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 |
|
||||||
From | To | Subject | Date/Time | |||
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) |
||||||
|
Previous Message | Next Message | Back to Earth & Space Sci-Tech + NASA... <-- <--- | Return to Home Page |
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. |