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Supernova in M82

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#1 acr_astro

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Posted 22 January 2014 - 08:28 AM

Hi,

last night, a new possible supernova in M82 has been observed. Currently it has already a brightness of 11.7mag.

http://www.cbat.eps....14 6940260.html

"2014 01 22.3955
L. Elenin (Lyubertsy, Russia) and I. Molotov (Moscow, Russia) confirm an apparent supernova PSN J09554214+6940260 in M82. Object visible on 4 (BVRI) images remotely taken at ISON-NM Observatory (Mayhill, NM, USA) with 0.4-m f/3 telescope + CCD (KAF09000) on Jan. 22.3955, 2014. Object located at 09h 55m 42s.15 +/- 0".13, +69d 40' 25".8 +/- 0".11 (UCAC-4) with magnitudes 12.91B (22.3955); 11.72V (22.4101); 11.31R (22.4061); 11.33I (22.4066). Nothing is visible at this position on the archive POSS and POSSII images. Image of PSN J09554214+6940260 available at http://spaceobs.org/...60-20140122.png"


Further info as well here: PSN J09554214+6940260

Achim

#2 LivingNDixie

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Posted 22 January 2014 - 09:02 AM

That seems pretty bright. Hope this turns out to be true.

#3 geminijk

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Posted 22 January 2014 - 09:23 AM

How cool is this. I just might have imaged this SN on Sunday during the live Virtual Star Party on Sunday night.

John

#4 MikeBOKC

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Posted 22 January 2014 - 09:24 AM

This could be a good one . . . M82 is right next door at 12 million LY. Might be reaching peak brightness this weekend as well . . . already scheduling a trip to the club dark site!

#5 MikeBOKC

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Posted 22 January 2014 - 10:21 AM

According to everything on line so far the discovery images were all taken on Monday. If so you could be the actual discoverer. You might want to contact the Harvard folks with your image to see if they will credit you with it!

#6 Darren Drake

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Posted 22 January 2014 - 10:32 AM

I wonder if any of the neutrino detectors were able to detect anything. Should be interesting to look into.

#7 acr_astro

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Posted 22 January 2014 - 10:33 AM

Hi John,

that is amazing news!

Achim

#8 IVM

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Posted 22 January 2014 - 10:41 AM

Bright one, and in a well-positioned Messier no less, in time for the season! And John, do let the pros know of your observation. Even if you are not recognized as the discoverer your "pre-discovery observation" must be of great interest.

#9 IVM

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Posted 22 January 2014 - 10:49 AM

Here is what appears to be a series of "pre-discovery" observations - this guy (in retrospect, I believe) traced it to how it was brightening from mag. 14.4 on January 15:

http://www.k-itagaki.jp/psn-m82.jpg

And no wonder the position seemed familiar to me - as it not infrequently happens, this supernova arose from a compact star cloud, in this case the one that contributes to the visually sharp NW corner of the central large bright region in this galaxy. (My last observation from 2012 is here:

http://idle-stargaze...ers-in-m82.html

#10 MikeBOKC

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Posted 22 January 2014 - 11:25 AM

Word is this is a Type 1a which originates with a white dwarf accreting matter from a binary companion. I am not sure what the usual brightening curve or lifetime would be, so if anyone knows please post.

#11 dgg99

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Posted 22 January 2014 - 11:51 AM

Being a type Ia SN in such a nearby galaxy (11.5 Mly), I guess it has the potential to be very bright. If it is a "normal" Ia supernova it could be significantly brighter than SN 2011fe in M101, but the ATEL report says it is somewhat obscured by dust. They also say that the SN is ~12 days before maximum.

The SN is already bright at 11.5 mag, should be visible with any telescope!

It is surprising that it went undiscovered for a week...

#12 MikeBOKC

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Posted 22 January 2014 - 12:01 PM

There is speculation now that it could go to mag 8, putting it in binocular range. How many tens of thousands of scopes will be aimed at M82 this weekend?

#13 IVM

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Posted 22 January 2014 - 12:16 PM

My estimate is a couple hundred ;)

EDIT: I would love to add to the count myself but can't - clouds, clouds, clouds.

EDIT 2: The above estimate pertains to this planet only. Mike probably meant the universe, so no argument between us.

#14 tigerroach

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Posted 22 January 2014 - 12:54 PM

This is great news. Now for some clear skies...

#15 Khyron

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Posted 22 January 2014 - 12:56 PM

I wonder if any of the neutrino detectors were able to detect anything. Should be interesting to look into.


For what it's worth:

"While the explosion undoubtedly produced neutrinos, the distance is great enough that any arriving at Earth-based neutrino detectors will likely be swamped by other sources. However, the relative closeness of M82 means that a variety of telescopes, both ground- and space-based, will be able to monitor its evolution over the next few days as the explosion fades. The data will help astronomers distinguish whether it truly is a type Ia (the galaxy it's in makes a core-collapse supernova more probable, but doesn't rule out white dwarfs), and possibly even tell whether one or two white dwarfs were involved." - ArsTechnica

#16 Jmax

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Posted 22 January 2014 - 12:59 PM

I took 20 minutes of exposure on M81/82 on Monday night, as well. I still haven't processed anything or even looked, so I can't wait to get home and see if I got it! If I did, I'll post my picture later tonight.

#17 acr_astro

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Posted 22 January 2014 - 01:30 PM

Hi all,

just coming in from the backyard. I observed it with the 10" f/5 Dobsonian! Really easy to find when you follow the line built by the two mag 10 stars near the Center. Best view was at 125x using the 10mm Celestron X-cel. :D

I did not estimate the brightness in detail, leaving this for stargazers taking Images. Definitely dimmer than the two "guiding stars".

CS!

Achim

#18 Telescopic

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Posted 22 January 2014 - 02:45 PM

Cool Stuff, next clear night I will look for it!

#19 Americal

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Posted 22 January 2014 - 03:57 PM

Already had a 2 night trip to my dark sky desert site planned for Thurs and Fri nights. Will def try to sketch M82 both nights. My luck/timing doesn't usually work this good, it'll probably cloud up. :bawling: Woohoo.

#20 geminijk

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Posted 22 January 2014 - 05:18 PM

Here is a link to actual VSP video.
http://www.youtube.c...0&feature=share

And here is a snag of just the M82 and the SN.

Attached Files



#21 nytecam

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Posted 22 January 2014 - 05:32 PM

Here is a link to actual VSP video.
http://www.youtube.c...0&feature=shareAnd here is a snag of just the M82 and the SN.

Great image John - all I need is a clear sky :bawling:

Ten days ago a SN found in nearby NGC 3448 - see chart - it's amazing to think its light passed by M82 some 12M years ago and light from both events arrived on earth at nearly the same time after all those eons :)

Attached Files



#22 Saint Aardvark

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Posted 22 January 2014 - 06:06 PM

There's an amazing picture on Twitter from someone who was able to capture an image with a 66mm refractor:

https://twitter.com/...4481920/photo/1

#23 IVM

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Posted 22 January 2014 - 06:09 PM

Interesting thought, Maurice.

#24 itfrightensme

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Posted 22 January 2014 - 06:14 PM

I imaged this on the 19th and didn't even notice, thought it was a milky way star!

http://imgur.com/jJWUxqJ

#25 jeff heck

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Posted 22 January 2014 - 06:16 PM

Wow! I observed this SN at 8:30pm on Sunday night 1-19-2014 at a green dark site. I did not recall a star there on M82 and had a fellow observer take a look. He texted me later that night and said it was a field star. Very cool! :coolnod:






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