Chandra Evidence of a Flattened, Triaxial Dark Matter Halo in the Elliptical Galaxy NGC 720 by Jeltema, Tesla E., Canizares, Claude R., Garmire, Gordon P., Buote, David A.

“…The Chandra data confirm the magnitude of the ~20° position angle (P.A.) twist discovered by ROSAT over this region. However, the twist in the Chandra data is more gradual and occurs at smaller a, also because of the point sources contaminating the ROSAT values. …”
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Structure and Evolution of Pre-Main Sequence Stars by Schulz, Norbert S., Allen, Glenn E., Bautz, Mark W., Canizares, Claude R., Davis, John E., Dewey, Dan, Huenemoerder, David P., Heilmann, Ralf K., Houck, John C., Marshall, Herman Lee, Nowak, Michael A., Schattenburg, Mark

“…Low-mass pre-main sequence (PMS) stars are strong and variable X-ray emitters, as has been well established by EINSTEIN and ROSAT observatories. It was originally believed that this emission was of thermal nature and primarily originated from coronal activity (magnetically confined loops, in analogy with Solar activity) on contracting young stars. …”
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A 33 yr CONSTANCY OF THE X-RAY CORONAE OF AR Lac AND ECLIPSE DIAGNOSIS OF SCALE HEIGHT by Drake, Jeremy J., Ratzlaff, Peter, Kashyap, Vinay, Huenemoerder, David P., Wargelin, Bradford J., Pease, Deron O.

“…Combined with older ASCA, Einstein, EXOSAT, ROSAT, and BeppoSAX observations, the data show that the level of quiescent coronal emission at X-ray wavelengths has remained remarkably constant over 33 yr, with no sign of variation due to magnetic cycles. …”
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SOUTH POLE TELESCOPE DETECTIONS OF THE PREVIOUSLY UNCONFIRMED PLANCK EARLY SUNYAEV-ZEL'DOVICH CLUSTERS IN THE SOUTHERN HEMISPHERE by Andersson, Karl

“…We also report X-ray luminosities calculated from ROSAT All-Sky Survey catalog counts, as well as optical and improved SZ coordinates for each candidate. …”
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Wide field x-ray telescope a moderate class mission by Murray, Stephen S., Giacconi, R., Ptak, A., Rosati, P., Weisskopf, M., Borgani, S., Jones, C., Parseschi, G., Tozzi, P., Gilli, R., Campana, S., Paolillo, M., Tagliaferri, G., Bautz, Marshall W., Vikhlinin, A., Hickox, R. C., Forman, W. R.

“…WFXT will perform three surveys that will cover most of the extragalactic sky to 100-1000 times the sensitivity of the ROSAT All Sky Survey, ≳ 2000 deg2 [deg superscript 2] to deep Chandra or XMM-Newton sensitivity, and ≳ 100 deg2 [deg superscript 2] to the deepest Chandra sensitivity. …”
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FERMI BUBBLES INFLATED BY WINDS LAUNCHED FROM THE HOT ACCRETION FLOW IN SGR A* by Mou, Guobin, Yuan, Feng, Bu, Defu, Sun, Mouyuan, Su, Meng

“…The main observational features of the Bubbles can be well explained. Specifically, the ROSAT X-ray features are interpreted by the shocked interstellar medium and the interaction region between the wind and CMZ gas. …”
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DISCOVERY OF A HIGHLY VARIABLE DIPPING ULTRALUMINOUS X-RAY SOURCE IN M94 by Lin, Dacheng, Irwin, Jimmy A., Webb, Natalie A., Barret, Didier, Remillard, Ronald A

“…The source has been observed by ROSAT, Chandra, and XMM-Newton on several occasions, exhibiting as a highly variable persistent source or a recurrent transient with a flux variation factor of gsim100, a high duty cycle (at least ~70%), and a peak luminosity of L X ~ 2 × 10[superscript 39] erg s[superscript –1] (0.2-10 keV, absorbed). …”
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GALAXY CLUSTERS DISCOVERED VIA THE SUNYAEV-ZEL’DOVICH EFFECT IN THE FIRST 720 SQUARE DEGREES OF THE SOUTH POLE TELESCOPE SURVEY by Andersson, Karl, Bautz, Marshall W., McDonald, Michael A.

“…Forty-five of the clusters have counterparts in the ROSAT bright or faint source catalogs from which we estimate X-ray fluxes. …”
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