We present a detailed X-ray spectral analysis of the sources in the 1Ms catalog of the Chandra Deep Field South (CDFS) taking advantage of optical spectroscopy and photometric redshifts for 321 extragalactic sources out of the total sample of 347 sources. As a default spectral model, we adopt a power law with slope Γ with an intrinsic redshifted

Several condensations heated externally by nearby hot stars are present in the Sgr B2 region for which H2O far-IR lines are expected to probe only an external low-density and high temperature section. Millimeter-wave lines can penetrate deeper into them (higher densities and lower Tk). We have conducted a study combining H2O lines in both spectral

We present high spatial resolution near-infrared spectra and images of the nucleus of Centaurus A (NGC 5128) obtained with NAOS-CONICA at the VLT. The adaptive optics-corrected data have a spatial resolution of 0.06" (FWHM) in K and 0.11" in H band, 4 times higher than previous studies. The kinematics of the ionized gas ([Fe II]) are mapped along

The WMAP results on the scalar spectral index n and its running with scale, though preliminary, open a very interesting window to physics at very high energies. We address the problem of finding simple inflaton potentials well motivated by particle physics which can accommodate WMAP data.

We present multiwavelength observations of the latest two GRB detected by Hete-2 in 2005. For GRB 051022, no optical/nIR afterglow has been detected, in spite of the strong gamma-ray emission and the reported X-ray afterglow discovered by Swift. A mm afterglow was discovered at PdB confirming the association of this event with a luminous (MV = - 21

We propose to take 5-37 micron IRS spectra of heavily obscured transition objects evolving from the Asymptotic Giant Branch (AGB) to the Planetary Nebula (PN) stage. The sample contains a complete flux-limited sample selected by IRAS colors. Their strong obscuration makes them optically invisible and some of them are not even detectable in the near