منابع مشابه
Origin of the Transient Unpulsed Radio Emission from the Psr B1259−63 Binary System
We discuss the interpretation of transient, unpulsed radio emission detected from the unique pulsar/Be-star binary system PSR B1259−63. Extensive monitoring of the 1994 and 1997 periastron passages has shown that the source flares over a 100-day interval around periastron, varying on time-scales as short as a day and peaking at 60 mJy (∼ 100 times the apastron flux density) at 1.4 GHz. Interpre...
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We present a detailed study of the single radio pulses of PSR B0656+14. The emission can be characterized by two separate populations of pulses: bright pulses have a narrow " spiky " appearance in contrast to the underlying weaker broad pulses. The shape of the pulse profile requires an unusually long timescale to achieve stability (over 25,000 pulses at 327 MHz) caused by spiky emission. The e...
متن کاملReversals of Radio Emission Direction in Psr B1822 09
The pulse profile of pulsar B1822 09 exhibits a very peculiar kind of mode changing: a “precursor” appearing just in front of the main pulse (MP) exhibits periods of nulling, during which an interpulse (IP) becomes detectable at a rotation phase separated by roughly 180 from the precursor. We propose that this bizarre phenomenon, which requires an information transfer between the two components...
متن کاملX-ray Emission from Psr 0355+54
We have obtained a 20 ks observation of PSR 0355+54 using the ROSAT PSPC. The pulsar is detected with a count rate of 4:2(1:3) 10 ?3 s ?1 above the background. While the 70 source counts are insuucient for spectral tting, we have derived source parameters for speciic cases of power law as well as blackbody spectra. For a Crab-like spectrum (photon index = 2) we nd L x (0:1 ? 2:4 keV) = 1:0 10 3...
متن کاملDiscovery of X - ray emission from the young radio pulsar PSR J 1357 − 6429
We present the first X-ray detection of the very young pulsar PSR J1357−6429 (characteristic age of 7.3 kyr) using data from the XMM-Newton and Chandra satellites. We found that the spectrum is well described by a power-law plus blackbody model, with photon index Γ = 1.4 and blackbody temperature kBT = 160 eV. For the estimated distance of 2.5 kpc, this corresponds to a 2–10 keV luminosity of ∼...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 2000
ISSN: 0252-9211
DOI: 10.1017/s0252921100060516