Quantcast

Latest Neutron star Stories

Dense Matter Of Neutron Stars Revealed Through X-Ray Observations
2013-03-07 12:03:35

April Flowers for redOrbit.com - Your Universe Online The densest matter in the Universe outside of black holes is contained in neutron stars, the ultra-dense cores left behind after massive stars collapse. One of the most reliable determinations yet of the relationship between the radius of a neutron star and its mass has been provided by new results from NASA's Chandra, along with European Space Agency's (ESA) XMM-Newton and NASA's Rossi X-ray Timing Explorer (RXTE), which constrain how...

Scientists Recreate Spiral Arms Of Ancient Milky Way
2013-03-04 19:11:57

Brett Smith for redOrbit.com — Your Universe Online Using observations made possible by the European Space Agency´s INTEGRAL satellite, a pair of French scientists has been able to recreate how the Milky Way´s spiral arms looked millions of years ago. According to their report in the Astrophysical Journal, the two researchers based their recreation on the observations of high mass X-ray binaries (HMXBs), pairs of massive stars that are surrounded with the remnants of...

Astronomers Discover Youngest Black Hole In Milky Way
2013-02-13 12:11:40

Lee Rannals for redOrbit.com — Your Universe Online A rare explosion from a rotating star may have created the most recent black hole formed in the Milky Way galaxy. Astronomers using NASA's Chandra X-ray Observatory claim that matter was ejected at high speeds along the poles of a rotating star, creating a supernova remnant, W49B, which may contain a young black hole. "W49B is the first of its kind to be discovered in the galaxy," said Laura Lopez, who led the study at the...

New Chandra Footage Suggests Vela Pulsar May Be Precessing
2013-01-08 12:30:00

Watch the video "Chandra Captures Neutron Star In Action" redOrbit Staff & Wire Reports - Your Universe Online New video footage of the Vela pulsar, a neutron star located approximately 1,000 light-years from Earth, suggests that the pulsar could be slowly wobbling as it spins, NASA officials said on Monday. Formed following the collapse of a massive star, the Vela pulsar is approximately 12 miles in diameter and capable of making a complete rotation in under 90 milliseconds. The...

Researchers Disprove Pulsar Glitch Theory
2012-12-18 16:21:44

Lee Rannals for redOrbit.com — Your Universe Online Researchers reported in the journal Physical Review Letters that they have found a "glitch" in a 40-year-old theory explaining the periodic speeding up or "glitching" of pulsars. Pulsars emit a rotating beam of electromagnetic radiation, which can be detected by powerful telescopes once it sweeps past the Earth. The cosmic objects, which are highly magnetized rotating neutron stars formed from the remains of supernovae, rotate...

Supernova Remnant Reveals Its Aftershock
2012-11-14 12:57:25

Lee Rannals for redOrbit.com - Your Universe Online A new image released by the European Space Agency (ESA) shows the aftershock of a stellar explosion coming from supernova remnant W44. W44 is about 10,000 light-years away from Earth in a forest of dense star-forming clouds in the constellation of Aquila. ESA said the image is one of the best examples of a supernova remnant interacting with its parent molecular cloud. The supernova remnant measures about 100 light-years across....

Pulsar Speed And Rotation Explained By New Model
2012-10-09 14:38:04

Lee Rannals for redOrbit.com - Your Universe Online A new model developed by researchers at the University of Southampton explains how the spin of a pulsar slows down as the star gets older. A pulsar is a highly magnetized rotating neutron star that forms from the remains of a supernova which emits a rotating beam of electromagnetic radiation. Pulsars rotate at very stable speeds, but slow down as they emit radiation and lose their energy. Researchers now say that they have found a...

Chandra Finds Young Supernova Remnant Spitting Out X-rays
2012-07-31 05:18:12

April Flowers for redOrbit.com - Your Universe Online In a galaxy not that far away, astronomically speaking at least, researchers using NASA's Chandra X-ray Observatory have detected the first x-rays emitted by the debris of a young supernova, SN 1957D. 15 million light years from Earth, in the M83 spiral galaxy, SN 1957D is one of only a few supernova located outside the Milky Way galaxy that is detectable in both radio and optical wavelengths, decades after the explosion itself was...


Latest Neutron star Reference Libraries

7_d6897d09acee1dd0c34d0fbf62ff7d0b2
2004-10-19 04:45:44

X-Ray Astronomy -- Although the more energetic X-rays (E > 30 keV) can penetrate the air at least for distances of a few meters (they would never have been detected and medical X-ray machines would not work if this was not the case) the Earth's atmosphere is thick enough that virtually none are able to penetrate from outer space all the way to the Earth's surface. X-rays in the 0.5 - 5 keV range, where most celestial sources give off the bulk of their energy, can be stopped by a few...

6_f90ed86f2fe38a60d6f89c02ad7d21082
2004-10-19 04:45:43

X-ray Pulsar -- This dramatic artist's vision shows a city-sized neutron star centered in a disk of hot plasma drawn from its enfeebled red companion star. Ravenously accreting material from the disk, the neutron star spins faster and faster emitting powerful particle beams and pulses of X-rays as it rotates 400 times a second. Could such a bizarre and inhospitable star system really exist in our Universe? Based on data from the orbiting Rossi X-Ray Timing Explorer (RXTE) satellite,...

6_79c799b9f03f60809a9d0aecf38491202
2004-10-19 04:45:42

Supernova -- A supernova is a star that increases its brightness drastically within a matter of days, making it appear as if a "new" star was born (hence "nova"). The "super" prefix distinguishes it from a mere nova, which also involves a star increasing in brightness, though to a lesser extent and through a much different mechanism. Astronomers have classified supernovae in several classes, according to the lines of different elements that appear in their spectra. The first...

6_f22173fe0f79e2d306163d61f6859f022
2004-10-19 04:45:42

Strange Matter -- Strange matter (also known as quark matter) is an ultra-dense phase of matter that is theorized to form inside particularly massive neutron stars (which are then known as "strange stars" or "quark stars"). It's theorized that when neutronium is put under sufficient pressure due to the gravitation of a large neutron star, the individual neutrons break down and their constituent quarks form strange matter. Strange matter is composed of strange quarks bound to each...

6_c90fae467630fef07c8241387669e4e42
2004-10-19 04:45:42

Pulsar -- A pulsar, which originally stood for pulsating radio source, is a rapidly rotating neutron star, whose electromagnetic radiation is observed in regularly spaced interval, or pulses. Pulsars are closely related to magnetars, the main difference being the strenght of the object's magnetic field. History Pulsars were discovered by Jocelyn Bell and Antony Hewish in 1967 while they were using a radio array to study the scintillation of quasars. They found a very regular...

More Articles (7 articles) »
Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'