253 citations · 1.7k across the 67 of their papers we have counts for
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New X-ray observations of the old nova CP Puppis and of the more recent nova V351 Pup
M. Orio, K. Mukai, A. Bianchini +2
We present X-ray observations of the field containing Nova Puppis 1942 (CP Pup) and Nova Puppis 1991 (V351 Pup), done with ASCA in 1998, and with XMM-Newton in 2005. The X-ray and…
X-ray Spectroscopy of the 2006 Outburst of RS Oph
Thomas Nelson, Marina Orio, Joseph P. Cassinelli +3
We present the X-ray grating spectra of the recurrent nova RS Ophiuchi during its 2006 outburst, obtained with the XMM-Newton and Chandra observatories. Two weeks after optical max…
Two SMC Symbiotic stars undergoing steady hydrogen burning
M. orio, A. Zezas, U. Munari +2
Two symbiotic stars in the Small Magellanic Cloud (SMC), Lin 358 and SMC 3, have been supersoft X-ray sources (SSS) for more than 10 years. We fit atmospheric and nebular models to…
A Close Look at the Population of Supersoft and Quasi-Soft X-Ray Sources Observed in M31 with XMM-Newton
M. Orio
The deepest X-ray images of M31, obtained with XMM-Newton, are examined in this paper to derive spectral and statistical properties of the population of the softest X-ray sources.…
X-ray Observations of the Bright Old Nova V603 Aquilae
K. Mukai, M. Orio
We report on our Chandra and RXTE observations of the bright old nova, V603 Aql, performed in 2001 April, supplemented by our analysis of archival X-ray data on this object. We fin…
Chandra observations of the recurrent nova IM Nor
Marina Orio, Emre Tepedelenlioglu, Sumner Starrfield +2
The recurrent nova IM Nor was observed twice in X-rays with Chandra ACIS-S, 1 and 6 months after the optical outburst. It was not detected in the first observation, with an upper l…
Spectral Analysis of Super Soft X-ray Sources: V4743 Sagittarii
Thomas Rauch, Marina Orio, R. Gonzales-Riestra +1
Half a year after its outburst, the nova V4743 Sgr evolved into the brightest super-soft X-ray source in the sky with a flux maximum around 30A, exhibiting resonance lines of C V,…
Phototmetry of V1062 Tau: low states, short outbursts, and period-switching
Y. M. Lipkin, E. M. Leibowitz, M. Orio
Time resolved photometry of the long-period intermediate polar V1062 Tau confirmed the presence of the previously reported orbital and spin periods, and revealed the presence of a…
A Chandra LETGS observation of V4743 Sagittarius: A Super Soft X-ray Source and a Violently Variable Light Curve
J. -U. Ness, S. Starrfield, V. Burwitz +13
V4743 Sgr (Nova Sgr 2002 No. 3) was discovered on 20 September 2002. We obtained a 5ks ACIS-S spectrum in November 2002 and found that the nova was faint in X-rays. We then obtaine…
A XMM-Newton observation of Nova LMC 1995, a bright supersoft X-ray source
Marina Orio, Wouter Hartmann, Martin Still +1
Nova LMC 1995, previously detected during 1995-1998 with ROSAT, was observed again as a luminous supersoft X-ray source with XMM-Newton in December of 2000. This nova offers the po…
The X-ray emission from Nova V382 Velorum: II. The super-soft component observed with BeppoSAX
M. Orio, A. N. Parmar, J. Greiner +3
Nova Velorum 1999 (V382 Vel) was observed by BeppoSAX 6 months after optical maximum and was detected as a bright X-ray supersoft source, with a count rate 3.454+-0.002 cts/s in th…
BZ Cam during its 1999/2000 optical low state
J. Greiner, G. Tovmassian, M. Orio +6
We report optical observations of the VY Scl star BZ Cam during its previous optical low state in 1999/2000. We find drastic variations in the line profiles. Narrow-band imaging ob…
X-ray emission from classical and recurrent-novae observed with ROSAT
M. Orio, J. Covington, H. Ogelman
We have analysed 350 pointed and serendipitous observations of 108 different classical and recurrent novae in outburst and in quiescence, contained in the ROSAT archive. One aim wa…
V382 Vel: a "shocking" supersoft x-ray source?
Marina Orio, Arvind Parmar
Nova Vel 1999 (V382 Vel) was observed with BeppoSAX twice, 15 days and 6 months after the optical maximum. A hard X-ray source was detected in the first observation, while the seco…
The emission nebula associated with V1974 Cyg: a unique object?
R. Casalegno, M. Orio, J. Mathis +6
Through a program of narrow band imaging, we have observed the changing structure of the H alpha emission line around Nova Cyg 1992 (V1974 Cyg) at regular intervals from 1996 to 19…
RX J0537.7-7034: The shortest-period supersoft X-ray source
J. Greiner, M. Orio, R. Schwarz
We present new photometric and spectroscopic observations of the transient supersoft X-ray source RX J0537.7-7034 and find a periodicity of approximately 3.5 hrs. This establishes…
The Long-Term X-Ray Lightcurve of RX J0527.8-6954
J. Greiner, R. Schwarz, G. Hasinger +1
We present further observational data of the supersoft X-ray source RX J0527.8-6954 exhibiting a continuous decline over the past 5 yrs. With no clear trend of a concordant tempera…