The 1.0 metre f/4 fast-slew Zadko Telescope was installed in June 2008 approximately seventy kilometres north of Perth at Yeal, the Shire Gingin, Western Australia. Since has been operation it proven its worth by detecting numerous Gamma Ray Burst afterglows, two these being most distant `optical transients' imaged an Australian telescope. Other projects include a contract with European Space A...

We present time resolved optical data acquired by the TAROT automated observatory on the afterglow of GRB 050525a from 6 to 136 min after the GRB. We find evidence for a rapid re-brightening of 0.65 mag of the afterglow at ∼33 min after the GRB. The decay slope α is 1.14 ± 0.07 in the first part and is 1.23 ± 0.27 after the re-brightening event. The afterglow of GRB 050525a is the third known a...

This paper covers “soft measures” that can be used in a “stick and carrot” strategy to improve accessibility to web sites. Two examples of benchmarking are presented. The first is the benchmarking of 700 Norwegian public web sites that has been carried out three times the last years, giving experiences on how to carry out the analyses and how to use the results for awareness raising and stimula...

Aims. We investigate whether sunspot regions that emerge near existing ones are more flare productive than those that emerge isolated. Methods. We analyse a sample of 2115 new regions obtained from the USAF/Mount Wilson catalogue of sunspot regions. For our analysis we use AstroGrid, a Virtual Observatory developed in the UK, to build a series of workflows that perform queries to catalogues of ...