880 citations · 9.5k across the 207 of their papers we have counts for
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TeV J2032+4130: a not-so-dark Accelerator?
Yousaf M. Butt, Jorge A. Combi, Jeremy Drake +5
The HEGRA gamma-ray source TeV J2032+4130 is considered the prototypical 'dark accelerator', since it was the first TeV source detected with no firm counterparts at lower frequenci…
Soft X-ray Spectroscopy of the Hot DA White Dwarf LB1919 and the PG1159 Star PG1520+525
K. Werner, J. J. Drake, T. Rauch +2
We have performed soft X-ray spectroscopy of two hot white dwarfs with the Chandra observatory using the Low Energy Transmission Grating. The first target is the hot DA white dwarf…
Infrared observations of the 2006 outburst of the recurrent nova RS Ophiuchi: the early phase
A. Evans, T. Kerr, Bin Yang +20
We present infrared spectroscopy of the recurrent nova RS Ophiuchi, obtained 11.81, 20.75 and 55.71 days following its 2006 eruption. The spectra are dominated by hydrogen recombin…
Dark Supergiant: Chandra's Limits on X-rays from Betelgeuse
Jennifer Posson-Brown, Vinay L. Kashyap, Deron O. Pease +1
We have analyzed Chandra calibration observations of Betelgeuse (alpha Ori, M2Iab, m_V=0.58, 131 pc) obtained at the aimpoint locations of the HRC-I (8 ks), HRC-S (8 ks), and ACIS-…
On the Relevance of Compton Scattering for the Soft X-ray Spectra of Hot DA White Dwarfs
V. Suleimanov, J. Madej, J. J. Drake +2
We re-examine the effects of Compton scattering on the emergent spectra of hot DA white dwarfs in the soft X-ray range. Earlier studies have implied that sensitive X-ray observatio…
Soft X-ray emission lines of Fe XV in solar flare observations and the Chandra spectrum of Capella
F. P. Keenan, J. J. Drake, S. Chung +5
Recent calculations of atomic data for Fe XV have been used to generate theoretical line ratios involving n = 3-4 transitions in the soft X-ray spectral region (52-83 A), for a wid…