Search Results - "Raymond, John C."

A Nitrogen-rich Supernova Remnant in M31: Interaction with the Circumstellar Medium at Late Times by Caldwell, Nelson, Raymond, John C.

“…Abstract We present the discovery of a supernova remnant in M31 which is unlike any other remnant known in that galaxy. An optical ground-based spectrum of…”
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The Dynamical Behavior of Reconnection-driven Termination Shocks in Solar Flares: Magnetohydrodynamic Simulations by Shen, Chengcai, Kong, Xiangliang, Guo, Fan, Raymond, John C., Chen, Bin

“…In eruptive solar flares, termination shocks (TSs), formed when high-speed reconnection outflows collide with closed dense flaring loops, are believed to be…”
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The Distance to the S147 Supernova Remnant by Kochanek, C. S., Raymond, John C., Caldwell, Nelson

“…In the absence of a parallax distance to a pulsar or a surviving binary in a supernova remnant (SNR), distances to Galactic SNRs are generally very uncertain…”
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Third Epoch HST Imaging of a Nonradiative Shock in the Cygnus Loop Supernova Remnant by Sankrit, Ravi, Blair, William P., Raymond, John C.

“…Abstract We present new HST/WFC3 optical images of a region in the northeastern part of the Cygnus Loop supernova remnant, which includes a well-studied…”
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Nonequilibrium Ionization Modeling of Petschek-type Shocks in Reconnecting Current Sheets in Solar Eruptions by Shen, Chengcai, Raymond, John C., Murphy, Nicholas A.

“…Abstract Nonequilibrium ionization (NEI) is essentially required for astrophysical plasma diagnostics once the plasma status departs from the assumption of…”
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Electron–Ion Temperature Ratio in Astrophysical Shocks by Raymond, John C., Ghavamian, Parviz, Bohdan, Artem, Ryu, Dongsu, Niemiec, Jacek, Sironi, Lorenzo, Tran, Aaron, Amato, Elena, Hoshino, Masahiro, Pohl, Martin, Amano, Takanobu, Fiuza, Frederico

“…Abstract Collisionless shock waves in supernova remnants and the solar wind heat electrons less effectively than they heat ions, as is predicted by kinetic…”
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He Abundance of Dense Circumstellar Clumps in the Cassiopeia A Supernova Remnant by Koo, Bon-Chul, Kim, Dongkok, Yoon, Sung-Chul, Raymond, John C.

“…Abstract We report on the result of He abundance analysis of dense circumstellar clumps in the young supernova remnant Cassiopeia A. These clumps, which are…”
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A Massive Shell of Supernova-formed Dust in SNR G54.1+0.3 by Temim, Tea, Dwek, Eli, Arendt, Richard G., Borkowski, Kazimierz J., Reynolds, Stephen P., Slane, Patrick, Gelfand, Joseph D., Raymond, John C.

“…While theoretical models of dust condensation predict that most refractory elements produced in core-collapse supernovae (SNe) efficiently condense into dust,…”
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Three-dimensional Simulation of Thermodynamics on Confined Turbulence in a Large-scale CME-flare Current Sheet by Ye, Jing, Raymond, John C., Mei, Zhixing, Cai, Qiangwei, Chen, Yuhao, Li, Yan, Lin, Jun

“…Abstract Turbulence plays a key role in forming the complex geometry of the large-scale current sheet (CS) and fast energy release in a solar eruption. In this…”
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Observations and Interpretation of a Low Coronal Shock Wave Observed in the EUV by the SDO/AIA by Ma, Suli, Raymond, John C, Golub, Leon, Lin, Jun, Chen, Huadong, Grigis, Paolo, Testa, Paola, Long, David

“…Taking advantage of both the high temporal and spatial resolutions of the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory, we studied a…”
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Solar Energetic Particle Charge States and Abundances with Nonthermal Electrons by Lee, Jin-Yi, Kahler, Stephen, Raymond, John C., Ko, Yuan-Kuen

“…Abstract An important aspect of solar energetic particle (SEP) events is their source populations. Elemental abundance enhancements of impulsive SEP events,…”
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The Spin of a Newborn Black Hole: Swift J1728.9-3613 by Draghis, Paul A., Balakrishnan, Mayura, Miller, Jon M., Cackett, Edward, Fabian, Andrew C., Miller-Jones, James, Ng, Mason, Raymond, John C., Reynolds, Mark, Zoghbi, Abderahmen

“…Abstract The origin and distribution of stellar-mass black hole spins are a rare window into the progenitor stars and supernova events that create them. Swift…”
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The Cygnus Loop’s distance, properties, and environment driven morphology by Fesen, Robert A, Weil, Kathryn E, Cisneros, Ignacio A, Blair, William P, Raymond, John C

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Turbulence and Energetic Particles in Radiative Shock Waves in the Cygnus Loop. I. Shock Properties by Raymond, John C., Chilingarian, Igor V., Blair, William P., Sankrit, Ravi, Slavin, Johnathan D., Burkhart, Blakesley

“…We have obtained a contiguous set of long-slit spectra of a shock wave in the Cygnus Loop to investigate its structure, which is far from the morphology…”
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Numerical Simulations of Supernova Remnant Evolution in a Cloudy Interstellar Medium by Slavin, Jonathan D., Smith, Randall K., Foster, Adam, Winter, Henry D., Raymond, John C., Slane, Patrick O., Yamaguchi, Hiroya

“…The mixed morphology class of supernova remnants has centrally peaked X-ray emission along with a shell-like morphology in radio emission. White & Long…”
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G107.0+9.0: a new large optically bright, radio, and X-Ray faint galactic supernova remnant in Cepheus by Fesen, Robert A, Weil, Kathryn E, Raymond, John C, Huet, Laurent, Rusterholz, Martin, di Cicco, Dennis, Mittelman, David, Walker, Sean, Drechsler, Marcel, Faworski, Sheldon

“…ABSTRACT Wide-field H α images of the Galactic plane have revealed a new supernova remnant (SNR) nearly 3 deg in diameter centred at l = 107.0, b = +9.0. Deep…”
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MMT Spectroscopy of Supernova Remnant Candidates in M33 by Long, Knox S., Blair, William P., Milisavljevic, Dan, Raymond, John C., Winkler, P. Frank

“…To date, over 220 emission nebulae in M33 have been identified as supernova remnants (SNRs) or SNR candidates, principally through [S ii]:H line ratios that…”
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3D MHD Time-dependent Charge State Ionization and Recombination Modeling of the Bastille Day Coronal Mass Ejection by Rivera, Yeimy J., Raymond, John C., Reeves, Katharine K., Lepri, Susan T., Lionello, Roberto, Downs, Cooper, Wilson, Maurice L., Trueba, Nicolas

“…Abstract Heavy ion signatures of coronal mass ejections (CMEs) indicate that rapid and strong heating takes place during the eruption and early stages of…”
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The Cygnus Loop: Shock Precursors and Electron–Ion Equilibration by Raymond, John C., Seok, Ji Yeon, Koo, Bon-Chul, Chilingarian, Igor V., Grishin, Kirill, Caldwell, Nelson, Xie, Min, Fesen, Robert

“…Abstract The outermost edges of some supernova remnants are marked by filaments of pure Balmer line emission produced by nonradiative shock fronts. The H α…”
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The Peculiar Ejecta Rings in the O-Rich Supernova Remnant Puppis A: Evidence of a Binary Interaction? by Ghavamian, Parviz, Seitenzahl, Ivo R., Vogt, Frédéric P. A., Raymond, John C., Scelsi, Jasper

“…Abstract Near the center of the Puppis A supernova remnant a series of nested, optically emitting rings of high-velocity ejecta (known as “the Swirl”) were…”
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