activity
19952008
most citedHigh-precision wavelength calibration of astronomical spectrographs with laser frequency combs

332 citations · 576 across the 24 of their papers we have counts for

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Showing 1998Show all

6 papers · 1 filter

astro-ph1998

Restrictions on the parameters of boundary layer and accretion disk of X-ray bursters in the low state

M. Revnivtsev, M. Gilfanov, E. Churazov +1

Using ASCA observations of several X-ray bursters in the low spectral state Lx~1-5x10^{36} erg/s) restrictions on the parameters of the accretion disk and the boundary layer were o…

astro-ph1998

Intergalactic H_2 Photodissociation and the Soft UV Background Produced by Population III Objects

Benedetta Ciardi, Andrea Ferrara, Tom Abel

We study the effects of the ionizing and dissociating photons produced by PopIII objects on the surrounding intergalactic medium. We find that the typical size of a H_2 photodissoc…

astro-ph1998

Natural Polarization Modes in Pulsar Magnetospheres

Alexis von Hoensbroech, Harald Lesch, Thomas Kunzl

We present a comprehensive investigation of the radio polarization properties within the theory of natural electromagnetic wave modes in pulsar magnetospheres. Taking into account…

astro-ph1998

High resolution imaging of the X-ray afterglow of GRB970228 with ROSAT

F. Frontera, J. Greiner, L. A. Antonelli +6

We report results of a ROSAT High-Resolution Imager (HRI) observation of the X-ray error box given by the BeppoSAX Wide Field Camera for the gamma-ray burst that occurred on 1997 F…

astro-ph1998

Entropy-regularized Maximum-Likelihood cluster mass reconstruction

Stella Seitz, Peter Schneider, Matthias Bartelmann

We present a new method for reconstructing two-dimensional mass maps of galaxy clusters from the image distortion of background galaxies. In contrast to most previous approaches, w…

astro-ph1998

A new finite-field mass reconstruction algorithm

Stella Seitz, Peter Schneider

A new method for the reconstruction of the projected mass distribution of clusters of galaxies from the image distortion of background galaxies is discussed. This method is essenti…