Message Area
Casually read the BBS message area using an easy to use interface. Messages are categorized exactly like they are on the BBS. You may post new messages or reply to existing messages!

You are not logged in. Login here for full access privileges.

Previous Message | Next Message | Back to Earth & Space Sci-Tech + NASA...  <--  <--- Return to Home Page
   Networked Database  Earth & Space Sci-Tech + NASA...   [472 / 862] RSS
 From   To   Subject   Date/Time 
Message   Ben Ritchey    All   Daily APOD Report   December 3, 2018
 8:33 AM *  

                         Astronomy Picture of the Day

                         Astronomy Picture of the Day

    Discover the cosmos! [1] Each day a different image or photograph of our
 fascinating universe is featured, along with a brief explanation written by a
                           professional astronomer.

                                2018 December 3
                      Spiraling Supermassive Black Holes
Video Credit: NASA [2] 's Goddard Space Flight Center [3] ; Music: In the Hall
                of the Mountain King [4]  by Edvard Grieg [5]

Explanation: Do black holes glow when they collide? When merging, co-orbiting
black holes [6]  are sure to emit a burst of unusual gravitational radiation
[7] , but will they emit light [8] , well before that, if they are surrounded
by gas [9] ? To help find out, astrophysicists [10]  created a sophisticated
computer [11]  simulation. The simulation [12]  and featured resulting video
[13]  accurately depicts two spiraling supermassive black hole [14] s,
including the effects of Einstein's general relativity [15]  on the
surrounding gas and light. The video [16] first shows the system from the top,
and later from the side where unusual gravitational lens distortions [17]  are
more prominent. Numerical results [18]  indicate that gravitational and
magnetic forces should energize the gas to emit high-energy light from the
ultraviolet [19] to the X-ray [20] . The emission of such light may enable
humanity to detect and study [21]  supermassive black hole pair [22] s well
before they spiral together.

Open Science: Browse 1,800+ codes in the Astrophysics Source Code Library [23]

                      Tomorrow's picture: launch streak

-------------------------------------------------------------------------------
< [24] | Archive [25] | Submissions [26] | Index [27] | Search [28] | Calendar
  [29] | RSS [30] | Education [31] | About APOD [32] | Discuss [33] | > [34]
-------------------------------------------------------------------------------

    Authors & editors: Robert Nemiroff [35] (MTU [36] ) & Jerry Bonnell [37]
                                  (UMCP [38] )
          NASA Official:  Phillip Newman Specific rights apply [39] .
              NASA Web Privacy Policy and Important Notices [40]
              A service of: ASD [41]  at NASA [42]  / GSFC [43]
                           & Michigan Tech. U. [44]
----------
Site notes:
  [1] archivepix.html
  [2] https://www.nasa.gov/
  [3] https://www.nasa.gov/goddard
  [4] https://en.wikipedia.org/wiki/In_the_Hall_of_...
  [5] https://en.wikipedia.org/wiki/Edvard_Grieg
  [6] https://science.nasa.gov/astrophysics/focus-a...
  [7] ap160211.html
  [8] https://science.nasa.gov/ems/01_intro
  [9] https://en.wikipedia.org/wiki/Accretion_disk
  [10] http://iopscience.iop.org/article/10.3847/153...
  [11] https://www.oxfamblogs.org/fp2p/wp-content/up...
  [12]
https://www.nasa.gov/feature/goddard/2018/
new-simulation-sheds-light-on-spiraling-supermassive-black-holes
  [13] image/1812/SmbhSimulation_NasaGsfc_annotated.mp4
  [14] http://astronomy.swin.edu.au/cosmos/s/superma...
  [15] https://en.wikipedia.org/wiki/General_relativ...
  [16] https://svs.gsfc.nasa.gov/13043
  [17] https://apod.nasa.gov/htmltest/rjn_bht.html
  [18] http://iopscience.iop.org/article/10.3847/153...
  [19] https://science.nasa.gov/ems/10_ultravioletwa...
  [20] http://chandra.harvard.edu/xray_astro/xrays.h...
  [21] ap171016.html
  [22] ap160212.html
  [23] http://ascl.net/code/all
  [24] ap181202.html
  [25] archivepix.html
  [26] lib/apsubmit2015.html
  [27] lib/aptree.html
  [28] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apo...
  [29] calendar/allyears.html
  [30] /apod.rss
  [31] lib/edlinks.html
  [32] lib/about_apod.html
  [33] http://asterisk.apod.com/discuss_apod.php?dat...
  [34] ap181204.html
  [35] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [36] http://www.phy.mtu.edu/
  [37] https://antwrp.gsfc.nasa.gov/htmltest/jbonnel...
  [38] http://www.astro.umd.edu/
  [39] lib/about_apod.html#srapply
  [40] https://www.nasa.gov/about/highlights/HP_Priv...
  [41] https://astrophysics.gsfc.nasa.gov/
  [42] https://www.nasa.gov/
  [43] https://www.nasa.gov/centers/goddard/
  [44] http://www.mtu.edu/

--- Mystic BBS v1.12 A39 (Windows/32)
 * Origin: FIDONet - The Positronium Repository (1:393/68)
  Show ANSI Codes | Hide BBCodes | Show Color Codes | Hide Encoding | Hide HTML Tags | Show Routing
Previous Message | Next Message | Back to Earth & Space Sci-Tech + NASA...  <--  <--- Return to Home Page

VADV-PHP
Execution Time: 0.111 seconds

If you experience any problems with this website or need help, contact the webmaster.
VADV-PHP Copyright © 2002-2024 Steve Winn, Aspect Technologies. All Rights Reserved.
Virtual Advanced Copyright © 1995-1997 Roland De Graaf.
v2.0.140505

Warning: Unknown: open(c:\Sessions\sess_8oj7imu16at9kp9r1l96elcds5, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (c:\Sessions) in Unknown on line 0 PHP Warning: session_start(): open(c:\Sessions\sess_8oj7imu16at9kp9r1l96elcds5, O_RDWR) failed: No such file or directory (2) in D:\wc5\http\public\VADV\include\common.inc.php on line 45 PHP Warning: Unknown: open(c:\Sessions\sess_8oj7imu16at9kp9r1l96elcds5, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 PHP Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (c:\Sessions) in Unknown on line 0