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The effects of X-ray absorption variability in NGC 4395
galaxies: active – galaxies: individual: NGC 4395 – X-rays: galaxies
2011/10/8
We present a new X-ray analysis of the dwarf Seyfert galaxy NGC 4395, based on two archival XMM-Newton and Suzaku observations. This source is well known for a series of remarkable properties: one of ...
Gamma Ray Burst origin and their afterglow: story of a discovery and more
Burst origin afterglow: story discovery more
2011/9/29
In this paper we review the story of the BeppoSAX discovery of the Gamma Ray Burst afterglow and their cosmological distance, starting from their first detection with Vela satellites and from the effo...
Long gamma-ray burst prompt emission properties as a cosmological tool
Long gamma-ray burst cosmological tool
2009/7/9
Long gamma-ray burst prompt emission properties as a cosmological tool。