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20 papers · 1 filter
X-Ray Sources Overdensity Around the 3C 295 Galaxy Cluster
V. D'Elia, F. Fiore, M. Elvis +4
We present a statistical analysis of the Chandra observation of the source field around the 3C 295 galaxy cluster (). The logN-logS of this field is in good agreement with…
X-Ray Spectral Variability of Extreme BL Lac AGN H1426+428
A. D. Falcone, W. Cui, J. P. Finley
Between 7 March 2002 and 15 June 2002, intensive X-ray observations were carried out on the extreme BL Lac object H1426+428 with instruments on board the Rossi X-ray Timing Explore…
The ROSAT North Ecliptic Pole Survey: The Optical Identifications
I. M. Gioia, J. P. Henry, C. R. Mullis +4
The X-ray data around the North Ecliptic Pole (NEP) of the ROSAT All Sky Survey have been used to construct a contiguous area survey consisting of a sample of 445 individual X-ray…
Atmosphere-Corrected Phase-Referencing
A. Brunthaler, M. J. Reid, H. Falcke
One major problem of phase-referencing VLBI observations are phase errors due to the unknown tropospheric zenith delay at each antenna. These errors degrade the quality of the phas…
A radio jet in the prototypical symbiotic star Z And?
C. Brocksopp, J. L. Sokoloski, C. Kaiser +3
As part of a multi-wavelength campaign to observe the 2000--2002 outburst of the prototypical symbiotic star Z Andromedae, we observed this object six times each with the Multi-Ele…
Quasi-one-dimensional Bose gases with large scattering length
G. E. Astrakharchik, D. Blume, S. Giorgini +1
Bose gases confined in highly-elongated harmonic traps are investigated over a wide range of interaction strengths using quantum Monte Carlo techniques. We find that the properties…