ar X iv : a st ro - p h / 04 02 15 6 v 1 6 F eb 2 00 4 Far – IR spectroscopy towards Sagittarius B 2

ar X iv : a st ro - p h / 04 02 01 1 v 1 1 F eb 2 00 4 OH Absorption in the Line of Sight Towards

The giant molecular cloud complex, Sagittarius B2 (Sgr B2), was observed with the ISO Long Wavelength Spectrometer over the range 47–197 μm. The ground state rotational transitions of OH lie in the survey range and we have analysed results from the OH, OH and OH isotopomers. Absorption in these lines due to clouds along the line of sight towards Sgr B2 has allowed us to compare the isotopomer a...

ar X iv : a st ro - p h / 04 02 10 6 v 1 4 F eb 2 00 4 Probing Sgr A * with theory of large masses without events horizon

In the present paper some consequences of the assumption that in the center of the Galaxy there is a supermassive compact object without the events horizon are considered. The possibility of existence of such object has been argued earlier. It is shown, that accretion of a surrounding gas onto the object can cause nuclear burning in a superficial layer which owing to comptonization in a hotter ...

ar X iv : a st ro - p h / 02 04 03 6 v 1 2 A pr 2 00 2 Investigating the Flame Microstructure in Type

ar X iv : a st ro - p h / 04 02 16 8 v 1 7 F eb 2 00 4 A search for wide ( sub ) stellar companions around extrasolar planet host stars

We present an overview of our ongoing systematic search for wide (sub)stellar companions around the stars known to host rad-vel planets. By using a relatively large field of view and going very deep, our survey can find all directly detectable stellar and massive brown dwarf companions (m>40 MJup) within a 1000 AU orbit.

ar X iv : a st ro - p h / 99 02 06 2 v 1 4 F eb 1 99 9 SOURCES OF RELATIVISTIC JETS IN THE GALAXY