81 citations · 201 across the 18 of their papers we have counts for
16 papers · 1 filter
Galactic Science with Ultra-High Angular Resolution X-ray Imaging
Paul A. Draghis, Jeremy Hare, Mayura Balakrishnan +8
Milli- to micro-arcsecond X-ray imaging will open a new observational regime for Galactic astrophysics by resolving physical scales that are inaccessible to current X-ray observato…
Science of High Resolution X-ray Imaging
H. L. Marshall, K. Weaver, M. Schattenburg +34
This report summarizes potential studies of the Hi-ReX Science Analysis Group for an Ultra-High Angular Resolution X-ray Observatory. Many potential science cases are presented, sp…
XRISM Observation of the Supernova Remnant N103B: Velocity Structure and Thermal Properties
Tyler Holland-Ashford, Brian J. Williams
We present the first analysis of the X-ray Imaging and Spectroscopy Mission (XRISM) observation of the supernova remnant (SNR) N103B. We fit the X-ray spectrum taken with the Resol…
Taming the Tarantula: How Stellar Wind Feedback Shapes Gas and Dust in 30 Doradus
Jennifer A. Rodriguez, Laura A. Lopez, Lachlan Lancaster +5
Observations of massive star-forming regions show that classical stellar wind models over-predict the luminosity of the X-ray emitting gas, indicating a significant fraction of win…
Proper Motion of the Neutron Star in the Supernova Remnant G18.9-1.1
Tyler Holland-Ashford, Brian Williams, Patrick Slane +1
In this paper, we present the first direct measurement of the proper motion of the neutron star (NS) in the supernova remnant (SNR) G18.9-1.1 using a 15-year Chandra baseline. Afte…
Estimating Global Ejecta Mass Ratios in Tycho's SNR
Tyler Holland-Ashford, Patrick Slane, Brian Williams
In this work, as a follow-up to our similar analysis of Kepler's supernova remnant (SNR), we estimate total mass ratios of various ejecta elements in Tycho's SNR using Suzaku X-ray…
Comparing the three-dimensional morphological asymmetries in the ejecta of Kepler and Tycho in X-rays
Adrien Picquenot, Tyler Holland-Ashford, Brian J. Williams
Recent simulations have shown that asymmetries in the ejecta distribution of supernova remnants (SNRs) may be a reflection of asymmetries left over from the initial supernova explo…
From Stellar Death to Cosmic Revelations: Zooming in on Compact Objects, Relativistic Outflows and Supernova Remnants with AXIS
S. Safi-Harb, K. B. Burdge, A. Bodaghee +32
Compact objects and supernova remnants provide nearby laboratories to probe the fate of stars after they die, and the way they impact, and are impacted by, their surrounding medium…
Updated Proper Motion of the Neutron Star in the Supernova Remnant Cassiopeia A
Tyler Holland-Ashford, Patrick Slane, Xi Long
In this paper, we present updated estimates of the velocity of the neutron star (NS) in the supernova remnant (SNR) Cassiopeia A using over two decades of Chandra observations. We…
Estimating Ejecta Mass Ratios in Kepler's SNR: Global X-Ray Spectral Analysis Including Suzaku Systematics and Emitting Volume Uncertainties
Tyler Holland-Ashford, Patrick Slane, Laura A. Lopez +2
The exact origins of many Type Ia supernovae$\unicode{x2013}$progenitor scenarios and explosive mechanisms$\unicode{x2013}$remain uncertain. In this work, we analyze the global Suz…
Three-dimensional morphological asymmetries in the ejecta of Cassiopeia A using a component separation method in X-rays
Adrien Picquenot, Fabio Acero, Tyler Holland-Ashford +2
Recent simulations have shown that asymmetries in the ejecta distribution of supernova remnants (SNR) can still reflect asymmetries from the initial supernova explosion. Thus, thei…
Spatially-Resolved Study of Recombining Plasma in W49B Using XMM-Newton
Tyler Holland-Ashford, Laura A. Lopez, Katie Auchettl
W49B is the youngest SNR to date that exhibits recombining plasma. The two prevailing theories of this overionization are rapid cooling via adiabatic expansion or through thermal c…
Evidence of a Type Ia Progenitor for Supernova Remnant 3C 397
Héctor Martínez-Rodríguez, Laura A. Lopez, Katie Auchettl +6
The explosive origin of the young supernova remnant (SNR) 3C 397 (G41.1-0.3) is debated. Its elongated morphology and proximity to a molecular cloud are suggestive of a core-collap…
Asymmetries of Heavy Elements in the Young Supernova Remnant Cassiopeia A
Tyler Holland-Ashford, Laura A. Lopez, Katie Auchettl
Supernova remnants (SNRs) offer the means to study supernovae (SNe) long after the original explosion and can provide a unique insight into the mechanism that governs these energet…
The Age Evolution of the Radio Morphology of Supernova Remnants
Jennifer N. Stafford, Laura A. Lopez, Katie Auchettl +1
Recent hydrodynamical models of supernova remnants (SNRs) demonstrate that their evolution depends heavily on the inhomogeneities of the surrounding medium. As SNRs expand, their m…
Comparing Neutron Star Kicks to Supernova Remnant Asymmetries
Tyler Holland-Ashford, Laura A. Lopez, Katie Auchettl +2
Supernova explosions are inherently asymmetric and can accelerate new-born neutron stars (NSs) to hundreds of km/s. Two prevailing theories to explain NS kicks are ejecta asymmetri…