A New Analysis of the O VI Emitting Nebula around KPD 0005+5106 (2009)
Sankrit, Ravi, Dixon, W. Van Dyke
We present observations of O VI 1032 emission around the helium white dwarf KPD 0005+5106 obtained with the Far Ultraviolet Spectroscopic Explorer. Previously published data, reprocessed with an...
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...
Recent FUSE Observations of Diffuse O VI Emission from the Interstellar Medium (2008)
Dixon, W. Van Dyke, Sankrit, Ravi
We present new results from our survey of diffuse O VI-emitting gas in the interstellar medium with the Far Ultraviolet Spectroscopic Explorer (FUSE). Background observations obtained since 2005 have...
Far-Ultraviolet Cooling Features of the Antlia Supernova Remnant (2007)
Shinn, Jong-Ho, Min, Kyoung Wook, Sankrit, Ravi, Ryu, Kwang-Sun, Kim, Il-Joong, Han, Wonyong, ...
We present far-ultraviolet observations of the Antlia supernova remnant obtained with Far-ultraviolet IMaging Spectrograph (FIMS, also called SPEAR). The strongest lines observed are C IV 1548,1551...
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...
Blair, William P., Ghavamian, Parviz, Long, Knox S., Williams, Brian J., Borkowski, Kazimierz J., Reynolds, Stephen P., ...
We present 3.6 - 160 micron infrared images of Kepler's supernova remnant (SN1604) obtained with the IRAC and MIPS instruments on the Spitzer Space Telescope. We also present MIPS SED low resolution...
Far Ultraviolet Spectroscopic Explorer Survey of Magellanic Cloud Supernova Remnants (2006)
Blair, William P., Ghavamian, Parviz, Sankrit, Ravi, Danforth, Charles W.
We report the progress to date from an ongoing unbiased ultraviolet survey of supernova remnants in the Magellanic Clouds using the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. This...
An Extended FUSE Survey of Diffuse O VI Emission in the Interstellar Medium (2006)
Dixon, W. Van Dyke, Sankrit, Ravi, Otte, Birgit
We present a survey of diffuse O VI emission in the interstellar medium obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE). Spanning 5.5 years of FUSE observations, from launch through...
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,...
SPEAR Far Ultraviolet Spectral Images of the Cygnus Loop (2006)
Seon, Kwang-Il, Han, Wonyong, Nam, Uk-Won, Park, Jang-Hyun, Edelstein, Jerry, Korpela, Eric J., ...
We present far-ultraviolet (FUV) spectral images, measured at C IV 1550, He II 1640, Si IV+O IV] 1400, and O III] 1664, of the entire Cygnus Loop, observed with the Spectroscopy of Plasma Evolution...
An Unbiased Far Ultraviolet Survey of Magellanic Cloud Supernova Remnants (2004)
Ghavamian, Parviz, Blair, William P., Sankrit, Ravi, Danforth, Charles, Sembach, Kenneth
We have undertaken a FUSE survey of Magellanic Cloud supernova remnants, looking primarily for O VI and C III emission lines. Work in earlier cycles with FUSE indicates that optical and/or X-ray...
A Million-Second Chandra View of Cassiopeia A (2004)
Hwang, Una, Laming, J. Martin, Badenes, Carles, Berendse, Fred, Blondin, John, Cioffi, Denis, ...
We introduce a million-second observation of the supernova remnant Cassiopeia A with the Chandra X-ray Observatory. The bipolar structure of the Si-rich ejecta (NE jet and SW counterpart) is clearly...
Discovery of an OVI Emitting Nebula around the Hot White Dwarf KPD 0005+5106 (2004)
Otte, Birgit, Dixon, W. Van Dyke, Sankrit, Ravi
A survey of diffuse interstellar sight lines observed with the Far Ultraviolet Spectroscopic Explorer has led to the serendipitous discovery of a high-ionization nebula around the hot white dwarf KPD...
FUSE Detection of Galactic OVI Emission in the Halo above the Perseus Arm (2003)
Otte, Birgit, Dixon, W. Van Dyke, Sankrit, Ravi
Background observations obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) toward l=95.4, b=36.1 show OVI 1032,1038 in emission. This sight line probes a region of stronger-than-average...
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...
Far-Ultraviolet & Halpha Spectroscopy of SNR0057-7226 in the SMC HII Region N66 (2002)
Danforth, Charles, Sankrit, Ravi, Blair, William, Howk, Chris, Chu, You-Hua
N66/NGC346 is the largest and brightest HII region in the Small Magellanic Cloud and contains at least one known supernova remnant SNR0057-7226. Optical emission from the remnant is overwhelmed by...
Far Ultraviolet Spectra of a Non-Radiative Shock Wave in the Cygnus Loop (2002)
Raymond, John, Ghavamian, Parviz, Sankrit, Ravi, Blair, William, Curiel, Salvador
Spatial and spectral profiles of O VI emission behind a shock wave on the northern edge of the Cygnus Loop were obtained with the FUSE satellite. The velocity width of the narrowest O VI profile...
FUSE Observations of the Cygnus Loop: OVI Emission from a Nonradiative Shock (2001)
Sankrit, Ravi, Blair, William P.
We present Far Ultraviolet Spectroscopic Explorer (FUSE) observations of a Balmer filament in the northeast region of the Cygnus Loop supernova remnant. The data consist of one spectrum obtained...
Resonance Line Scattering in Supernova Remnant Shocks (2001)
We present a three dimensional radiative transfer model to examine the effects of resonance line scattering in the post-shock flow behind a non-radiative supernova remnant shock. For a rippled shock...
FUSE Observations of an X-Ray Bright Region in the Vela Supernova Remnant (2000)
Sankrit, Ravi, Shelton, R. L., Blair, W. P., Sembach, K. R., Jenkins, E. B.
We present the results of a FUSE observation of an X-ray selected knot in the Vela supernova remnant. Spectra were obtained through the 30"x30" low resolution aperture and the 4"x20" medium...
HST-STIS Observations of the Cygnus Loop: Spatial Structure of a Non-radiative Shock (2000)
Sankrit, Ravi, Blair, W. P., Raymond, J. C., Long, K. S.
We present a spatially-resolved ultraviolet spectrum of a non-radiative shock front in the Cygnus Loop, obtained with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space...
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...
Modeling the Photoionized Interface in Blister HII Regions (2000)
Sankrit, Ravi, Hester, J. Jeff
We present a grid of photoionization models for the emission from photoevaporative interfaces between the ionized gas and molecular cloud in blister HII regions. For the density profiles of the...
HST-FOS Observations of M87: Ly-a Emission from the Active Galactic Nucleus (1999)
Sankrit, Ravi, Sembach, Kenneth R., Canizares, Claude R.
The Faint Object Spectrograph on the Hubble Space Telescope was used to obtain spectra of the central region of M87. These spectra cover the wavelength range 1140 - 1606 Angstrom and have a...
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...
Thesis (Ph. D.)--Arizona State University, 1998.