Jump to content




Welcome to Unexplained Mysteries! Please sign in or create an account to start posting and to access a host of extra features.


- - - - -

Rare star-to-supernova link established


  • Please log in to reply
3 replies to this topic

#1    thefinalfrontier

thefinalfrontier

    Majestic 12 Operative

  • Member
  • 5,586 posts
  • Joined:28 May 2008
  • Gender:Male
  • Location:South Carolina

  • When a chicken hawk is around a wise rooster will not bury its head~ ~ ~ ~ Barney Fife~ ~ ~

Posted 23 March 2009 - 09:42 AM

Rare star-to-supernova link established

A supernova, or stellar explosion, some 200 million light-years away has been traced to its progenitor star, one of only a few times the source of a supernova has been identified based on pre- and post-supernova images.

Astrophysicist Avishay Gal-Yam of the Weizmann Institute of Science in Rehovot, Israel, and astronomer Douglas Leonard of San Diego State University used images from the Hubble Space Telescope to single out the star. In 1997 images, there was a bright light source near where the explosion, dubbed SN 2005gl, was detected in 2005.

In a previous paper Gal-Yam, Leonard and their colleagues had cited this evidence as indicative that the luminous, massive star begat the supernova. But without post-event images, it was not clear that the star had disappeared with the explosion or that the suspect light source had not been a cluster of stars to begin with. Thanks to 2007 Hubble images showing a void where the star (and subsequent supernova) had been, the researchers concluded that the solitary star indeed met its end in supernova SN 2005gl. They report their finding today in Nature.

Until very recently the only other supernova matched to its progenitor star with pre- and post-explosion images was SN 1987A in the nearby Large Magellanic Cloud. Just 168,000 light-years away, supernova SN 1987A was visible to the naked eye when it exploded in its namesake year. Then, in a paper published online by Science last week (that was submitted and accepted for publication after Gal-Yam and Leonard's paper), another pair of researchers identified two progenitor stars that disappeared in supernovae in 1993 and 2003.

Visible, x-ray and infrared image of a supernova remnant courtesy of NASA, ESA, R. Sankrit and W. Blair (Johns Hopkins University)

Source; Scientific American;

http://www.sciam.com/blog/60-second-scienc...abli-2009-03-22






#2    stevewinn

stevewinn

    Government Agent

  • Member
  • 8,560 posts
  • Joined:05 Feb 2007
  • Gender:Male
  • Location:Liverpool, England

  • Victory at all costs, victory in spite of all terror, victory however long and hard the road may be; for without victory, there is no survival

Posted 23 March 2009 - 08:18 PM

good post and nice image.

Posted Image

British by Birth - English by the Grace of God

#3    merril

merril

    Astral Projection

  • Member
  • PipPipPipPipPip
  • 706 posts
  • Joined:16 Feb 2008

Posted 24 March 2009 - 06:01 AM

Yes, an interesting post. Before and after images-

linked-image

linked-image



A good article at Hubble-

Hubble Uncovers an Unusual Stellar Progenitor to a Supernova

linked-image


#4    xCrimsonx

xCrimsonx

    Resident Vamp

  • Member
  • 5,248 posts
  • Joined:31 Mar 2007
  • Gender:Female
  • Location:Australia

  • The Vampire Lair
    http://paranormalborder.net/forum/3002966/
    "All Torque & No Traction"
    "Static - Cold"
    "GF,FO"
    "1"

Posted 24 March 2009 - 06:46 AM

Gorgeous picture, thanks for sharing!   thumbsup.gif


The Paranormal Border
The Vampire Club18+

http://forum.paranor...order.com/index
Posted Image





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users