Notices
Results 1 to 1 of 1

Thread: Planets that are similar to Earth that have been hit by a Gamma Ray Burst.

  1. #1 Planets that are similar to Earth that have been hit by a Gamma Ray Burst. 
    Forum Ph.D.
    Join Date
    Jan 2013
    Posts
    917
    GRB: Gamma Ray Burst

    May I kindly have a list of planets that are similar to Earth (relative to size/composition), which have known to have been hit by X?

    X: an instance of a hypothetical GRB that has a high enough energy concentration that would send the human race to extinction with almost a 100% probability within several decades from impact if it hit Earth?


    Quote Originally Posted by jocular View Post
    If thy right nipple offend thee, pluck it off! Goes for the other, too!
    Reply With Quote  
     

  2.  
     

  3. #2  
    exchemist
    Join Date
    May 2013
    Location
    London
    Posts
    2,873
    Quote Originally Posted by RamenNoodles View Post
    GRB: Gamma Ray Burst

    May I kindly have a list of planets that are similar to Earth (relative to size/composition), which have known to have been hit by X?

    X: an instance of a hypothetical GRB that has a high enough energy concentration that would send the human race to extinction with almost a 100% probability within several decades from impact if it hit Earth?
    This is not in fact a predicted effect from a GRB pointing towards the Earth from nearby. I quote from this Wiki article:https://en.wikipedia.org/wiki/Gamma-ray_burst

    All in all, a GRB within a few parsecs, with its energy directed towards Earth, will mostly damage life by raising the UV levels during the burst itself and for a few years thereafter. Models show that the destructive effects of this increase can cause up to 16 times the normal levels of DNA damage. It has proved difficult to assess a reliable evaluation of the consequences of this on the terrestrial ecosystem, because of the uncertainty in biological field and laboratory data.

    So it would do some damage but it does not seem to provide a basis for talking in terms of certain extinction of the human race.


    Reply With Quote  
     

  4. #3  
    Moderator Moderator Janus's Avatar
    Join Date
    Jun 2007
    Posts
    2,098
    Quote Originally Posted by RamenNoodles View Post
    GRB: Gamma Ray Burst

    May I kindly have a list of planets that are similar to Earth (relative to size/composition), which have known to have been hit by X?

    X: an instance of a hypothetical GRB that has a high enough energy concentration that would send the human race to extinction with almost a 100% probability within several decades from impact if it hit Earth?
    No such list exists. Since to date, all known GRBs have occurred in galaxies other than the Milky way, and we have no way to detect planets in other galaxies, there would be no data set from which to create such a list.
    "Men are apt to mistake the strength of their feelings for the strength of their argument.
    The heated mind resents the chill touch & relentless scrutiny of logic"-W.E. Gladstone


    Edit/Delete Message
    Reply With Quote  
     

  5. #4  
    Forum Ph.D.
    Join Date
    Jan 2013
    Posts
    917
    Quote Originally Posted by Wikipedia
    All in all, a GRB within a few parsecs, with its energy directed towards Earth, will mostly damage life by raising the UV levels during the burst itself and for a few years thereafter. Models show that the destructive effects of this increase can cause up to 16 times the normal levels of DNA damage.
    If all the energy (of the GRB described in the above quote) was converted to matter, roughly how much mass would it be expected to have?
    Quote Originally Posted by jocular View Post
    If thy right nipple offend thee, pluck it off! Goes for the other, too!
    Reply With Quote  
     

Similar Threads

  1. do we know if the earth has ever been hit by a gamma ray burst
    By filix in forum Astronomy & Cosmology
    Replies: 7
    Last Post: February 7th, 2012, 07:20 AM
  2. Gamma ray astronomy
    By emetzner in forum Astronomy & Cosmology
    Replies: 1
    Last Post: May 31st, 2009, 03:07 PM
  3. Gamma Ray Bursters
    By Cosmo in forum Personal Theories & Alternative Ideas
    Replies: 3
    Last Post: October 8th, 2008, 08:21 AM
  4. Gamma ray bursts
    By REV ROSWELL in forum Astronomy & Cosmology
    Replies: 1
    Last Post: August 16th, 2006, 04:36 AM
  5. Gamma Ray Bursts
    By redrum4196 in forum Astronomy & Cosmology
    Replies: 2
    Last Post: July 28th, 2006, 03:11 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •