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The halo occupation distribution (HOD) describes the bias between galaxies and dark matter by specifying (1) the probability P(N|M) that a halo of virial mass M contains N galaxies of a particular cla...
Professor Sara Seager,The Massachusetts Institute of Technology Department of Physics（图）
Professor Sara Seager The Massachusetts Institute of Technology Department of Physics Astrophysics Planets & Brown Dwarfs
2014/8/19
Sara Seager,Title(s): Class of 1941 Professor of Physics and Planetary Science,Email: seager@mit.edu,Phone: (617) 253-6775,Assistant: Robyn Jepson (617) 324-2029,Address:Massachusetts Institute of Tec...
Fundamental Physics and Relativistic Laboratory Astrophysics with Extreme Power Lasers
Fundamental Physics Relativistic Laboratory Astrophysics Extreme Power Lasers
2012/2/23
The prospects of using extreme relativistic laser-matter interactions for laboratory astrophysics are discussed. Laser-driven process simulation of matter dynamics at ultra-high energy density is prop...
Revealing the physics of r-modes in low-mass X-ray binaries
Revealing the physics of r-modes in low-mass X-ray binaries
2011/10/21
We consider the astrophysical constraints on the gravitational-wave driven r-mode instability in accreting neutron stars in low-mass X-ray binaries. We use recent results on superfluid and superconduc...
IceCube as a discovery observatory for physics beyond the standard model
IceCube as a discovery observatory for physics beyond the standard model
2011/10/14
Construction of the cubic-kilometer neutrino detector IceCube at the South Pole has been completed in December 2010. It forms a lattice of 5160 photomultiplier tubes monitoring a gigaton of the deep A...
Gauging away Physics
Gauging Physics
2011/10/14
We consider the recent argument by Higuchi, Marolf and Morrison [1] that a nonlocal gauge transformation can be used to eliminate the infrared divergence of the graviton propagator, when evaluated in ...
Constraining GRB Emission Physics with Extensive Early-Time, Multiband Follow-up
Constraining Emission Physics Extensive Early-Time Multiband Follow-up
2011/10/10
Understanding the origin and diversity of emission processes responsible for Gamma-ray Bursts (GRBs) remains a pressing challenge. While prompt and contemporaneous panchromatic observations have the p...
IceCube as a three-dimensional air-shower array covers an energy range of the cosmic-ray spectrum from below 1 PeV to approximately 1 EeV. This talk is a brief review of the function and goals of IceT...
Lepton flavor violating New Physics and supernova explosion
Lepton flavor violating New Physics supernova explosion
2011/1/13
Electrons and electron neutrinos in the inner core of the core-collapse supernova are highly degenerate and therefore numerous during a few seconds of explosion. In contrast, leptons of other flavors ...
The Physics of Disk Winds, Jets,and X-ray Variability in GRS 1915+105
Disk Winds Jets X-ray Variability
2011/1/11
We present new insights about accretion and ejection physics based on joint RXTE/Chandra HETGS studies of rapid X-ray variability in GRS 1915+105. For the first time, with fast phase-resolved spectros...
Tilted Physics: A Cosmologically Dipole-Modulated Sky
Tilted Physics Cosmologically Dipole-Modulated Sky
2010/11/15
Physical constants and cosmological parameters could vary with position. On the largest scales
such variations would manifest themselves as gradients across our Hubble volume, leading to dipole-modul...
Ultraviolet Coronagraph Spectroscopy: A Key Capability for Understanding the Physics of Solar Wind Acceleration
Ultraviolet Coronagraph Spectroscopy Physics of Solar Wind Acceleration
2010/11/15
Understanding the physical processes responsible for accelerating the solar wind requires detailed measurements of the collisionless plasma in the extended solar corona. Some key clues about these pro...
Recent results from the CoGeNT collaboration (as well as the annual modulation reported by
DAMA/LIBRA) point toward dark matter with a light (5 10 GeV) mass and a relatively large
elastic...
In this article we give a brief review of the fundamental physics that can be done with the future space-based gravitational wave detector LISA. This includes detection of gravitational wave bursts co...
Blazar jet physics in the age of Fermi
galaxies: jets gamma rays observations gamma rays theory
2010/11/9
The impact of the Fermi Gamma-ray Space Telescope on blazar research is reviewed. This
includes a brief description of the Fermi Large Area Telescope, a summary of the various classes of extragalacti...