output
19912026
researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 1996 · astro-phShow all

13 papers · 2 filters

astro-ph1996

The Great Annihilator 1E1740.7-2942: Molecular cloud connection and coronal structure

O. Vilhu, D. Hannikainen, P. Muhli +4

Using 12CO and 13CO observations we present column density maps of the molecular cloud (V = -135 km/s) in the direction of 1E1740.7-2942. Hydrogen column densities of the cloud sca…

astro-ph1996★ 1 cited

The Amanda Experiment

P. O. Hulth, :, The AMANDA Collaboration

At the AMANDA South Pole site, four new holes were drilled to depths 2050 m to 2180 m and instrumented with 86 photomultipliers (PMTs) at depths 1520-2000 m. Of these PMTs 79 are w…

astro-ph1996★ 1 cited

Modeling the Mass Distribution in Spiral Galaxies

Adrick H. Broeils, Stephane Courteau

We use deep r-band photometry and Halpha rotation curves for a sample of 290 late-type spirals to model their mass distribution within the optical radius. We examine luminosity pro…

astro-ph1996★ 2 cited

Supernova progenitor constraints from circumstellar interaction: Type II

Robert J. Cumming, Peter Lundqvist

All types of supernovae (SNe), except Type Ia, have been observed to interact with their immediate circumstellar medium (CSM). This interaction can reveal their progenitor's histor…

astro-ph1996★ 1 cited

Supernova progenitor constraints from circumstellar interaction: Type Ia

Peter Lundqvist, Robert J. Cumming

Searching for the presence of a circumstellar medium is a direct observational way to discriminate between different types of progenitor systems for Type Ia supernovae. We have mod…

astro-ph1996★ 96 cited

Distortion of the acoustic peaks in the CMBR due to a primordial magnetic field

Jenni Adams, Ulf H. Danielsson, Dario Grasso +1

In this paper we study the effect of a magnetic field on the fluctuation spectrum of the cosmic microwave background. We find that upcoming measurements might give interesting boun…

astro-ph1996★ 1.6k cited

Measurements of the Cosmological Parameters Omega and Lambda from the First 7 Supernovae at z >= 0.35

S. Perlmutter, S. Gabi, G. Goldhaber +21

We have developed a technique to systematically discover and study high-redshift supernovae that can be used to measure the cosmological parameters. We report here results based on…

astro-ph1996★ 1 cited

A simple formula for the thermal pair annihilation line emissivity

Roland Svensson, Stefan Larsson, Juri Poutanen

We introduce a simple and convenient fitting formula for the thermal annihilation line from pair plasmas in cosmic sources. The fitting formula is accurate to 0.04\% and is valid a…

astro-ph1996★ 89 cited

The Type Ia Supernova Rate at z

R. Pain, I. M. Hook, S. Deustua +17

We present the first measurement of the rate of Type Ia supernovae at high redshift. The result is derived using a large subset of data from the Supernova Cosmology Project. Three…

astro-ph1996★ 2 cited

Models of X-ray and gamma-ray emission from Seyfert galaxies

Roland Svensson

X-ray and gamma-ray observations of Seyfert 1 galaxies are briefly reviewed. Both thermal and non-thermal model for X-ray and gamma-ray emission are discussed. Particular attention…

astro-ph1996★ 7 cited

Cosmological Bounds to the Magnetic Moment of Heavy Tau Neutrinos

Dario Grasso, Edward W. Kolb

The magnetic moment of tau neutrinos in the MeV mass range may be large enough to modify the cosmological freeze-out calculation and determine the tau-neutrino relic density. In th…

astro-ph1996★ 1 cited

The Type Ia Supernova Rate at z ~ 0.4

R. Pain, I. Hook, S. Perlmutter +23

We present the first measurement of the rate of Type Ia supernovae at high redshift. The result is derived using a large subset of data from the Supernova Cosmology Project as desc…

astro-ph1996★ 101 cited

Revisiting Nucleosynthesis Constraints on Primordial Magnetic Fields

D. Grasso, H. R. Rubinstein

In view of several conflicting results, we reanalyze the effects of magnetic fields on the primordial nucleosynthesis. In the case the magnetic field is homogeneous over a horizon…