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Probing Coronal Magnetic Fields with Sungrazing Comets: \hi\ Ly from Pickup Ions
John Raymond, Silvio Giordano
Observations of sungrazing comets can be used to probe the solar corona, to study the composition of the comets, and to investigate the plasma processes that govern the interaction…
First evidence of enhanced recombination in astrophysical environments and the implications for plasma diagnostics
A. Nemer, N. C. Sterling, J. Raymond +6
We report the first unambiguous observational evidence of Rydberg Enhanced Recombination (RER), a potentially important recombination mechanism that has hitherto been unexplored in…
Detection of Pristine Circumstellar Material of the Cassiopeia A Supernova
Bon-Chul Koo, Hyun-Jeong Kim, Heeyoung Oh +4
Cassiopeia A is a nearby young supernova remnant that provides a unique laboratory for the study of core-collapse supernova explosions. Cassiopeia A is known to be a Type IIb super…
The nature of the broadband X-ray variability in the dwarf Seyfert galaxy NGC 4395
E. S. Kammoun, E. Nardini, A. Zoghbi +14
We present a flux-resolved X-ray analysis of the dwarf Seyfert 1.8 galaxy NGC 4395, based on three archival and one archival observations. The source is known…
A Comprehensive Chandra Study of the Disk Wind in the Black Hole Candidate 4U 1630-472
Nicolas Trueba, J. M. Miller, J. Kaastra +4
The mechanisms that drive disk winds are a window into the physical processes that underlie the disk. Stellar-mass black holes are an ideal setting in which to explore these mechan…
Dust destruction in non-radiative shocks
H. Zhu, P. Slane, J. Raymond +1
Supernova remnant (SNR) shock waves are the main place where interstellar dust grains are destroyed. However, the dust destruction efficiency in non-radiative shocks is still not w…