Publications (8)
Stellar associations powering HII regions $\unicode{x2013}$ I. Defining an evolutionary sequence
Fabian Scheuermann, Kathryn Kreckel, Ashley T. Barnes +30
Connecting the gas in HII regions to the underlying source of the ionizing radiation can help us constrain the physical processes of stellar feedback and how HII regions evolve ove…
Locating the most energetic electrons in Cassiopeia A
Brian W. Grefenstette, Stephen P. Reynolds, Fiona A. Harrison +17
We present deep (2.4 Ms) observations of the Cassiopeia A supernova remnant with {\it NuSTAR}, which operates in the 3--79 keV bandpass and is the first instrument capable of sp…
Bi-interpretability of Some Monoids with the Arithmetic and Applications
Olga Kharlampovich, Laura Lopez
We will prove bi-interpretability of the arithmetic and the weak second order theory of with the free monoid of finite ra…
Linking stellar populations to HII regions across nearby galaxies. II. Infrared Reprocessed and UV Direct Radiation Pressure in HII Regions
Debosmita Pathak, Adam Leroy, Todd Thompson +27
Radiation pressure is a key mechanism by which stellar feedback disrupts molecular clouds and drives HII region expansion. This includes direct radiation pressure exerted by UV pho…
The distribution of radioactive Ti in Cassiopeia A
Brian W. Grefenstette, Chris L. Fryer, Fiona A. Harrison +28
The distribution of elements produced in the inner-most layers of a supernova explosion is a key diagnostic for studying the collapse of massive stars. Here we present the results…
High-Energy Astrophysics in the 2020s and Beyond
Christopher Reynolds, Robert Petre, Michael Corcoran +7
With each passing decade, we gain new appreciation for the dynamic, connected, and often violent nature of the Universe. This reality necessarily places the study of high-energy pr…