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High resolution science with high redshift galaxies
Hathi, N. P.; Jansen, R. A.; Driver, S. P. +4 more
We summarize the high-resolution science that has been done on high redshift galaxies with Adaptive Optics (AO) on the world’s largest ground-based facilities and with the Hubble Space Telescope (HST). These facilities complement each other. Ground-based AO provides better light gathering power and in principle better resolution than HST, giving i…
Modeling Pulsar Wind Nebulae
Bucciantini, N.
In the last few years, new observations by CHANDRA and XMM have shown that Pulsar Wind Nebulae present complex but similar inner features, with the presence of axisymmetric rings and jets, which are generally referred to as a jet-torus structure. Due to the rapid growth in accuracy and robustness of numerical schemes for relativistic fluid-dynamic…
Observational appearances of isolated stellar-mass black hole accretion Theory and observations
Karpov, S.; Beskin, G.; Biryukov, A. +2 more
General properties of accretion onto isolated stellar-mass black holes in the Galaxy are discussed. An analysis of plasma internal energy growth during the infall is performed. Adiabatic heating of collisionless accretion flow due to magnetic adiabatic invariant conservation is 25% more efficient than in the standard non-magnetized gas case. It is…
QSO number counts to B < 24.5 from hubble space telescope WFPC2 images
Anderson, Scott F.; Beck-Winchatz, Bernhard
We have conducted a survey for faint quasars to B < 24.5, z < 2.1 based on archival high-latitude Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) images covering 0.04 deg2 of the sky in three filters spanning 2300 9600 Å. Taking advantage of the superb 0.1″ resolution of WFPC2, we have developed an approach to select …