4 papers · 1 filter
High spectral and time resolution observations of the eclipsing polar RX J0719.2+6557
G. H. Tovmassian, P. Szkody, J. Greiner +7
We present phase-resolved spectral and multicolor CCD-photometric observations of the eclipsing polar RX J0719.2+6557 obtained with relatively high time (~600 sec/15 sec) and spect…
S 10943 Vulpeculae: A New ROSAT Selected Dwarf Nova, probably of SU Ursae Majoris Subclass
G. A. Richter, J. Greiner, P. Kroll
We have identified the ROSAT all-sky survey source RX J1953.1+2115 with a newly discovered dwarf novae (named S 10943 Vulpeculae) with a recurrence time of 83.6 days. With the expe…
Comment on the paper: ``The perturbative proton form factor reexamined'' by Kundu et al
J. Bolz, R. Jakob, P. Kroll +1
We point out some serious problems in the investigation of Kundu et al. which claims agreement with the existing data of the proton form factor, calculated without taking into acco…
A New Cataclysmic Variable RX J0757.0+6306: Candidate for the Shortest Period Intermediate Polar
G. H. Tovmassian, J. Greiner, P. Kroll +8
A new cataclysmic variable is identified as the optical counterpart of the faint and hard X-ray source RX J0757.0+6306 discovered during the ROSAT all-sky survey. Strong double-pea…