Abstract
Archive for December, 2011
Distance indicators from colour-magnitude-diagrams: main sequence, red clump and tip of the RGB December 1st, 2011
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Thermodynamic Temperature Measurements Traceable to Photometric Standards December 1st, 2011
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Abstract
Calibration of Radiation Thermometers and Blackbodies in the Temperature Range from 160 °C to 420 °C December 1st, 2011
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Abstract
A Cryostat for Automated mK-Level Thermometer Calibrations from −202 °C to 250 °C December 1st, 2011
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Abstract
Nature of the soft x-ray excess in the spectrum of RX J1037.5-5647 December 1st, 2011
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The source responsible for the soft x-ray excess in the emission spectrum of the pulsar RX J1037.5-5647 is associated with
a hot spot on the surface of the neutron star near the base of an accretion column. The intensity of the emission from this
source, however, only undergoes small (on the order of 15%) variations, while the intensity of the hard component varies substantially
with the rotation period of the neutron star. We show that this situation can occur if the angle between the axis of rotation
and the magnetic axis of the neutron star is no more than 8°. The variation in the intensity of the hard component of the
radiation in this case is interpreted in terms of an anisotropy in the directional diagram. In this scenario, the angle of
inclination of the orbit of the binary system is close to 10°.
Content Type Journal ArticlePages 1-6DOI 10.1007/s10511-011-9196-3Authors
N. R. Ikhsanov, Main (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, RussiaN. G. Beskrovnaya, Main (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia
Journal AstrophysicsOnline ISSN 1573-8191Print ISSN 0571-7256
