7 papers
Discovery of a narrow line Seyfert 1 galaxy
K. P. Singh, L. R. Jones
We have discovered a Narrow-Line Seyfert 1 (NLS1) galaxy and identified it with an ultrasoft X-ray source RX 215319-1514 detected with ROSAT. We present its X-ray and optical spect…
An ultra-soft X-ray source (RX 215319-1514) and discovery of a narrow line Seyfert 1 galaxy
Kulinder Pal Singh, Laurence R. Jones
Two optical candidates - a galaxy and a star, are found within the error circle of the X-ray source position of an ultra-soft X-ray source discovered with ROSAT. Optical spectrosco…
An X-ray study of the dipping low mass X-ray binary XB 1323-619
M. Balucinska-Church, M. J. Church, T. Oosterbroek +3
During a BeppoSAX observation of the low-mass X-ray binary dip source XB 1323-619 a total of 10 type I X-ray bursts and parts of 12 intensity dips were observed. During non-burstin…
Progressive Covering of the Accretion Disk Corona during Dipping in the LMXB XB 1916-053
R. Morley, M. J. Church, A. P. Smale +1
Results are reported for analysis of the extensive Rosat observation of the dipping low mass X-ray binary XB 1916-053. Dipping is 100% deep showing that the emission regions are co…
Discovery of a new 170 s X-ray pulsar 1SAX J1324.4-6200
L. Angelini, M. J. Church, A. N. Parmar +2
We report the discovery with BeppoSAX of a new 170.84 +/- 0.04 s X-ray pulsar, 1SAX J1324.4-6200, found serendipitously in the field of the X-ray binary X1323-619 in 1997 August. T…
Progressive covering in dipping and Comptonization in the spectrum of XB1916-053 from the BeppoSAX observation
M. J. Church, A. N. Parmar, M. Balucinska-Church +3
We report results of a BeppoSAX observation of the low-mass X-ray binary (LMXB) dipping source XB 1916-053. The source joins the small group of LMXB detected at energies ~100 keV.…