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19932026
most citedAstropy: A Community Python Package for Astronomy

14.6k citations

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111 papers · 1 filter

math-ph2000

Recursive Construction for a Class of Radial Functions II - Superspace

Th. Guhr, H. Kohler

We extend the recursion formula for matrix Bessel functions, which we obtained previously, to superspace. It is sufficient to do this for the unitary orthosymplectic supergroup. By…

astro-ph2000

Search for a TeV gamma-ray halo of Mkn 501

HEGRA Collaboration, F. Aharonian

For distant extragalactic sources of gamma-rays in the PeV energy range, interactions of the gamma rays with intergalactic diffuse radiation fields will initiate a pair cascade. De…

quant-ph2000★ 212 cited

The Chirality of Exceptional Points

W. D. Heiss, H. L. Harney

Exceptional points are singularities of the spectrum and wave functions which occur in connection with level repulsion. They are accessible in experiments using dissipative systems…

astro-ph2000★ 49 cited

Gamma Rays from Molecular Clouds

F. A. Aharonian

I discuss the spectral features of pi-0 decay gamma-radiation from clouds/targets located in proximity of relatively young proton accelerators, and speculate that such ``accelerato…

astro-ph2000

Cosmic Dust: The Ulysses perspective

Eberhard Grün, Harald Krüger, Markus Landgraf

The Ulysses spacecraft, launched in October 1990, orbits the Sun on a polar trajectory. The spacecraft is equipped with a highly sensitive impact- ionization dust detector which ca…

hep-ph2000★ 1 cited

From Hard to Soft Diffraction and Return

B. Z. Kopeliovich

The long standing mystery of smallness of diffractive dissociation of hadrons to large effective masses (the Pomeron-proton cross section is only 2 mb) witnesses that the gluonic c…

hep-ex2000★ 62 cited

GENIUS-TF: a test facility for the GENIUS project

L. Baudis, A. Dietz, G. Heusser +3

GENIUS is a proposal for a large scale detector of rare events. As a first step of the experiment, a small test version, the GENIUS test facility, will be build up at the Laborator…

cond-mat2000★ 5 cited

Atomic Deuterium Adsorbed on the Surface of Liquid Helium

A. P. Mosk, M. W. Reynolds, T. W. Hijmans

We investigate deuterium atoms adsorbed on the surface of liquid helium in equilibrium with a vapor of atoms of the same species. These atoms are studied by a sensitive optical met…

hep-ph2000★ 20 cited

Polarized Proton Nucleus Scattering

B. Z. Kopeliovich, T. L. Trueman

We show that, to a very good approximation, the ratio of the spin-flip to the non-flip parts of the elastic proton-nucleus amplitude is the same as for proton-nucleon scattering at…

astro-ph2000★ 64 cited

Reanalysis of the high energy cutoff of the 1997 Mkn 501 TeV energy spectrum

HEGRA Collaboration, F. Aharonian

Data taken with the HEGRA system of imaging atmospheric Cherenkov telescopes during the 1997 flares of Mkn 501 are reanalyzed using an algorithm providing improved energy resolutio…

hep-ph2000

Recent Developments in Supersymmetric Dark Matter

Achille Corsetti, Pran Nath

A brief review is given of some of the recent developments in the theoretical analyses of supersymmetric dark matter. These include the effects of uncertainties in the wimp velocit…

hep-ph2000

Bootstrap quark model and spectra masses, electromagnetic properties of low-lying hadrons

S. M. Gerasyuta, S. Bielefeld

The paper is devoted to the construction of low-energy quark scattering amplitudes. Bootstrap quark model allows to describe the light and heavy hadron spectroscopy based on three…

hep-ph2000★ 46 cited

Update of the direct detection of dark matter and the role of the nuclear spin

V. A. Bednyakov, H. V. Klapdor-Kleingrothaus

We update our exploration of the MSSM parameter space at the weak scale where new accelerator and cosmological constraints are respected. The dependence of WIMP-nucleon cross secti…

astro-ph2000★ 1 cited

Stereo Imaging of the VHE Gamma-Rays with HEGRA and H.E.S.S

Alexander K Konopelko

At present, the ground-based astronomy of very high energy (VHE) (E>100 GeV) gamma-rays experiences the challenging transition phase caused by the substantial upgrading of its obse…

math-ph2000★ 1 cited

Recursive Construction for a Class of Radial Functions I - Ordinary Space

Thomas Guhr, Heiner Kohler

A class of spherical functions is studied which can be viewed as the matrix generalization of Bessel functions. We derive a recursive structure for these functions. We show that th…

hep-lat2000★ 4 cited

Spectra of massive QCD Dirac Operators from Random Matrix Theory: all three chiral symmetry breaking patterns

G. Akemann, E. Kanzieper

The microscopic spectral eigenvalue correlations of QCD Dirac operators in the presence of dynamical fermions are calculated within the framework of Random Matrix Theory (RMT). Our…

hep-ph2000★ 26 cited

The Coulomb Phase Revisited

B. Z. Kopeliovich, A. V. Tarasov

Motivated by the forthcoming data from the E950 experiment at BNL for small angle polarized proton-carbon scattering we revisit the problem of Coulomb phase. The approximation usua…

hep-th2000★ 32 cited

QCD3 and the Replica Method

G. Akemann, D. Dalmazi, P. H. Damgaard +1

Using the replica method, we analyze the mass dependence of the QCD3 partition function in a parameter range where the leading contribution is from the zero momentum Goldstone fiel…

nucl-th2000★ 17 cited

Double-beta decay matrix elements for Ge-76

S. Stoica, H. V. Klapdor-Kleingrothaus

Double-beta decay matrix elements (ME) for are calculated with different quasi random phase approximation (QRPA)-based methods. First, the ME for the two-neutrino mode ar…

hep-ph2000★ 5 cited

Excitation of Color Degrees of Freedom of Nuclear Matter and Suppression

Jörg Hüfner, Boris Z. Kopeliovich, Alberto Polleri

In high energy nuclear collisions, the conventional Glauber model is commonly used to evaluate the contribution to suppression originating from the inelastic interaction with…

cond-mat.stat-mech2000★ 52 cited

Fractional transport equations for Levy stable processes

E. Lutz

The influence functional method of Feynman and Vernon is used to obtain a quantum master equation for a Brownian system subjected to a Levy stable random force. The corresponding c…

hep-ex2000★ 52 cited

Energy loss of fast quarks in nuclei

M. B. Johnson, B. Z. Kopeliovich, I. K. Potashnikova +22

We report an analysis of the nuclear dependence of the yield of Drell-Yan dimuons from the 800 GeV/c proton bombardment of , C, Ca, Fe, and W targets. Employing a new formulat…

nucl-ex2000★ 13 cited

Potential and limitations of nucleon transfer experiments with radioactive beams at REX-ISOLDE

C. Gund, H. Bauer, J. Cub +8

As a tool for studying the structure of nuclei far off stability the technique of gamma-ray spectroscopy after low-energy single-nucleon transfer reactions with radioactive nuclear…

hep-ex2000★ 33 cited

Precision measurements of the Lambda_c+ and D0 lifetimes

The SELEX collaboration, A. Kushnirenko

We report new precision measurements of the lifetimes of the Lambda_c+ and D0 from SELEX, the charm hadro-production experiment at Fermilab. Based upon 1630 Lambda_c+ and 10210 D0…