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STIS Near Ultraviolet Time-Tagged Spectra of the Crab Pulsar
Theodore R. Gull, Don J. Lindler, D. Michael Crenshaw +8
We present the spectrum and pulse profile of the Crab Pulsar in the near ultraviolet (1600-3200 Angstroms) observed with the Space Telescope Imaging Spectrograph (STIS) during the…
Photo-evaporation of clumps in Planetary Nebulae
Garrelt Mellema, Alejandro C. Raga, Jorge Canto +4
We study the evolution of dense neutral clumps located in the outer parts of planetary nebulae. These clumps will be photo-ionized by the ionizing radiation from the central star a…
Molecular absorption lines at high redshift: PKS1413+135 (z=0.247)
Tommy Wiklind, Francoise Combes
A detailed study of the absorbing molecular clouds towards the radio source PKS1413+135, at a redshift z=0.247, is reported. Physical conditions are derived for the molecular gas i…
A Generalization of the Brodsky-Lepage Formalism
L. Houra-Yaou, P. Kessler, J. Parisi +2
We present an approach that generalizes in a natural way the perturbative QCD formalism developed by Brodsky and Lepage for the study of exclusive hadronic processes to the case of…
Interaction-Free Measurements, Atom Localisation and Complementarity
Anders Karlsson, Gunnar Bjork, Erik Forsberg
We analyse interaction-free measurements on classical and quantum objects. We show the transition from a classical interaction free measurement to a quantum non-demolition measurem…
Hydrodynamic collimation of YSO jets
Adam Frank, Garrelt Mellema
We present the results of numerical hydrodynamic models for the collimation of outflows from young stellar objects. We show that the presence of a toroidal environment can lead to…