ar X iv : a st ro - p h / 01 10 35 8 v 1 1 6 O ct 2 00 1 FUSE Observations towards HD 34078 : Detection of highly excited

ar X iv : a st ro - p h / 01 10 11 3 v 1 4 O ct 2 00 1 Small scale structure in diffuse molecular gas from repeated FUSE and visible spectra of HD 34078

We present preliminary results from an ongoing program devoted to a study of small scale structure in the spatial distribution of molecular gas. Our work is based on multi-epoch FUSE and visible observations of HD34078. A detailed comparison of H2, CH and CH + absorption lines is performed. No short term variations are seen (except for highly excited H2) but long-term changes in N(CH) are clear...

ar X iv : a st ro - p h / 01 10 35 8 v 2 1 9 O ct 2 00 1

We present FUSE observations of the extincted O9.5 star, HD 34078. The 19 first levels of H2 are detected (i.e. from J=0 to v=1, J=5) as well as HD in its two first levels. The excitation of H2 up to J=7 can be explained using a combination of Photon Dominated Region (PDR) and MHD shock models. However, understanding the large amount of H2 found in higher excitation states seems to require more...

ar X iv : a st ro - p h / 01 10 65 9 v 1 3 0 O ct 2 00 1 Probing the OVI forest

Recent FUSE and STIS observations of O vi absorption at low redshift along the sightline to distant quasars have been interpreted as the signature of a warm-hot diffuse component of the intergalactic medium (IGM). In these proceedings we show that the predicted numbers of such absorbers in numerical simulations agree with the observed characteristics, lending support to this idea. We find that ...

ar X iv : a st ro - p h / 06 10 24 6 v 1 9 O ct 2 00 6 Special Features of Galactic Dynamics

ar X iv : a st ro - p h / 06 10 94 5 v 1 3 1 O ct 2 00 6 First results of galactic observations with MAGIC

During its first cycle, the MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescope was performing an observational campaign covering a total of about 250 hours on galactic sources. Here we review the results for the very high energy (> 100 GeV) γ-ray emission from some of those sources.