Black Holes & Quasars—18 Nov • Black hole • Quasar Ast 207 F2009
... moved same as it did from 1995.53 to 1996.43 (0.9yr). Why did the star move so fast when it was near Sgr A*? a. b. c. d. ...
... moved same as it did from 1995.53 to 1996.43 (0.9yr). Why did the star move so fast when it was near Sgr A*? a. b. c. d. ...
Cosmic Surveyor
... In 1907, Einstein was preparing a review of special relativity when he suddenly wondered how Newtonian gravitation would have to be modified to fit in with special relativity. At this point there occurred to Einstein, described by him as the happiest thought of my life , namely that an observer who ...
... In 1907, Einstein was preparing a review of special relativity when he suddenly wondered how Newtonian gravitation would have to be modified to fit in with special relativity. At this point there occurred to Einstein, described by him as the happiest thought of my life , namely that an observer who ...
Searching for the Most Distant Black Holes in the Early
... • Two matching fields, north and south • 30 times more area than UDF • Each field is 10x16 arcminutes: – 30 times more area than UDF – about half the size of the full moon ...
... • Two matching fields, north and south • 30 times more area than UDF • Each field is 10x16 arcminutes: – 30 times more area than UDF – about half the size of the full moon ...
9. The very beginning - Mullard Space Science Laboratory
... 9. The beginning • This short lecture: • The hot big bang • Timeline –10-43 seconds to 380,000 years. ...
... 9. The beginning • This short lecture: • The hot big bang • Timeline –10-43 seconds to 380,000 years. ...
Lecture 25&26
... Real stars do not form Schwarzschild black holes because they rotate! Full Schwarzschild solution needs existence of “white hole”… these violate key laws of physics (2nd law of thermodynamics). Even if they did exist, they are unstable! Try to pass through it and it collapses! An unstable wormhole w ...
... Real stars do not form Schwarzschild black holes because they rotate! Full Schwarzschild solution needs existence of “white hole”… these violate key laws of physics (2nd law of thermodynamics). Even if they did exist, they are unstable! Try to pass through it and it collapses! An unstable wormhole w ...
p1210bh_brief
... • Beyond the neutron star limit, no known force can resist the crush of gravity. • As far as we know, gravity crushes all the matter into a single point known as a singularity. ...
... • Beyond the neutron star limit, no known force can resist the crush of gravity. • As far as we know, gravity crushes all the matter into a single point known as a singularity. ...
NEUTRON STAR?
... by 4 p.m. on Tuesday letting you know if the observing session is on for the night or cancelled. ...
... by 4 p.m. on Tuesday letting you know if the observing session is on for the night or cancelled. ...
Absolute Zero Occurs in Black Holes
... where h is the Dirac constant, c is the speed of light, k8 is the Boltzmann constant, G is the gravitational constant, M is the mass of the black hole and Mʘ is the mass of the sun. This has important consequences; the bigger the black hole the colder it is, and thus the slower it loses mass. If thi ...
... where h is the Dirac constant, c is the speed of light, k8 is the Boltzmann constant, G is the gravitational constant, M is the mass of the black hole and Mʘ is the mass of the sun. This has important consequences; the bigger the black hole the colder it is, and thus the slower it loses mass. If thi ...
The Universe – The Most Dangerous Places
... How would your fate be different in a super massive black hole different as opposed to a stellar black hole? How is the black hole at the center of our galaxy different from other black holes? ...
... How would your fate be different in a super massive black hole different as opposed to a stellar black hole? How is the black hole at the center of our galaxy different from other black holes? ...
Black Dwarf Presentation
... • Universe is too young to create black dwarfs • White dwarf decay length is unknown • No proof of existence • Matter would be extremely dense • Thought to be the final product of our Sun ...
... • Universe is too young to create black dwarfs • White dwarf decay length is unknown • No proof of existence • Matter would be extremely dense • Thought to be the final product of our Sun ...
AMUSE-Virgo Super-massive black holes vs. nuclear star clusters: the X-ray view
... clusters + Ultra-luminous X-ray sources in early type galaxies (Chandra+Hubble) ...
... clusters + Ultra-luminous X-ray sources in early type galaxies (Chandra+Hubble) ...
PowerPoint - Chandra X
... The elongated shape of the gas cloud is thought to be due to the funneling effect of a torus of cool gas and dust that surrounds the black hole. ...
... The elongated shape of the gas cloud is thought to be due to the funneling effect of a torus of cool gas and dust that surrounds the black hole. ...
Selected Physical and Astronomical Constants Conversion Factors
... it look black? Where do black holes exist in the Universe? Does the black hole look different when I fall toward it? What does it feel like to fall into a black hole? Am I comfortable? Do I see the stars overhead as I fall into a black hole? If so, do these stars change position or color as I fall? ...
... it look black? Where do black holes exist in the Universe? Does the black hole look different when I fall toward it? What does it feel like to fall into a black hole? Am I comfortable? Do I see the stars overhead as I fall into a black hole? If so, do these stars change position or color as I fall? ...
title of lesson plan - Discovery Education
... 1. Collect several examples of short stories based on black holes. Compare the stories with regard to scientific accuracy and the function of black holes in the plots. In each case, describe how the author portrays the relationship between the characters and the black hole. Is the black hole treate ...
... 1. Collect several examples of short stories based on black holes. Compare the stories with regard to scientific accuracy and the function of black holes in the plots. In each case, describe how the author portrays the relationship between the characters and the black hole. Is the black hole treate ...
Antimatter - schoolphysics
... If we can have an anti-electron (a positron) and an anti proton then why not an anti neutron and in fact a whole set of anti particles that 'mirror' the particles that make up our universe? These anti-particles would combine to form a 'new' type of matter known as antimatter. In fact antimatter does ...
... If we can have an anti-electron (a positron) and an anti proton then why not an anti neutron and in fact a whole set of anti particles that 'mirror' the particles that make up our universe? These anti-particles would combine to form a 'new' type of matter known as antimatter. In fact antimatter does ...
Blackholes - Indiana University Astronomy
... • How does a white dwarf form? • Why are pulsars observed to emit regular bursts of radio light? • Professor X just announced the discovery of a neutron star with a mass of 7.6 times the mass of the Sun. Do you think Professor X is right? Why? ...
... • How does a white dwarf form? • Why are pulsars observed to emit regular bursts of radio light? • Professor X just announced the discovery of a neutron star with a mass of 7.6 times the mass of the Sun. Do you think Professor X is right? Why? ...
Part II: Ideas in Conflict.
... • The flat surface shown in (a) represents two dimensional space in spacetime. You can think of it as a large flat sheet of rubber. In the absence of any matter, straight lines are straight in our intuitive sense (the sheet is flat). • In the presence of matter, spacetime curves, as shown in (b) by ...
... • The flat surface shown in (a) represents two dimensional space in spacetime. You can think of it as a large flat sheet of rubber. In the absence of any matter, straight lines are straight in our intuitive sense (the sheet is flat). • In the presence of matter, spacetime curves, as shown in (b) by ...
Hawking radiation
Hawking radiation is black body radiation that is predicted to be released by black holes, due to quantum effects near the event horizon. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after Jacob Bekenstein, who predicted that black holes should have a finite, non-zero temperature and entropy.Hawking's work followed his visit to Moscow in 1973 where the Soviet scientists Yakov Zeldovich and Alexei Starobinsky showed him that, according to the quantum mechanical uncertainty principle, rotating black holes should create and emit particles. Hawking radiation reduces the mass and energy of black holes and is therefore also known as black hole evaporation. Because of this, black holes that lose more mass than they gain through other means are expected to shrink and ultimately vanish. Micro black holes are predicted to be larger net emitters of radiation than larger black holes and should shrink and dissipate faster.In September 2010, a signal that is closely related to black hole Hawking radiation (see analog gravity) was claimed to have been observed in a laboratory experiment involving optical light pulses. However, the results remain unverified and debatable. Other projects have been launched to look for this radiation within the framework of analog gravity. In June 2008, NASA launched the Fermi space telescope, which is searching for the terminal gamma-ray flashes expected from evaporating primordial black holes. In the event that speculative large extra dimension theories are correct, CERN's Large Hadron Collider may be able to create micro black holes and observe their evaporation.