Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3377....1s&link_type=abstract
The Astronomer's Telegram, #3377
Astronomy and Astrophysics
Astronomy
Optical, Ultra-Violet, X-Ray, Agn, Blazar
Scientific paper
Following the increase in gamma-ray, optical and near-infrared activity of BL Lacertae reported in ATel #3368, #3371, and #3375 we have initiated Swift monitoring observations of the source with 1ks-long pointings planned once every 3 days until 2011 June 04. The first observation of the series was conducted on May 23 16:55 UT and is described here. The 0.3-10 keV X-ray spectrum of BL Lacertae observed by Swift/XRT can be described by an absorbed (N_HI = 3.6x1021 cm-2, Ravasio et al.
Cutini Sara
D'Ammando Filippo
Gelbord Jonathan Mark
Sokolovsky Kirill V.
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