PowerPoint
... show up on the exam. An excellent way to begin studying is to review the homework problems, particularly those you missed (or got right but were not so sure about). Be sure you understand what the right answer is, and more importantly, why it is right. – You will need to understand and be able to us ...
... show up on the exam. An excellent way to begin studying is to review the homework problems, particularly those you missed (or got right but were not so sure about). Be sure you understand what the right answer is, and more importantly, why it is right. – You will need to understand and be able to us ...
Alberto Vecchio, University of Birmingham
... is a “channel” though which part of the available energy can be converted into and radiated as EM waves: – During a supernova explosion there is all sorts of radiation (including neutrinos) – What about NS-NS binaries? Are they the progenitors of (some class of) gamma ray bursts? – And black hole bi ...
... is a “channel” though which part of the available energy can be converted into and radiated as EM waves: – During a supernova explosion there is all sorts of radiation (including neutrinos) – What about NS-NS binaries? Are they the progenitors of (some class of) gamma ray bursts? – And black hole bi ...
Summary - Chandra X
... density slow thermal wind caused by irradiation heating should produce a mass loss rate 7 times higher than the accretion rate! New simulations of large (~10 pc) scale radiation-driven outflows in AGN (Kurosawa): 3D simulations – clumpy bipolar outflow generated by cos i dependence of disk emission. ...
... density slow thermal wind caused by irradiation heating should produce a mass loss rate 7 times higher than the accretion rate! New simulations of large (~10 pc) scale radiation-driven outflows in AGN (Kurosawa): 3D simulations – clumpy bipolar outflow generated by cos i dependence of disk emission. ...
Acceleration radiation, transition probabilities and trans-Planckian physics
... spacetime, with acceleration a, feels itself immersed in a thermal bath at the temperature T = h̄a/2π ck B , when the quantum state of the field is the ordinary Minkowski vacuum. The acceleration radiation effect can be analyzed from two different points of view. It can be derived by computing the e ...
... spacetime, with acceleration a, feels itself immersed in a thermal bath at the temperature T = h̄a/2π ck B , when the quantum state of the field is the ordinary Minkowski vacuum. The acceleration radiation effect can be analyzed from two different points of view. It can be derived by computing the e ...
A Motivation of Quantum Mechanics
... mechanics was developed as a theory) quantum optics experiments have been conducted that are at least in spirit similar to the double slit experiments I will be discussing and that confirmed all the predictions based on quantum mechanics. All these thought experiments consist of a source of whatever ...
... mechanics was developed as a theory) quantum optics experiments have been conducted that are at least in spirit similar to the double slit experiments I will be discussing and that confirmed all the predictions based on quantum mechanics. All these thought experiments consist of a source of whatever ...
Electrically tunable hole g factor of an optically active quantum dot
... functions inside the QD by values up to about 0.6 nm in this experiment. The electron wave function is more delocalized than the hole largely on account of its smaller effective mass. The electron averages over a relatively large extent and this averaging does not change significantly on displacing ...
... functions inside the QD by values up to about 0.6 nm in this experiment. The electron wave function is more delocalized than the hole largely on account of its smaller effective mass. The electron averages over a relatively large extent and this averaging does not change significantly on displacing ...
Broad Relativistic Iron Lines from Neutron Star LMXBs
... signal-to-noise for both burst oscillations and X-ray spectrum. Note that RXTE-PCA operated with much lesser area during most of its lifetime. (3) Most promising sources are known from RXTE observations. (4) Astrosat will model the burst and non-burst emissions in a much larger (than RXTE) photon-en ...
... signal-to-noise for both burst oscillations and X-ray spectrum. Note that RXTE-PCA operated with much lesser area during most of its lifetime. (3) Most promising sources are known from RXTE observations. (4) Astrosat will model the burst and non-burst emissions in a much larger (than RXTE) photon-en ...
Presentation (PowerPoint File)
... • Almost exclusively, the current approach to all problems even General Relativity is to convert the equations to a 3+1 evolution problem (Even physicists sometimes can’t think [or at least compute] in true 4-D) – Present-day computers are simply not powerful enough to contain all of 4-D spaceti ...
... • Almost exclusively, the current approach to all problems even General Relativity is to convert the equations to a 3+1 evolution problem (Even physicists sometimes can’t think [or at least compute] in true 4-D) – Present-day computers are simply not powerful enough to contain all of 4-D spaceti ...
1917 The Quantum Theory of Radiation
... A little while ago I obtained a derivation, related to Wien’s original idea, of the Planck radiation formula which is based on the fundamental assumption of quantum theory and which makes use of the relationship of Maxwell’s curve to the spectral distribution curve. This derivation deserves consider ...
... A little while ago I obtained a derivation, related to Wien’s original idea, of the Planck radiation formula which is based on the fundamental assumption of quantum theory and which makes use of the relationship of Maxwell’s curve to the spectral distribution curve. This derivation deserves consider ...
Quantum Gravity on $ dS_ {3} $
... More recently, de Sitter entropy has been computed using a CFT at past or future infinity [6, 7, 8] motivated by the dS/CFT correspondence [9, 10]. It is shown in [11] that the asymptotic symmetry group of quantum gravity in dS3 is the Euclidean conformal group in two dimensions. This has led to the ...
... More recently, de Sitter entropy has been computed using a CFT at past or future infinity [6, 7, 8] motivated by the dS/CFT correspondence [9, 10]. It is shown in [11] that the asymptotic symmetry group of quantum gravity in dS3 is the Euclidean conformal group in two dimensions. This has led to the ...
How to create a universe - Philsci
... 8. Specify cosmological parameters corresponding to the initial conditions for the universe. This list is based upon the understanding gleaned from general relativistic cosmology and the standard model of particle physics, the latter being an application of quantum field theory. Both these theories ...
... 8. Specify cosmological parameters corresponding to the initial conditions for the universe. This list is based upon the understanding gleaned from general relativistic cosmology and the standard model of particle physics, the latter being an application of quantum field theory. Both these theories ...
EVIDENCE FOR BINARY ORBITAL MOTION OF A QUASAR
... cover the 15 yr period 1974 –1988. Up until mid-1984, the observations were made with various Robinson-Wampler image dissector scanner (IDS) spectrograph systems; after mid1984, observations were made with a CCD spectrograph. The majority of the Lick spectra are of the Hb region. Veilleux & Zheng (1 ...
... cover the 15 yr period 1974 –1988. Up until mid-1984, the observations were made with various Robinson-Wampler image dissector scanner (IDS) spectrograph systems; after mid1984, observations were made with a CCD spectrograph. The majority of the Lick spectra are of the Hb region. Veilleux & Zheng (1 ...
Quantum hair on black holes
... conditions. For spacelike singularities such as those which occur for conventional black holes, however, boundary conditions would amount to constraints on the form of the wave function, which are presumably not physically sensible. (How does the initial wave function know it is going to describe co ...
... conditions. For spacelike singularities such as those which occur for conventional black holes, however, boundary conditions would amount to constraints on the form of the wave function, which are presumably not physically sensible. (How does the initial wave function know it is going to describe co ...
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.