An improved error box of GRB 970815 has been reported very recently (Smith et al.1999). This error box is consistent with the decaying X-ray source detected by...
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PublicationPhotometric study of the improved GRB 970815 error box
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PublicationProbing quantum gravity using photons from a flare of the active galactic nucleus Markarian 501 observed by the MAGIC telescope
We analyze the timing of photons observed by the MAGIC telescope during a flare of the active galactic nucleus Mkn 501 for a possible correlation with energy...
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PublicationPrompt Comparison of Data for Optical Transients of Gamma-Ray Bursts
The prompt information given by the GRB Coordinates Network (GCN) differs very much for different GRBs. We compare the optical magnitudes quoted in GCNs for...
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PublicationRadio to γ-ray observations of 3C 454.3:1993-1995
Results from a multiwaveband study of the γ-ray-bright compact radio source 3C 454.3 are presented.
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PublicationRecent optical/near-IR observations of GRBs
We present the results of optical/near-IR observations carried out in the period Dec 1998-Dec 1999 at Spanish, Indian and New Zealand observatories. Most of the...
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NewsSAMUEL TING: “If we find complete agreement with the theory, we don’t learn anything”
“I still remember the surface of the Moon seen from the Teide Observatory”. He will never forget the image: Sharp, close up, and brilliant. It was the first...
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NewsTakaaki Kajita: “The detection of gamma-rays with the CTA will be the key to discovering new sources of neutrino emission”
The Japanese physicist Takaaki Kajita is one of the leading world experts in neutrino physics. These particles have a very tiny mass, and they hardly interact...
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PublicationThe Epeakrest E correlation in GRBs in the BATSE catalog
The energy emission involved in a Gamma-Ray Burst evidently can be estimated only provided that we know the distance to the source. The same is true for the...
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NewsThe Gran Telescopio Canarias finds the farthest black hole that belongs to a rare family of galaxies
An international team of astronomers has identified one of the rarest known classes of gamma-ray emitting galaxies, called BL Lacertae, within the first 2...