggests a 4 year difference is expected. Would this not suggests that GRB's make a great target list for SN hunting? Or is this already common knowledge?

Any thoughts anyone?

Peter

[astroron (Ron)]

I think that the scercety(spelling?)of GRB's and when they are discovered the Swift and other telescopes all go looking for the galaxy that it originated from.
Most of the GRB'S are thought to come from galaxies in the billions of light years away.M74 seems to be the exception.
Ron

[pcaspa]

I think my last post was a bit cryptic. I’ll try to clarify what I’m on about.

From some data mining I’ve found that GRB 980425A occurred at the same point in the sky (M74) as SN 2002AP almost 4 years later. Are these two events linked to the same star? A coincidence seems unlikely so I’m going to proceed on the assumption that there is a link.

I’ve found no documentation connecting these 2 events. Is the astronomical community aware of a lead time of nearly 4 years from a GRB to a SN or have I stumbled onto something new?

This seems like something that would interest SN hunters.

SN: 2002ap
RA: 01 36 23.85
Dec: +15 45 13.2
Date: 2002 01 29

GRB: 980425A
RA: +01:36:23.92
Dec: +15:45:12.87
Date: 1998 04 25

[Zuts]

Originally Posted by pcaspa

I think my last post was a bit cryptic. I’ll try to clarify what I’m on about.

From some data mining I’ve found that GRB 980425A occurred at the same point in the sky (M74) as SN 2002AP almost 4 years later. Are these two events linked to the same star? A coincidence seems unlikely so I’m going to proceed on the assumption that there is a link.

I’ve found no documentation connecting these 2 events. Is the astronomical community aware of a lead time of nearly 4 years from a GRB to a SN or have I stumbled onto something new?

This seems like something that would interest SN hunters.

SN: 2002ap
RA: 01 36 23.85
Dec: +15 45 13.2
Date: 2002 01 29

GRB: 980425A
RA: +01:36:23.92
Dec: +15:45:12.87
Date: 1998 04 25

Maybe, but a sample of one ..........

Paul

[renormalised (Carl)]

Originally Posted by pcaspa

I think my last post was a bit cryptic. I’ll try to clarify what I’m on about.

From some data mining I’ve found that GRB 980425A occurred at the same point in the sky (M74) as SN 2002AP almost 4 years later. Are these two events linked to the same star? A coincidence seems unlikely so I’m going to proceed on the assumption that there is a link.

I’ve found no documentation connecting these 2 events. Is the astronomical community aware of a lead time of nearly 4 years from a GRB to a SN or have I stumbled onto something new?

This seems like something that would interest SN hunters.

SN: 2002ap
RA: 01 36 23.85
Dec: +15 45 13.2
Date: 2002 01 29

GRB: 980425A
RA: +01:36:23.92
Dec: +15:45:12.87
Date: 1998 04 25

I'll have to go through the literature, but from what I've read before I can't recall a four year gap between a GRB and any associated SN. Applying Occam's Razor, I would have to say they're not the same event, but you can never discount the Universe. It tends to throw curly ones every now and then

Just because something occurs in the same galaxy twice, doesn't make them related. I'd say the GRB was a consequence of a pair-instability Hypernova rather than a run of the mill SN. Though, I'd have to have a copy of the light curves of both events to figure it out.

[pcaspa]

Originally Posted by Zuts

Maybe, but a sample of one ..........

Paul

GRB leading SN have happened a number of times, 7 that I've found, but by no more than a few weeks. I'm curious about this event as the difference is in years. While its possibly a coincidence it seems unlikely within 1".

Peter

[astroron (Ron)]

Do you no if there are not supernova searchers doing what you are asking.
A lot of researchers do not flag their search methods.
As I said in my first post GRB's are usually so distant that they would only be in the realm of the larger telescopes and dedicated S/N searches with the Hubble telescope.
Ron

[pcaspa]

I've found some references that link these events, looks like I've reinvented the wheel.

http://gcn.gsfc.nasa.gov/gcn3/1252.gcn3

http://gcn.gsfc.nasa.gov/gcn3/1237.gcn3

Also some other responses

http://www.bautforum.com/questions-a...s-vs-grbs.html

Thanks