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19922026
most citedFirst Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance

2.7k citations

Showing 2004 · astro-phShow all

12 papers · 2 filters

astro-ph2004

Exploring Properties of Dark and Visible Mass Distribution on Different Scales in the Universe

Yuriy Mishchenko, Chung-Ryong Ji

In this short note we discuss recent observation of linear correlation on log-log scale between distribution of dark and visible mass in gravitationally bound systems. The coeffici…

astro-ph2004★ 21 cited

Neutrino Scattering, Absorption and Annihilation above the accretion disks of Gamma Ray Bursts

J. P. Kneller, G. C. McLaughlin, R. Surman

The central engine that drives gamma ray burst (GRB) explosions may derive from the ability of electrons/positrons and nucleons to tap into the momentum and energy from the large n…

astro-ph2004★ 55 cited

INTEGRAL/SPI Limits on Electron-Positron Annihilation Radiation from the Galactic Plane

B. J. Teegarden, K. Watanabe, P. Jean +24

The center of our Galaxy is a known strong source of electron-positron 511-keV annihilation radiation. Thus far, however, there have been no reliable detections of annihilation rad…

astro-ph2004★ 54 cited

Neutrino Emission from Ungapped Quark Matter

Thomas Schafer, Kai Schwenzer

We study neutrino emission from a normal, ungapped, quark phase in the core of a compact star. Neutrino emission from non-interacting quark matter leads to an emissivity that scale…

astro-ph2004★ 262 cited

A Million-Second Chandra View of Cassiopeia A

Una Hwang, J. Martin Laming, Carles Badenes +20

We introduce a million-second observation of the supernova remnant Cassiopeia A with the Chandra X-ray Observatory. The bipolar structure of the Si-rich ejecta (NE jet and SW count…

astro-ph2004★ 67 cited

Nonlinear Particle Acceleration at Reverse Shocks in Supernova Remnants

Donald C. Ellison, Anne Decourchelle, Jean Ballet

Without amplification, magnetic fields in expanding ejecta of young supernova remnants (SNRs) will be orders of magnitude below those required to shock accelerate thermal electrons…

astro-ph2004★ 95 cited

Diffusive Shock Acceleration in Unmodified Relativistic, Oblique Shocks

Donald C. Ellison, Glen P. Double

We present results from a fully relativistic Monte Carlo simulation of diffusive shock acceleration (DSA) in unmodified shocks. The computer code uses a single algorithmic sequence…

astro-ph2004★ 52 cited

Prospects for obtaining an r-process from Gamma Ray Burst Disk Winds

G. C. McLaughlin, R. Surman

We discuss the possibility that r-process nucleosynthesis may occur in the winds from gamma ray burst accretion disks. This can happen if the temperature of the disk is sufficientl…

astro-ph2004★ 43 cited

Neutrino Interactions in the Outflow from Gamma-Ray Burst Accretion Disks

R. Surman, G. C. McLaughlin

We examine the composition of matter as it flows away from gamma ray burst accretion disks, in order to determine what sort of nucleosynthesis may occur. Since there is a large flu…

astro-ph2004★ 96 cited

BBN For Pedestrians

James P. Kneller, Gary Steigman

The simplest, `standard' model of Big Bang Nucleosynthesis (SBBN) assumes three light neutrinos (N_nu = 3) and no significant electron neutrino asymmetry, leaving only one adjustab…

astro-ph2004★ 95 cited

Magnetic Rayleigh-Taylor instability for Pulsar Wind Nebulae in expanding Supernova Remnants

N. Bucciantini, E. Amato, R. Bandiera +2

We present a numerical investigation of the development of Rayleigh-Taylor instability at the interface between an expanding Pulsar Wind Nebula and its surrounding Supernova Remnan…

astro-ph2004★ 42 cited

The effects of spin-down on the structure and evolution of pulsar wind nebulae

N. Bucciantini, R. Bandiera, J. M. Blondin +2

We present high resolution spherically symmetric relativistic magnetohydrodynamical simulations of the evolution of a pulsar wind nebula inside the free expanding ejecta of the sup…