AAVSO Alert Notice 505<br /> Monitoring of Northern dwarf novae for radio jets campaign<ins datetime="2014-10-27T13:11:02+00:00"><br /> October 24, 2014</ins> <p>Ms. Deanne Coppejans (PhD candidate, Radboud University Nijmegen (Netherlands) and University of Cape Town)
<p style="text-align: center;"></p> <p>Astronomers using NASA’s Hubble Space Telescope for the first time have spotted a star system that later produced an unusual supernova explosion of a white dwarf, the stripped-down
<p style="text-align:center"><a href="http://hubblesite.org/newscenter/archive/releases/2014/13/image/a/format/web_print/" target="_blank"></a></p> <p>This is a Hubble Space Telescope composite image of a supernova explosion designated SN 2014J in the galaxy M82. At a distance of approximately 11.5 million light-years
AAVSO Alert Notice 476<br /> Multicolor photometry of triple system b Per requested<br /> January 4, 2013 <p>Dr. Bob Zavala (U.S. Naval Observatory, Flagstaff) has requested AAVSO assistance in obtaining multicolor photometry of
<p>An extraordinary outburst produced by a black hole in a nearby galaxy has provided direct evidence for a population of old, volatile stellar black holes. The discovery, made by astronomers
<p>An international team of scientists using NASA’s Fermi Gamma-ray Space Telescope has discovered a surprisingly powerful millisecond pulsar that challenges existing theories about how these objects form.</p> <p>At the same time,