Subj : Daily APOD Report To : All From : Ben Ritchey Date : Tue Mar 05 2019 08:47:20 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. 2019 March 5 [2] X-Ray Superbubbles in Galaxy NGC 3079 Image Credit: X-ray: NASA [3] , CXC [4] , U. Michigan [5] , J-T Li [6] et al. [7] ; Optical: NASA [8] , STScI [9] Explanation: What created these huge galactic superbubbles? Two of these unusual bubbles [10] , each spanning thousands of light-years [11] , were recently discovered near the center of spiral galaxy NGC 3079 [12] . The superbubbles [13] , shown in purple on the image right, are so hot they emit X-rays detected by NASA [14] 's Earth-orbiting Chandra X-Ray Observatory [15] .. Since the bubbles straddle the center of NGC 3079, a leading hypothesis [16] is that they were somehow created by the interaction of the central supermassive black hole [17] with surrounding gas. Alternatively, the superbubbles [18] might have been created primarily by the energetic winds [19] from many young and hot stars near that galaxy's center. The only similar known phenomenon is the gamma-ray emitting Fermi bubbles [20] emanating from the center of our Milky Way Galaxy, discovered 10 years ago [21] in images taken by NASA's Fermi satellite [22] . Research into the nature of the NGC 3079 [23] superbubbles will surely continue, as well as searches for high-energy superbubbles in other galaxies. Tomorrow's picture: strangely spotless sun ------------------------------------------------------------------------------- < [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] image/1903/ngc3079Superbubbles_chandra_1080.jpg [3] https://www.nasa.gov [4] http://cxc.harvard.edu/ [5] https://lsa.umich.edu/astro [6] https://lsa.umich.edu/astro/people/research-scientists-and-postdocs/ jiangtal.html [7] http://adsabs.harvard.edu/abs/2019arXiv190110536L [8] https://www.nasa.gov/ [9] http://www.stsci.edu/ [10] http://chandra.si.edu/photo/2019/ngc3079/ [11] https://www.grc.nasa.gov/www/k-12/Numbers/Math/Mathematical_Thinking/ how_long_is_a_light_year.htm [12] https://en.wikipedia.org/wiki/NGC_3079 [13] https://www.youtube.com/watch?v=hkgOh5jw3fg [14] https://www.nasa.gov [15] http://chandra.harvard.edu/about/ [16] http://adsabs.harvard.edu/abs/2019arXiv190110536L [17] http://astronomy.swin.edu.au/cosmos/s/supermassive+black+hole [18] ap170625.html [19] https://en.wikipedia.org/wiki/Stellar_wind [20] ap101110.html [21] https://www.youtube.com/watch?v=sXmPxSP225Y [22] https://en.wikipedia.org/wiki/Fermi_Gamma-ray_Space_Telescope [23] ap041016.html [24] ap190304.html [25] archivepix.html [26] lib/apsubmit2015.html [27] lib/aptree.html [28] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search [29] calendar/allyears.html [30] /apod.rss [31] lib/edlinks.html [32] lib/about_apod.html [33] http://asterisk.apod.com/discuss_apod.php?date=190305 [34] ap190306.html [35] http://www.phy.mtu.edu/faculty/Nemiroff.html [36] http://www.phy.mtu.edu/ [37] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html [38] http://www.astro.umd.edu/ [39] lib/about_apod.html#srapply [40] https://www.nasa.gov/about/highlights/HP_Privacy.html [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 A43 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .