Probing the Pulsar Wind Nebula of PSR B0355+54 (2006)
McGowan, Katherine E., Vestrand, W. Tom, Kennea, Jamie A., Zane, Silvia, Cropper, Mark, Cordova, France A.
We present XMM-Newton and Chandra X-ray observations of the middle-aged radio pulsar PSR B0355+54. Our X-ray observations reveal emission not only from the pulsar itself, but also from a compact...
McGowan, Katherine E., Charles, Phil A., Blustin, Alexander J., Livio, Mario, O'Donoghue, Darragh, Heathcote, Bernard
The highly luminous (> 10^37 erg s^-1) supersoft X-ray sources (SSS) are believed to be Eddington limited accreting white dwarfs undergoing surface hydrogen burning. The current paradigm for SSS...
McGowan, Katherine E., Zane, Silvia, Cropper, Mark, Vestrand, W. Thomas, Ho, Cheng
We report on the first XMM-Newton observation of the Vela-like pulsar PSR B2334+61. Spectral analysis reveals soft X-ray emission, with the bulk of the photons emitted at energies below ~1.5 keV. We...
On the Correlated X-ray and Optical Evolution of SS Cygni (2003)
McGowan, Katherine E., Priedhorsky, William C., Trudolyubov, Sergey P.
We have analyzed the variability and spectral evolution of the prototype dwarf nova system SS Cygni using RXTE data and AAVSO observations. A series of pointed RXTE/PCA observations allow us to trace...
XMM-Newton Observations of PSR B1706-44 (2003)
McGowan, Katherine E., Zane, Silvia, Cropper, Mark, Kennea, Jamie A., Cordova, France A., Ho, Cheng, ...
We report on the XMM-Newton observations of the young, 102 ms pulsar PSR B1706-44. We have found that both a blackbody plus power-law and a magnetized atmospheric model plus power-law provide an...
Correlated Optical and X-ray Variability in LMC X-2 (2003)
McGowan, Katherine E., Charles, Phil A., O'Donoghue, Darragh, Smale, Alan P.
We have obtained high time resolution (seconds) photometry of LMC X-2 in December 1997, simultaneously with the Rossi X-ray Timing Explorer (RXTE), in order to search for correlated X-ray and optical...
Detection of Pulsed X-ray Emission from XMM-Newton Observations of PSR J0538+2817 (2003)
McGowan, Katherine E., Kennea, Jamie A., Zane, Silvia, Cordova, France A., Cropper, Mark, Ho, Cheng, ...
We report on the XMM-Newton observations of the 143 ms pulsar PSR J0538+2817. We present evidence for the first detections of pulsed X-rays from the source at a frequency which is consistent with the...
On the Stability of the 421-day Periodicity in A0538-66 (2002)
McGowan, Katherine E., Charles, Phil A.
In this paper we analyse 70 years of archival Harvard and Schmidt plate data of the 16.6 d Be X-ray binary A0538-66 in order to search for the presence of the long-term period of 420.82 +/- 0.79 d...