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Latest Stellar black hole Stories

microquasar
2014-03-01 05:17:23

April Flowers for redOrbit.com - Your Universe Online A new superpowered small black hole, called MQ1, has been discovered by a team of Australian and American astronomers who were studying nearby galaxy M83. MQ1 is the first object of its kind to be studied in this much detail. Previously, astronomers have found a few compact objects as powerful as MQ1, but they have been unable to calculate the size of the black hole contained within until now. Using multiple telescopes, the team's...

Lightweight Black Hole Has Elegant Manners
2013-11-29 05:00:59

April Flowers for redOrbit.com - Your Universe Online Our understanding of how some black holes consume matter might be changed by new observations of a black hole powering an energetic X-ray source in a galaxy some 22 million light years away. The findings, published in a recent issue of Nature, indicate that this particular black hole, thought to be the engine behind the X-ray source’s high-energy light output, is unexpectedly lightweight. Additionally, in spite of the generous amount...

NuSTAR Helps Scientists Hunt For Medium-Sized Black Holes
2013-11-27 15:39:33

Lee Rannals for redOrbit.com - Your Universe Online NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) is helping scientists determine whether black holes need a medium-sized category. Black holes are known to either come in masses of only about 10 times that of our sun, or the equivalent in mass of up to 10 billion suns. However, NuSTAR could be finally finding a middle ground. "Exactly how intermediate-sized black holes would form remains an open issue," Dominic Walton, of the...

New Black Hole In GLobular Cluster
2013-11-07 07:51:37

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have discovered a new black hole candidate sitting inside a globular cluster known as M62. The latest discovery, reported in the Astrophysical Journal, adds weight to the argument that black holes are a common occurrence in these star clusters. Astronomers discovered two black holes in a globular cluster, known as M22, last year . "This implies that the discovery of the other black hole, in the globular cluster called...

Two Black Holes Form, Fuse Together After Star Collapses
2013-11-07 07:17:18

[ Watch the video: Supermassive Star Collapses, Forms Two Black Holes ] April Flowers for redOrbit.com - Your Universe Online Black holes are massive objects in space that have gravitational forces so strong that not even light can escape them. These objects, swirling at the centers of galaxies, also come in a variety of sizes. On the small end of the spectrum are stellar-mass black holes, which are formed during the deaths of stars. On the largest end are supermassive black holes....

Monstrous Stellar Collisions Not Expected To Occur Anytime Soon
2013-07-11 14:32:31

Lee Rannals for redOrbit.com - Your Universe Online Astrophysicists from the Astronomical Observatory of the Faculty of Physics at the University of Warsaw say the next collision of monstrous stars will not occur until billions of years from now. Three years ago, scientists discovered that the Magellanic Clouds host gigantic stars with between 200 and 300 times the solar mass  of our own Sun. Before then, astronomers believed that the biggest stars in the Universe did not...

Astronomers May Have Witnessed A Collapsing Neutron Star
2013-07-05 04:16:37

John P. Millis, PhD for redOrbit.com - Your Universe Online Radio observatories have recently noticed bursts of radio light emerging in the night sky. The intense flashes exist for only a moment then disappear and do not seem to repeat. These so called 'blitzars' are a mystery, but researchers Heino Falcke (Max-Plank Institute for radio astronomy) and Luciano Rezzolla (Albert-Einstein Institute in Potsdam) have suggested we may be witnessing the death-cry of a supermassive pulsar...

2013-06-14 12:20:20

GREENBELT, Md., June 14, 2013 /PRNewswire-USNewswire/ -- A new study by astronomers at NASA, Johns Hopkins University and the Rochester Institute of Technology confirms long-held suspicions about how stellar-mass black holes produce their highest-energy light. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "Our work traces the complex motions, particle interactions and turbulent magnetic fields in billion-degree gas on the threshold of a black hole, one of the most extreme...

NuSTAR Observes Dormant Black Hole In Nearby Sculptor Galaxy
2013-06-12 08:35:23

April Flowers for redOrbit.com - Your Universe Online NASA´s Chandra X-ray Observatory caught signs of what appeared to be a black hole eating gas at the middle of the nearby Sculptor Galaxy nearly a decade ago. A new observation by NASA´s Nuclear Spectroscopic Telescope Array (NuSTAR) has found the black hole asleep. Details of NuSTAR´s findings were published in the Astrophysical Journal. "Our results imply that the black hole went dormant in the past 10 years," said...

Supermassive Black Holes Podcast
2013-02-13 11:56:55

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Click here to stream the “Supermassive Black Holes” podcast (Or right-click on the above link to download the file to your computer) Only a couple decades ago, the mere idea of supermassive black holes — those that are millions or billions of times more massive than our sun — seemed unthinkable to most astronomers. Now, however, we believe that these enormous objects lie at the center of nearly...


Latest Stellar black hole Reference Libraries

3_19a73d2fffe222de349da50260d972802
2004-10-19 04:45:40

Cygnus X-1 -- Cygnus X-1 (often abbreviated to Cyg X-1) is an X-ray source in the Cygnus constellation considered to be one of the most likely black hole candidates. The optical counterpart (HDE 226868) is a variable 8.9 magnitude star (visible with good binoculars in good observing conditions.) at right ascension 19 h 56.5 min and declination of 35 deg 4 min (for 1950 epoch). Cyg X-1 is a binary star that contains a O9-B0 supergiant (with a surface temperature of 31000 Kelvin) and a...

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