okt 182013
 
Heaviest Black Holes Grown Up in Galactic Cities

  A research team, led by a researcher at the National Astronomical Observatory of Japan (NAOJ), discovered that the heaviest black holes tend to be located in galactic environments with higher density. This finding indicates that galaxies in a dense area often merge together, causing the growth of supermassive black holes. An artist’s illustration of galaxy distribution, [continue reading]

okt 142012
 
Anne's Picture of the Day: Circinus Galaxy

October 14, 2012 Circinus Galaxy, an active spiral galaxy in Circinus Image Credit: Andrew S. Wilson (U. Maryland) et al., WFPC2, HST, NASA Circinus Galaxy (ESO 97-G13), is an active spiral galaxy (Type Seyfert II), located about 13 million light-years away in the Circinus constellation, just below the Galactic plane. The Circinus Galaxy is one [continue reading]

aug 272012
 
A Supernova in NGC 5806 Spotted

  A new image from the NASA/ESA Hubble Space Telescope shows NGC 5806, a spiral galaxy in the constellation Virgo (the Virgin). It lies around 80 million light years from Earth. Also visible in this image is a supernova explosion called SN 2004dg. NGC 5806, a spiral galaxy in the constellation Virgo (the Virgin). Also [continue reading]

aug 112012
 
Hidden Galactic Nuclei

  At the core of most galaxies including our own Milky Way is a supermassive black hole. Material falling into the environment of the black hole heats up, and can radiate dramatically, sometimes also powering the ejection of bipolar jets of rapidly moving charged particles. These so-called active galactic nuclei (AGN) are observed to have [continue reading]

jul 282012
 
Largest Ever Cherenkov Telescope Sees First Light

  On 26 July 2012, the H.E.S.S. II telescope started operation in Namibia. Dedicated to observing the most violent and extreme phenomena of the Universe in very high energy gamma-rays, H.E.S.S. II is the largest Cherenkov telescope ever built, with its 28-meter-sized mirror. Together with the four smaller (12 meter) telescopes already in operation since [continue reading]

jul 202012
 
How a Middleweight Black Hole is Created

  A new model co-developed by BMCC Science Professors Saavik Ford and Barry McKernan shows how an elusive type of black hole can be formed in the gas surrounding their supermassive counterparts. This simulated image shows the interaction between a massive gas giant planet (comparable in mass to Jupiter) and a surrounding protoplanetary disk of [continue reading]