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196 papers · 2 filters
Fe XIII emission lines in active region spectra obtained with the Solar Extreme-Ultraviolet Research Telescope and Spectrograph
F P Keenan, D B Jess, K M Aggarwal +3
Recent fully relativistic calculations of radiative rates and electron impact excitation cross sections for Fe {\sc xiii} are used to generate emission-line ratios involving 3s$^{2…
An XMM-Newton view of the X-ray flat radio-quiet quasar PG 1416-129
D. Porquet, J. N. Reeves, A. Markowitz +3
(abridged) The radio-quiet quasar PG1416-129 (z=0.129) exhibits atypical optical and X-ray properties. Between 1990 and 2000, in response to its optical continuum decrease, the ``c…
On the nature of the sources of the cosmic infrared background
A. Kashlinsky, R. G. Arendt, J. Mather +1
We discuss interpretation of the cosmic infrared background (CIB) anisotropies detected by us recently in the Spitzer IRAC based measurements. The fluctuations are approximately is…
Barred CO emission in HE1029-1831
M. Krips, A. Eckart, R. Neri +5
We present CO(1-0) and CO(2-1) line emission maps of the barred spiral active galaxy HE1029-1831 (z=0.0403) obtained with the IRAM Plateau de Bure Interferometer (PdBI) and in part…
Giant Flare in SGR 1806-20 and Its Compton Reflection from the Moon
D. D. Frederiks, S. V. Golenetskii, V. D. Palshin +5
We analyze the data obtained when the Konus-Wind gamma-ray spectrometer detected a giant flare in SGR 1806-20 on December 27, 2004. The flare is similar in appearance to the two kn…
Making a Short Gamma-Ray Burst from a Long one: Implications for the Nature of GRB 060614
Bing Zhang, Bin-Bin Zhang, En-Wei Liang +3
The absence of a supernova accompanying the nearby long GRB 060614 poses a great puzzle about the progenitor of this event and challenges the current GRB classification scheme. Thi…