Detail View: NASA Astronomy Picture of the Day Collection: The Large and Small of M87

Title: 
The Large and Small of M87
Explanation: 
The small core of elliptical galaxy M87 [ http://antwrp.gsfc.nasa.gov/apod/ap950913.html ] appears to be energizing its whole galactic neighborhood. Recent images [ http://www.nrao.edu/pr/m87big.html ] from the Very Large Array [ http://antwrp.gsfc.nasa.gov/apod/ap970727.html ] (VLA) of radio telescopes [ http://www.nro.nao.ac.jp/~kotaro/RTs/rts.html ] indicate that huge bubbles of hot gas not only exist but are still being created. These bubbles measure 200,000 light-years across and surround the entire galaxy [ http://www.nrao.edu/~fowen/M87.html ]. The source creating and feeding the bubbles has been traced to jets [ http://www.jb.man.ac.uk/merlin/about/layman/jet.html ] pointing back to M87's center [ http://antwrp.gsfc.nasa.gov/apod/ap970405.html ], where a supermassive black hole [ http://antwrp.gsfc.nasa.gov/apod/ap970114.html ] is thought to live. The smallest scale on the above radio-map [ http://www.nrao.edu/~fowen/M87_halo.html ] is 0.2 light-years and imaged by many radio telescopes working together (VLBI [ http://www.jb.man.ac.uk/merlin/about/layman/vlbi.html ]). The labeled numbers refer to the wavelength of the radio waves observed. The exact composition of these jets is not known [ http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1993MNRAS.264..228C&db_key=AST&high=34f6e1de7f07509 ], but thought to contain various subatomic particles [ http://pdg.lbl.gov/cpep/adventure_home.html ].
Credit and Copyright: 
F. N. Owen (NRAO [ http://www.nrao.edu/Socorro.shtml ]) et al., VLA [ http://www.nrao.edu/vla/html/VLAhome.shtml ], NRAO [ http://www.nrao.edu/ ], AUI [ http://www.aui.edu/ ]
keyword: 
M87
facet_where: 
Goddard Space Flight Center (GSFC)
facet_what: 
VLA
original url: 
http://antwrp.gsfc.nasa.gov/apod/ap990216.html
UID: 
SPD-APOD-ap990216