Supernova in M82
Posted 22 January 2014 - 08:28 AM
last night, a new possible supernova in M82 has been observed. Currently it has already a brightness of 11.7mag.
"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
Posted 22 January 2014 - 09:02 AM
Posted 22 January 2014 - 09:23 AM
Posted 22 January 2014 - 09:24 AM
Posted 22 January 2014 - 10:21 AM
Posted 22 January 2014 - 10:32 AM
Posted 22 January 2014 - 10:41 AM
Posted 22 January 2014 - 10:49 AM
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:
Posted 22 January 2014 - 11:25 AM
Posted 22 January 2014 - 11:51 AM
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...
Posted 22 January 2014 - 12:01 PM
Posted 22 January 2014 - 12:16 PM
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.
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
Posted 22 January 2014 - 12:59 PM
Posted 22 January 2014 - 01:30 PM
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.
I did not estimate the brightness in detail, leaving this for stargazers taking Images. Definitely dimmer than the two "guiding stars".
Posted 22 January 2014 - 03:57 PM
Posted 22 January 2014 - 05:32 PM
Great image John - all I need is a clear sky
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.
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
Posted 22 January 2014 - 06:16 PM