Browsing Externally hosted open access publications with NUI Galway authors (1) by Subject "lacertae object markarian-421"
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(IOP Publishing, 1999-12-01)Mrk 421 was observed for about 2 days with BeppoSAX in 1998 April as part of a worldwide multiwavelength campaign. A large, well-defined flare was observed in X-rays. The same flare was observed simultaneously at TeV ...