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90 papers · 2 filters
Properties of Flares-Generated Seismic Waves on the Sun
A. G. Kosovichev
The solar seismic waves excited by solar flares (``sunquakes'') are observed as circular expanding waves on the Sun's surface. The first sunquake was observed for a flare of July 9…
X-ray Spectroscopy of Cooling Clusters
J. R. Peterson, A. C. Fabian
We review the X-ray spectra of the cores of clusters of galaxies. Recent high resolution X-ray spectroscopic observations have demonstrated a severe deficit of emission at the lowe…
A Keplerian Disk around the Herbig Ae star HD169142
A. Raman, M. Lisanti, D. J. Wilner +2
We present Submillimeter Array observations of the Herbig Ae star HD169142 in 1.3 millimeter continuum emission and 12CO J=2-1 line emission at 1.5 arcsecond resolution that reveal…
Inner-shell Absorption Lines of Fe~VI-- Fe~XVI: A Many-body Perturbation Theory Approach
Ming F. Gu, Tomer Holczer, Ehud Behar +1
We provide improved atomic calculation of wavelengths, oscillator strengths, and autoionization rates relevant to the inner-shell transitions of Fe~VI--XVI, the so-called…
XMM-Newton Spectroscopy of the Cluster of Galaxies 2A 0335+096
N. Werner, J. de Plaa, J. S. Kaastra +5
We present here the results of a deep (130 ks) XMM-Newton observation of the cluster of galaxies 2A 0335+096. The deep exposure allows us to study in detail its temperature structu…
Deceleration from Entrainment in the jet of the quasar 1136-135?
F. Tavecchio, L. Maraschi, R. M. Sambruna +4
Modeling the multiwavelength emission of successive regions in the jet of the quasar PKS 1136-135 we find indication that the jet suffers deceleration near its end on a (deprojecte…