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Topic: Neutron Star (story)

	Top Story - EXOTIC INNARDS OF A NEUTRON STAR REVEALED IN A SERIES OF EXPLOSIONS - November 06, 2002 (Site not responding. Last check: 2007-10-07)
		Neutron star EXO 0748-676 (blue sphere in Image 1) is part of a binary star system, and its neighboring star (yellow-red sphere in Image 1) supplies the fuel for the thermonuclear bursts.
		Cottam and her team probed the neutron star's interior by measuring for the first time how light passing through the star's half-inch atmosphere is warped by extreme gravity, a phenomenon called the gravitational redshift.
		In a quark star, which is denser than a neutron star and has a different mass-to-radius ratio, neutrons are squeezed so tightly they liberate the subatomic quark particles and gluons that are the building blocks of atomic matter.
	www.gsfc.nasa.gov /topstory/20021003nsexplosion.html (1055 words)

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		Neutron stars, though postulated in 1934, and studied as theoretical objects in 1939 by J. Oppenheimer and G. Volkoff in Berkeley and R. Tolman in Pasadena, were for many decades not searched for by astronomers, even though the notion of Baade and Zwicky was quite convincing.
		Neutron stars that are detected by means of their beamed radiation, seen once every rotation, are called pulsars.
		Though neutron stars are usually detected through their very weak pulsed radio signal, occasionally one makes a spectacular appearance in the heavens that can be seen in telescopes because of the bow shock created in the interstellar hydrogen by its high velocity passage (as illustrated in Figure 5).
	www-nsdth.lbl.gov /~nkg/science_sp.html (5254 words)

	Halfbakery: sf setting: neutron star
		The story line isn't quite like what you have here, but you might like it (in fact, he has a number of stories which involve neutron stars, so you might want to read all his stuff).
		Neutron stars are just about the most interesting astrophysical phenomenon in the universe.
		The surface of a neutron star is thought to be high density crustals of crystalline iron, if you weren't aware.
	www.halfbakery.com /idea/sf_20setting_3a_20neutron_20star (626 words)

	neutron star on Encyclopedia.com (Site not responding. Last check: 2007-10-07)
		Astronomers Baade and Zwicky predicted the existence of neutron stars in 1933.
		The neutron star resembles a single giant nucleus because the density everywhere except in the outer shell is as high as the density in the nuclei of ordinary matter.
		There is observational evidence of the existence of several classes of neutron stars: pulsars are periodic sources of radio frequency, X ray, or gamma ray radiation that fluctuate in intensity and are considered to be rotating neutron stars.
	www.encyclopedia.com /html/n1/neutrons.asp (476 words)

	[No title] (Site not responding. Last check: 2007-10-07)
		The rate at which the neutron star at the heart of Geminga is slowing down leads to an estimate of 300,000 years for the age of the pulsar.
		The object is at the centre of the circle and the neutron star is indicated with an arrow; the field measures 80 x 80 arcsec2.
		A neutron star is the remnants left behind after a supernova explosion, as the material at the core collapses into a dense mass of neutrons.
	math.ucr.edu /home/baez/PUB/NeutronStar (12934 words)

	NASA - 09.08.2004 - Scientists Gain Glimpse Of Bizarre Matter In A Neutron Star
		Neutron star EXO 0748-676 (blue sphere in Item 1) is part of a binary star system, and its neighboring star (yellow-red sphere in Item 1) supplies the fuel for the thermonuclear bursts.
		The neutron star in today's announcement is part of a binary star system named EXO 0748-676, located in the constellation Volans, or Flying Fish, about 30,000 light-years away, visible in southern skies with a large backyard telescope.
		This triggers thermonuclear explosions on the neutron star surface that illuminate the region.
	www.nasa.gov /centers/goddard/news/topstory/2004/0908nsmatter.html (1290 words)

	Top Story - NEUTRON STAR, TURNING INTO RARE ULTRA-MAGNETIC OBJECT, REVEALS FAMILY TREE - January 06, 2004 (Site not responding. Last check: 2007-10-07)
		A neutron star is the core remains of a star at least eight times more massive than the Sun that exploded in a supernova event.
		Neutron stars are highly compact, highly magnetic, fast-spinning objects with about a Sun's worth of mass compressed into a sphere roughly ten miles in diameter.
		These objects are thought to be neutron stars created in the hearts of star explosions, and some still reside there, but they are too dim to study in detail.
	www.gwu.edu /~physics/0106magnetar.htm (947 words)

	Top Story - Mysterious "Twofaced" Star Explained, Scientists Say - Chandra X-Ray Observatory - Sept. 06, 2001 (Site not responding. Last check: 2007-10-07)
		The first neutron star is coy, completely hiding behind the swirl of gas that is falling on to it.
		The data revealed that the neutron star itself was not directly visible in X-ray light because it was hidden behind the accretion disk.
		Or, perhaps neutron stars -- created from burned-out, collapsed stars during supernova explosions -- are ejected from globular clusters with a thunderous kick as the neutron stars forms.
	www.gsfc.nasa.gov /topstory/20010906twofaced.html (1060 words)

	RedNova News - Space - Scientists Watch as Neutron Star Explodes (Site not responding. Last check: 2007-10-07)
		Neutron stars are about 10 km in diameter and have the mass of about 1.4 times that of our Sun.
		Neutron stars are one of the possible ends for a star.
		Neutron stars may appear in supernova remnants or in x-ray binaries with a normal star.
	www.rednova.com /news/stories/1/2004/02/24/story001.html (1267 words)

	Scientists watch 'movie' of neutron star explosion in real-time
		Computer artist's concept of a rare explosion on a neutron star, which is the dead core of a massive star.
		They could see details as fine as the neutron star's accretion disk, a ring of gas swirling around and flowing onto the neutron star, as the disk buckled from the explosion and then slowly recovered its original form after approximately 1,000 seconds.
		The scientists said the bursting neutron stars serve as a laboratory to study accretion disks, which are seen (but in less detail) throughout the Universe around nearby stellar fl holes and exceedingly distant quasar galaxies.
	www.physlink.com /News/022404NeutronStarExp.cfm (964 words)

	New Scientist Breaking News - Neutron stars may collide more often than thought (Site not responding. Last check: 2007-10-07)
		Neutron stars - the dense stellar corpses left after stars explode - may merge more often than thought, suggests the discovery of a new system.
		The two newly discovered neutron stars are whipping around each other in the closest and fastest orbit yet observed.
		Russell A Hulse and Joseph H Taylor Junior at Princeton University won the Nobel Prize in 1993 for their observation that the distance between a pair of neutron stars was shrinking because of energy carried off by gravitational waves.
	www.newscientist.com /article.ns?id=dn4450 (616 words)

	What's the weather like on neutron stars?
		Neutron stars are the collapsed cores of massive stars.
		The stars pull in matter from a normal neighbouring star, and when this pours onto the neutron core it creates an iron crust and an atmosphere of hydrogen and helium.
		"As the star rotates you see light and dark spots." His calculations show that the spinning rate of a neutron star combined with the speed of the Rossby waves across its surface exactly reproduce the pattern of X-ray flicker that astronomers have observed.
	www.eurekalert.org /pub_releases/2001-10/ns-wtw102501.php (327 words)

	Amazon.com: Books: Neutron Star (Site not responding. Last check: 2007-10-07)
		On the other hand, Neutron Star, one of Niven's early works, lacks the foregoing deficiencies and mainly highlight's Niven's strengths: a vivid vision of the future, and skillful use of science and speculation.
		In 1966 Larry Niven created the ultimate tourist with his award-winning short story "Neutron Star." It was the tale of Beowulf Shaeffer, a laid-off pilot heavily in debt and easy to flmail, and how the alien race the puppeteers convinced him to make a dangerous flyby of a neutron star.
		Neutron Star is Larry Niven's first collection of Beowulf Schaeffer stories, all of which are excellent examples of concise and stunning hard sci-fi, including the masterful story "Neutron Star", which won a Hugo for Best Short Story.
	www.amazon.com /exec/obidos/tg/detail/-/0345336941?v=glance (1385 words)

	Crusty young star makes its presence felt
		The answer is magnetars, neutron stars whose magnetic fields are the strongest in the universe.
		According to the magnetar theory, the common flashes that are the hallmark of SGRs are caused by "starquakes" in the outer rigid crust of the magnetar.
		Left behind is the neutron star, a spinning, liquid blob of jam-packed neutrons convered with a crust of heavy nuclei compressed by intense gravity into a solid, crystalline crust, far harder than the finest diamond anywhere.
	science.nasa.gov /newhome/headlines/ast29sep98_1.htm (2691 words)

	My Pet Neutron Star
		Neutron stars and their cousins, white dwarfs and fl holes, are extreme forms of matter that many scientists would love to tinker with -- if only they could get one in their lab.
		Neutron stars, on the other hand, weigh about 100 million tons per cubic centimeter, and their insides are 100 times hotter than the core of the Sun.
		No one has ever seen superfluid vortices inside a neutron star, but we have good reason to believe they exist: Many neutron stars are pulsars -- that is, they emit a beam of radiation as they spin.
	science.nasa.gov /headlines/y2002/03apr_neutronstars.htm?list736224 (1455 words)

	RedNova News - Space - Celestial Fireworks in the Universe (Site not responding. Last check: 2007-10-07)
		It is quite common for the core of an exploded supernova star to become a spinning neutron star (also called a pulsar - because of the regular pulses of energy from the rotational spin) after the immediate shedding of the star's outer layers.
		The neutron star in N 49 has had several subsequent gamma-ray emissions, and is now recognized as a "soft gamma-ray repeater." These objects are a peculiar class of stars producing gamma rays that are less energetic than those emitted by most gamma-ray bursters.
		The neutron star in N 49 is also emitting X-rays, whose energies are slightly less than that of soft gamma rays.
	www.rednova.com /news/stories/1/2003/07/04/story001.html (653 words)

	Science Articles \|\| Science Blog Community
		This record-breaking binary star consists of a neutron star and a lighter companion star.
		If a neutron star and a normal star rotate around each other, matter can pass from the normal star to the neutron star.
		This happens as soon as the gravitational force of the normal star is no longer strong enough to stop its outer layers from being pulled away by the attractive force of the neutron star.
	www.sciscoop.com /story/2004/5/10/20121/4402 (858 words)

	NASA - Top Story - neutron star explosion reveals inner accretion disk
		This movie and image series is a computer artist's concept of a rare explosion on a neutron star, which is the dead core of a massive star.
		The neutron star's strong gravity pulls gas from a nearby companion star (blue sphere in Image 1).
		A detailed rendering of the neutron star surface before the explosion is shown in Image 5, and Image 6 reveals what the surface might look like during the explosion.
	www.nasa.gov /centers/goddard/news/topstory/2004/0220stardisk.html (1278 words)

	Smart physics people needed (aka-HELP!) - Hatrack River Writers Workshop (Site not responding. Last check: 2007-10-07)
		So as it lies when my story begins, the habitable planet is suspended between the gravity of the neutron star and the twins.
		The neutron star is made out of the same stuff as the former star, minus anything thrown off, so it won't suddenly start attracting a neighbor that it didn't previously attract.
		The alternative is to have a binary star system in which one of the stars is a neutron, and place your habitable planet in a distanct orbit around the neutron star.
	www.hatrack.com /forums/writers/forum/Forum1/HTML/001312.html (3187 words)

	Scientists Watch 'Movie' Of Neutron Star Explosion In Real-time
		A massive and rare explosion on the surface of this neutron star -- pouring out more energy in three hours than the Sun does in 100 years -- illuminated the area and allowed the scientists to spy on details of the region never before revealed.
		An accretion disk refers to the flow of hot gas (plasma) swirling around neutron stars and fl holes, attracted by the strong gravity of the region.
		The scientists said the bursting neutron stars serve as a laboratory to study accretion disks, which are seen (but in less detail) through the Universe around nearby stellar fl holes and exceedingly distant quasar galaxies.
	www.sciencedaily.com /releases/2004/02/040224104409.htm (1004 words)

	SPACE.com -- Youngest Possible Black Hole Spotted Near Birth
		The star, SN 1986J, is about 30 million light-years away, so observations of the scene over the past 20 years represent light that took 30 million years to arrive.
		The outer layers of the star were then thrown outward with a bounce, generating a classic supernova explosion that was first spotted in 1986.
		The star's original mass is not known, so there's a roughly equal chance that the remaining central object is a neutron star or a fl hole.
	www.space.com /scienceastronomy/supernova_blackhole_040610.html (796 words)

	Scientists Glimpse Exotic Matter in a Neutron Star \| SpaceRef - Your Space Reference
		Spin-rate was the unknown factor needed to estimate the neutron star's size and total mass.
		A neutron star is the core remnant of a star once bigger than the sun.
		The result supports the theory that matter in the neutron star in EXO 0748-676 is packed so tightly that almost all protons and electrons are squeezed together to become neutrons, which swirl about as a superfluid, a liquid that flows without friction.
	www.spaceref.com /news/viewpr.html?pid=14996 (974 words)

	ScienceDaily: Related Stories (Site not responding. Last check: 2007-10-07)
		Scientists Watch 'Movie' Of Neutron Star Explosion In Real-time (February 24, 2004) — Scientists at the Canadian Institute for Theoretical Astrophysics (CITA) and NASA have captured unprecedented details of the swirling flow of gas hovering just a few miles from the surface of a neutron star, itself a sphere only about ten miles across.
		How Neutron Stars Get Their Kicks: Cornell Researcher Poses Rocket Theory (June 14, 2000) — A newly formed neutron star is sent whizzing along at several hundred miles a second, sometimes more than 600 miles a second, compared with the original star, which typically was dawdling along at a few tens of miles a second.
		Apparently, the neutron star is "kicked" at birth.
	www.sciencedaily.com /related.php?filename=040224104409 (769 words)

	Universe Today - Star Mimics a Black Hole
		A neutron star is a compressed, very dense ball of matter formed when a giant star explodes after its nuclear fuel runs out.
		The two stars in Circinus X-1 interact, with the neutron star's gravity pulling matter off the larger star onto the neutron star's surface.
		Jets are believed to emerge, not from fl holes themselves, but from their 'accretion disk' - the belt of dismembered stars and gas that a fl hole drags in towards it.
	www.universetoday.com /am/publish/star_mimic_black_hole.html (781 words)

	Science Articles \|\| Science Blog Community
		The New York Times reported Sunday on a neutron star in our own galaxy that, last December, briefly released a burst of gamma radiation that exceeded the entire galaxy's normal output; BBC also has a report.
		SGR 1806-20 has a history of previous gamma bursts (SGR stands for Soft Gamma Repeater), and was known as a magnetar, a neutron star with extremely intense magnetic fields, of which there may be only a few dozen in the entire galaxy.
		Like all neutron stars, the star is greatly compacted, to about 20 km diameter, and rotates once every 7.5 seconds.
	www.sciscoop.com /story/2005/2/21/94249/2079 (555 words)

	Spaceflight Now \| Breaking News \| Cosmic mystery: Where is that missing neutron star?
		When a massive star explodes, it leaves behind some sort of compact object, either a city-sized ball of subatomic particles called a neutron star, or a fl hole.
		The outcome depends on the mass of the progenitor star.
		A neutron star at the distance of the Large Magellanic Cloud can be detected only when it emits beams of radiation as a pulsar, or when it accretes hot matter like a fl hole.
	www.spaceflightnow.com /news/n0506/06supernova (1254 words)

	Spaceflight Now \| Breaking News \| Spitzer observes echo of neutron star outburst
		Energy from the blast is heating clumps of interstellar dust, tracing the blast's progress outward from its source, said Oliver Krause and George H. Rieke of the University of Arizona's Steward Observatory.
		About 50 years ago, the neutron star appears to have shot tremendous energy in opposite directions, in paths roughly perpendicular to the direction toward Earth, Krause and Rieke said.
		Krause analyzed how the features had moved in a year's time, and the researchers realized that some of the infrared wisps and knots were at the wrong location to be ejecta from the supernova Cas A explosion itself 325 years ago.
	www.spaceflightnow.com /news/n0506/10spitzer (1040 words)

	Cosmic Search Vol. 1, No. 1 - Little Green Men, White Dwarfs or Pulsars? (Site not responding. Last check: 2007-10-07)
		The story began in the mid-1960's, when the technique of interplanetary scintillation (IPS) was discovered.
		Besides 11/3 seconds was far too fast a pulsation rate for anything as large as a star.
		He started by saying that this was the first he had heard of these stars, and therefore he had not thought about it a lot, but that he thought these must be supernova remnants rather than white dwarfs.
	www.bigear.org /vol1no1/burnell.htm (2588 words)

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