Black Hole 270
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Black Hole 270
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Matzner, R. A., Seidel, H. E. , Shapiro, S. L. , Smarr, L., Suen, W. M., Teukolsky, S. A., & Winicour, J. (1995). Geometry of a black hole collision . Science , 270 (5238), 941-947. https://doi.org/10.1126/science.270.5238.941
Matzner, RA, Seidel, HE , Shapiro, SL , Smarr, L, Suen, WM, Teukolsky, SA & Winicour, J 1995, ' Geometry of a black hole collision ', Science , vol. 270, no. 5238, pp. 941-947. https://doi.org/10.1126/science.270.5238.941
Matzner RA, Seidel HE , Shapiro SL , Smarr L, Suen WM, Teukolsky SA et al. Geometry of a black hole collision . Science . 1995;270(5238):941-947. https://doi.org/10.1126/science.270.5238.941
Matzner, Richard A. ; Seidel, H. E. ; Shapiro, Stuart L. et al. / Geometry of a black hole collision . In: Science . 1995 ; Vol. 270, No. 5238. pp. 941-947.
@article{790d43519b554049af459e1170648b61,
title = "Geometry of a black hole collision",
abstract = "The Binary Black Hole Alliance was formed to study the collision of black holes and the resulting gravitational radiation by computationally solving Einstein's equations for general relativity. The location of the black hole surface in a head-on collision has been determined in detail and is described here. The geometrical features that emerge are presented along with an analysis and explanation in terms of the spacetime curvature inherent in the strongly gravitating black hole region. This curvature plays a direct, important, and analytically explicable role in the formation and evolution of the event horizon associated with the surfaces of the black holes.",
author = "Matzner, {Richard A.} and Seidel, {H. E.} and Shapiro, {Stuart L.} and L. Smarr and Suen, {W. M.} and Teukolsky, {Saul A.} and J. Winicour",
doi = "10.1126/science.270.5238.941",
publisher = "American Association for the Advancement of Science",
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Richard A. Matzner, H. E. Seidel, Stuart L. Shapiro , L. Smarr, W. M. Suen, Saul A. Teukolsky, J. Winicour
Research output : Contribution to journal › Article › peer-review
The Binary Black Hole Alliance was formed to study the collision of black holes and the resulting gravitational radiation by computationally solving Einstein's equations for general relativity. The location of the black hole surface in a head-on collision has been determined in detail and is described here. The geometrical features that emerge are presented along with an analysis and explanation in terms of the spacetime curvature inherent in the strongly gravitating black hole region. This curvature plays a direct, important, and analytically explicable role in the formation and evolution of the event horizon associated with the surfaces of the black holes.
Geometry of a black hole collision. / Matzner, Richard A.; Seidel, H. E. ; Shapiro, Stuart L. et al.
Research output : Contribution to journal › Article › peer-review
T1 - Geometry of a black hole collision
N2 - The Binary Black Hole Alliance was formed to study the collision of black holes and the resulting gravitational radiation by computationally solving Einstein's equations for general relativity. The location of the black hole surface in a head-on collision has been determined in detail and is described here. The geometrical features that emerge are presented along with an analysis and explanation in terms of the spacetime curvature inherent in the strongly gravitating black hole region. This curvature plays a direct, important, and analytically explicable role in the formation and evolution of the event horizon associated with the surfaces of the black holes.
AB - The Binary Black Hole Alliance was formed to study the collision of black holes and the resulting gravitational radiation by computationally solving Einstein's equations for general relativity. The location of the black hole surface in a head-on collision has been determined in detail and is described here. The geometrical features that emerge are presented along with an analysis and explanation in terms of the spacetime curvature inherent in the strongly gravitating black hole region. This curvature plays a direct, important, and analytically explicable role in the formation and evolution of the event horizon associated with the surfaces of the black holes.
UR - http://www.scopus.com/inward/record.url?scp=0001456981&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001456981&partnerID=8YFLogxK
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NASA has announced that it has isolated the mass and location of what could be a “wandering” black hole using the Hubble Space Telescope. This is the first time in the space agency’s history it has been able to achieve this, despite there being over 100 million black holes populating our galaxy.
Up until now, black holes have largely been considered theoretical , with measurements being taken on their influence upon other interstellar bodies, rather than the holes themselves. Measuring the effect it has on the stars around it is how NASA has identified the presence of the black hole in the past.
But after six years of using the Hubble to observe the Carina-Sagittarius spiral arm of our galaxy, NASA was able to detect the black hole traveling through the arm about 5,000 light-years away. Taking a wandering path through the galaxy is unique for this black hole, as scientists believe that most either occupy the core of a galaxy or are paired with a binary system nearby, which is how they can be observed, through its interaction.
But this wandering hole is a solitary traveler in our galaxy, leading scientists to conclude that when the black hole was formed millions of years ago, it received a “kick” from the supernova that created it, which provided the momentum to send it on a journey throughout the galaxy.
“Black holes roaming our galaxy are born from rare, monstrous stars (less than one-thousandth of the galaxy’s stellar population) that are at least 20 times more massive than our Sun,” says the NASA statement announcing the find.
“These stars explode as a supernova, and the remnant core is crushed by gravity into a black hole. Because the self-detonation is not perfectly symmetrical, the black hole may get a kick, and go careening through our galaxy like a blasted cannonball.”
Hubble can’t actually take a picture of the black hole , since it sucks in all light, rather than reflect it. But as the black hole warps space through its interaction, the light coming from surrounding stars is bent and is actually amplified as the black hole travels in front of it, giving astronomers the ability to observe it. Additionally, astronomers are able to rule out the effects of neighboring stars since there is no color shift when the rotating stars move into alignment.
Two teams observed the black hole, using data from Hubble to ascertain the wandering black hole’s position, both coming to slightly different conclusions as to size, but agreeing that the hole is present and largely compact.
The data was collected using a technique known as “Astrometric microlensing,” which can be used to detect objects that range from the mass of a planet to the mass of a star, regardless of the light they emit. The technique, which was postulated by Albert Einstein in his seminal 1916 paper on general relativity, was developed by astronomers a few years later, to measure a background star being offset by two arcseconds, thereby validating Einstein’s theories.
The Hubble observed the nearby light as it was amplified and warped over a 270-day period, and the teams took another six years to process the data and come to the conclusion that it may be a black hole traveling through our galaxy.
But even though the teams believe that phenomenon is a black hole, they also admit it could be the effects of a nearby neutron star. The estimated mass of the invisible compact object is measured to be between 1.6 and 4.4 times that of the Sun. At the high end of this range, the object would be a black hole; at the low end, it would be a neutron star.
“As much as we would like to say it is definitively a black hole, we must report all allowed solutions. This includes both lower-mass black holes and possibly even a neutron star,” said Jessica Lu of the Berkeley team.
“Whatever it is, the object is the first dark stellar remnant discovered wandering through the galaxy, unaccompanied by another star” Lam added.
The team estimates that the object has a mass of over seven solar masses and is traveling through the Milky Way galaxy at over 100,000 miles an hour.
Planet in close relative proximity to P3W-451 , a planet on the edge of a newly formed black hole. After dialing 451 and being unable to shut down the wormhole Stargate Command detonated a focused explosive device directed at the wormhole, forcing the other end to "jump" from 451 to P2A-270.
This did the planet no harm, and allowed Earth to simply shut down its gate as normal. (There is no indication that a team from Earth ever visited the planet.)
HOME TO - Unknown
FIRST APPEARED - N/A
A Matter of Time - The S.G.C. forces the Stargate to jump to P2A-270 in order to escape the effects of a black hole on the other end.
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