Ghavamian, Parviz, Raymond, John C., Blair, William P., Long, Knox S., Tappe, Achim, Park, Sangwook, ...
We present mid-infrared (5-40 micron) spectra of shocked ejecta in the Galactic oxygen-rich supernova remnant G292.0+1.8, acquired with the IRS spectrograph on board the Spitzer Space Telescope. The...
Shock Speed, Cosmic Ray Pressure, and Gas Temperature in the Cygnus Loop (2008)
Salvesen, Greg, Raymond, John C., Edgar, Richard J.
Upper limits on the shock speeds in supernova remnants can be combined with post-shock temperatures to obtain upper limits on the ratio of cosmic ray to gas pressure (P_CR / P_G) behind the shocks....
Ejecta, Dust, and Synchrotron Radiation in B0540-69.3: A More Crab-Like Remnant than the Crab (2008)
Williams, Brian J., Borkowski, Kazimierz J., Reynolds, Stephen P., Raymond, John C., Long, Knox S., Morse, Jon A., ...
We present near and mid-infrared observations of the pulsar-wind nebula (PWN) B0540-69.3 and its associated supernova remnant made with the {\it Spitzer Space Telescope}. We report detections of the...
Ercolano, Barbara, Drake, Jeremy J., Raymond, John C., Clarke, Cathie C.
We present MOCASSIN 2D photoionisation and dust radiative transfer models of a prototypical T Tauri disk irradiated by X-rays from the young pre-main sequence star. The calculations demonstrate a...
Spatial Structure and Collisionless Electron Heating in Balmer-dominated Shocks (2008)
Van Adelsberg, Matthew, Heng, Kevin, McCray, Richard, Raymond, John C.
Balmer-dominated shocks in supernova remnants (SNRs) produce strong hydrogen lines with a two-component profile composed of a narrow contribution from cold upstream hydrogen atoms, and a broad...
Charles W. Danforth, William P. Blair, John C. Raymond
The XA region of the Cygnus Loop is a complex zone of radiative and nonradiatve shocks interacting with interstellar clouds. We combine ve far ultraviolet spectral observations from the Hopkins...
Solar And Heliospheric Observatory Ultraviolet Coronagraph Spectrometer And (2007)
Yohkoh Soft Ray, John C. Raymond, Jing Li, Angela Ciaravella, Joseph Michels, Silvano Fineschi, ...
We present the results of Solar and Heliospheric Observatory Ultraviolet Coronagraph Spectrometer (SOHO/UVCS) and Yohkoh Soft X-Ray Telescope (SXT) observations above an active region complex (AR...
THE EUV EMISSION-LINE SPECTRUM OF OY CARINAE IN SUPEROUTBURST: SCATTERING IN THE WIND (2007)
Christopher W. Mauche, John C. Raymond
El satélite Extreme Ultraviolet Explorer observó la variable cataclísmica OY Carina en una erupción mayor durante 3 días en marzo de 1977. El espectro resultante a 80–180 ˚A, que contiene...
RevMexAA (Serie de Conferencias), 9, 232-233 (2000) (2007)
Christopher W. Mauche, John C. Raymond
The Extreme Ultraviolet Explorer satellite observed the cataclysmic variable OY Carinae in superoutburst for 3 days in 1997 March. The resulting 80-180 A spectrum, which contains broad (FWHM 2000 km...
X-ray enabled MOCASSIN: a 3D code for photoionized media (2007)
Ercolano, Barbara, Young, Peter R., Drake, Jeremy J., Raymond, John C.
We present a new version of the fully 3D photoionization and dust radiative transfer code, MOCASSIN, that uses a Monte Carlo approach for the transfer of radiation. The X-ray enabled MOCASSIN allows...
FUSE Observations of a Full Orbit of Hercules X-1: Signatures of Disk, Star, and Wind (2007)
Boroson, Bram, Vrtilek, Saeqa Dil, Raymond, John C., Still, Martin
We observed an entire 1.7 day orbit of the X-ray binary Hercules X-1 with the Far Ultraviolet Spectroscopic Explorer (FUSE). Changes in the O VI 1032,1037 line profiles through eclipse ingress and...
The Transition Zone in Balmer-Dominated Shocks (2007)
Heng, Kevin, Van Adelsberg, Matthew, McCray, Richard, Raymond, John C.
We examine the structure of the post-shock region in supernova remnants (SNRs). The ``shock transition zone'' is set up by charge transfer and ionization events between atoms and ions, and has a...
Ghavamian, Parviz, Blair, William P., Sankrit, Ravi, Hughes, John P., Raymond, John C.
We present the first far ultraviolet (FUV) spectra of the four known Balmer-dominated supernova remnants (SNRs) in the Large Magellanic Cloud, acquired with the Far Ultraviolet Spectroscopic...
The transition zone in Balmer-dominated shocks (2007)
Heng, Kevin, Van Adelsberg, Matthew, McCray, Richard, Raymond, John C.
Yuan-kuen Ko, Jing Li, Pete Riley, John C. Raymond
We construct subsynoptic maps of the ultraviolet-line fluxes, electron density, and elemental abundances for an east limb corona at 1.63 solar radii from 2000 September 20 to October 1. The data,...
[Ne V] Imaging of N49 in the Large Magellanic Cloud (2006)
Rakowski, Cara E., Raymond, John C., Szentgyorgyi, Andrew H.
We present sub-arcsecond imaging in [Ne V] of N49, the brightest optical SNR in the LMC. Between the "cool" optical and "hot" X-ray regimes, [Ne V] emission indicates intermediate temperatures for...
The euv emission-line spectrum of oy carinae in superoutburst: scattering in the wind (2006)
Christopher W. Mauche, John C. Raymond
The euv emission-line spectrum of oy carinae in superoutburst: scattering in the wind
Dust Destruction in Type Ia Supernova Remnants in the Large Magellanic Cloud (2006)
Borkowski, Kazimierz J., Williams, Brian J., Reynolds, Stephen P., Blair, William P., Ghavamian, Parviz, Sankrit, Ravi, ...
We present first results from an extensive survey of Magellanic Clouds supernova remnants (SNRs) with the Spitzer Space Telescope. We describe IRAC and MIPS imaging observations at 3.6, 4.5, 5.8, 8,...
Kohl, John L., Cranmer, Steven R., Gardner, Larry D., Lin, Jun, Raymond, John C., Strachan, Leonard
We summarize the unique capabilities of UV coronagraphic spectroscopy for determining the detailed plasma properties (e.g., density, temperature, outflow speed, composition) of the source regions of...
Jimenez-Garate, Mario A., Raymond, John C., Liedahl, Duane A., Hailey, Charles J.
We identify an accretion disk atmosphere and corona from the high resolution X-ray spectrum of Hercules X-1, and we determine its detailed physical properties. More than two dozen recombination...
Chandra HETG Spectra of SS Cyg and U Gem in Quiescence and Outburst (2004)
Mauche, Christopher W., Wheatley, Peter J., Long, Knox S., Raymond, John C., Szkody, Paula
Chandra HETG spectra of the prototypical dwarf novae SS Cyg and U Gem in quiescence and outburst are presented and discussed. When SS Cyg goes into outburst, it becomes dimmer in hard X-rays and...
Molecular Cloud Formation Behind Shock Waves (2004)
Bergin, Edwin A., Hartmann, Lee W., Raymond, John C., Ballesteros-Paredes, Javier
We examine the formation of molecular gas behind shocks in atomic gas using a chemical/dynamical model, particular emphasis is given to constraints the chemistry places on the dynamical evolution....
Chandra Observation of V426 Oph: Weighing the Evidence for a Magnetic White Dwarf (2004)
Homer, Lee, Szkody, Paula, Raymond, John C., Fried, Robert E., Hoard, D. W., Hawley, S. L., ...
We report the results of a 45 ks Chandra observation of the cataclysmic variable V426 Ophiuchus. The high resolution spectrum from the high-energy transmission grating spectrometer is most consistent...
Atomic X-Ray Spectra of Accretion Disk Atmospheres in the Kerr Metric (2004)
Jimenez-Garate, Mario A., Liedahl, Duane A., Mauche, Christopher W., Raymond, John C.
We calculate the atmospheric structure of an accretion disk around a Kerr black hole and obtain its X-ray spectrum, which exhibits prominent atomic transitions under certain circumstances. The...
Reprocessing of Soft X-ray Emission Lines in Black Hole Accretion Disks (2004)
Mauche, Christopher W., Liedahl, Duane A., Mathiesen, Benjamin F., Jimenez-Garate, Mario A., Raymond, John C.
By means of a Monte Carlo code that accounts for Compton scattering and photoabsorption followed by recombination, we have investigated the radiation transfer of Ly alpha, He alpha, and recombination...
Chandra x-ray results on v426 ophiuchi (2004)
Fried , Robert E., Hawley , S. L., Hoard , D. W., Homer , Lee, Raymond , John C., Szkody , Paula, ...
De las observaciones de 45 ks de Chandra de V426 Oph hemos obtenido espectros de rayos X de alta resolución con relación señal-a-ruido moderada, y una curva de luz no interrumpida de buena...
The Effect of Proton Temperature Anisotropy on the Solar Minimum Corona and Wind (2003)
Vasquez, Alberto M., Van Ballegooijen, Adriaan A., Raymond, John C.
A semi-empirical, axisymmetric model of the solar minimum corona is developed by solving the equations for conservation of mass and momentum with prescribed anisotropic temperature distributions. In...
Optical and Far-UV Spectroscopy of Knot D in the Vela Supernova Remnant (2003)
Sankrit, Ravi, Blair, William P., Raymond, John C.
We present spectra of optical filaments associated with the X-ray knot D in the Vela supernova remnant. It has been suggested that Knot D is formed by a bullet of supernova ejecta, that it is a...
Analysis of H2 Emission from Mira B in UV Spectra from HST (2002)
Wood, Brian E., Karovska, Margarita, Raymond, John C.
We analyze Ly-alpha fluoresced H2 lines observed in the UV spectrum of Mira B. We identify 13 different sequences fluoresced by 13 different H2 transitions within the Ly-alpha line. The observed H2...
The Optical Spectrum of the SN 1006 Supernova Remnant Revisited (2002)
Ghavamian, Parviz, Winkler, P. Frank, Raymond, John C., Long, Knox S.
We present the deepest optical spectrum acquired to date of Balmer-dominated shocks in the NW rim of SN 1006. We detect the broad and narrow components of H-alpha, H-beta and H-gamma and report the...
Yuan-kuen Ko, John C. Raymond, Jing Li, Angela Ciaravella, Joseph Michels
We present the results of Solar and Heliospheric Observatory Ultraviolet Coronagraph Spectrometer (SOHO/UVCS) and Yohkoh Soft X-Ray Telescope (SXT) observations above an active region complex (AR...
Smith, Randall K., Brickhouse, Nancy S., Liedahl, Duane A., Raymond, John C.
New X-ray observatories (Chandra and XMM-Newton) are providing a wealth of high-resolution X-ray spectra in which hydrogen- and helium-like ions are usually strong features. We present results from a...
A Detailed Analysis of a Cygnus Loop Shock-Cloud Interaction (2001)
Danforth, Charles W., Blair, William P., Raymond, John C.
The XA region of the Cygnus Loop is a complex zone of radiative and nonradiative shocks interacting with interstellar clouds. We combine five far ultraviolet spectral observations from the Hopkins...
Ghavamian, Parviz, Raymond, John C., Blair, William P.
We present far ultraviolet spectra of a fast (~ 300 km/s) nonradiative shock in the Cygnus Loop supernova remnant. Our observations were performed with the Far Ultraviolet Spectroscopic Explorer...
Blair, William P., Sankrit, Ravi, Shelton, Robin, Sembach, Kenneth R., Moos, H. Warren, Raymond, John C., ...
We report a Far Ultraviolet Spectroscopic Explorer satellite observation of the supernova remnant N49 in the Large Magellanic Cloud, covering the 905 -- 1187 A spectral region. A 30'' square aperture...
EUVE Observations of OY Carinae in Superoutburst (2000)
Mauche, Christopher W., Raymond, John C.
The Extreme Ultraviolet Explorer (EUVE) satellite was used for three days beginning on 1997 Mar 26.96 UT to obtain photometric and spectroscopic observations of the eclipsing SU UMa-type dwarf nova...
The euv emission-line spectrum of oy carinae in superoutburst: scattering in the wind (2000)
Mauche , Christopher W., Raymond , John C.
The Extreme Ultraviolet Explorer satellite observed the cataclysmic variable OY Carinae in superoutburst for 3 days in 1997 March. The resulting 80{180 A spectrum, which contains broad (FWHM 2000 km s
Blair, William P., Sankrit, Ravi, Raymond, John C., Long, Knox S.
We present a Hubble Space Telescope/WFPC2 narrow-band H-alpha image of a region on the northeastern limb of the Cygnus Loop supernova remnant. This location provides a detailed example of where the...
ORFEUS II Far-UV Spectroscopy of AM Herculis (1998)
Mauche, Christopher W., Raymond, John C.
Six high-resolution (\lambda/\Delta\lambda ~ 3000) far-UV (\lambda\lambda = 910-1210 \AA) spectra of the magnetic cataclysmic variable AM Herculis were acquired in 1996 November during the flight of...
Illumination in symbiotic binary stars: Non-LTE photoionization models. II. Wind case (1997)
Proga, Daniel, Kenyon, Scott J., Raymond, John C.
We describe a non-LTE photoionization code to calculate the wind structure and emergent spectrum of a red giant wind illuminated by the hot component of a symbiotic binary system. We consider...
The Winds of Cataclysmic Variables (1997)
Mauche, Christopher W., Raymond, John C.
We present an observational and theoretical review of the winds of cataclysmic variables (CVs). Specifically, we consider the related problems of the geometry, ionization state, and mass-loss rate of...
The Ultraviolet Spectrum Of A Face-On Shock Wave In The Vela Supernova Remnant (1997)
John C. Raymond, William P. Blair, Knox S. Long, Jon Morse, ...
Ultraviolet emission lines in supernova remnants (SNRs) provide important clues to the shock velocities, densities, grain destruction, and thermal structure of the cooling regions in these objects....