Context. The microquasar GX 339-4 experienced a new outburst in 2010: it was observed simultaneously at various wavelengths from radio up to soft γ-rays. We focus on observations that are quasi-simultaneous with those made with the INTEGRAL and RXTE satellites: these were collected in 2010 March-April during our INTEGRAL target of opportunity

As part of an extensive study of the physical properties of active galactic nuclei (AGNs) we report high spatial resolution near-IR integral-field spectroscopy of the narrow-line region (NLR) and coronal-line region (CLR) of seven Seyfert galaxies. These measurements elucidate for the first time the two-dimensional spatial distribution and

We present an optical and FIR analysis of a sample of 65 Lyα emitters at 2.0˜

Using optical-optical and optical-NIR colors, we analyze the radial dependence of age and metallicity inside massive (M sstarf >~ 1010.5 M sun), low-redshift (z 0.1), early-type galaxies (ETGs), residing in both high-density group regions and the field. On average, internal color gradients of ETGs are mainly driven by metallicity, consistent with

Comet 29P/Schwassmann-Wachmann 1 (hereafter SW1) is a primitive Centaur that exhibits continuous changes in its coma appearance and brightness [1]. Our team has recently completed a decade of photometric monitoring in order to infer the physicochemical processes behind the observed activity.

The flat-spectrum radio quasar PKS 1222+216 (4C+21.35, z = 0.432) was detected in the very high energy γ-ray band by MAGIC during a highly active γ-ray phase following an alert by the Large Area Telescope (LAT) onboard Fermi. Its relatively hard spectrum (70-400 GeV photon index Γ = 2.7 ± 0.3) without a cut off, together with its observed