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Is there a propeller neutron star in Cas?
Myron A. Smith, R. Lopes de Oliveira, C. Motch
Cas is the prototype of a small population of B0-B1.5 III-V classical Be (cBe) stars that emit anomalous and hard X-rays with a unique array of properties. Cas is known to…
The origin of the puzzling hard X-ray emission of Cassiopeiae
Christian Motch, Raimundo Lopes de Oliveira, Myron A. Smith
Massive B and Be stars produce X-rays from shocks in high velocity winds with temperatures of a few million degrees and maximum X-ray luminosities of 10 erg/s. Sur…
Characterization of the X-ray light curve of the gamma Cas-like B1e star HD110432
Myron A. Smith, Raimundo Lopes de Oliveira, Christian Motch
HD 110432 (BZ Cru; B1Ve) is the brightest member of a small group of "gamma Cas analogs" that emit copious hard X-ray flux, punctuated by ubiquitous "flares." To characterize the X…
gamma Cassiopeiae: an X-ray Be star with personality
Raimundo Lopes de Oliveira, Myron A. Smith, Christian Motch +1
gamma Cassiopeiae (gCas) is a B0.5e star with peculiar X-ray emission properties and yet the prototype of its own small class. In this paper we examine the X-ray spectra for a 2004…