منابع مشابه
Radio pulsar microstructure at 1 . 41 and 4 . 85 GHz
We report on observations of microstructure at 4.85 and 1.41 GHz of pulsars strong enough for the observation of single pulses with time resolution between 7 µs and 160 µs. All five pulsars observed at 4.85 GHz show microstructure in a large fraction of their pulses. We confirm that microstructure seems to be a common property of the pulsar emission mechanism and not only an additional feature ...
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Pulsar research must be considered 35 years after the detection of pulsars a mature science, where the basic questions have been raised and discussed. One would hope that many if not all generic and important problems have found some kind of answer and that scientific work can concentrate now on specific details requiring more in depth investigation. We know, however, that this picture is not t...
متن کاملPulsar spectra of radio emission
We have collected pulsar flux density observations and compiled spectra of 281 objects. The database of Lorimer et al. (1995) has been extended to frequencies higher than 1.4 GHz and lower than 300 MHz. Our results show that above 100 MHz the spectra of the majority of pulsars can be described by a simple power law with average value of spectral index < α >= −1.8 ± 0.2. A rigorous analysis of s...
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An analysis of four glitches observed in the pulsar B1822-09 during the period 1994 1999 is presented. The main distinguishing feature of these glitches is that the sudden increase in rotational frequency is accompanied by a decrease in the frequency derivative. The largest change of the frequency derivative was measured in the fourth glitch. This glitch occurred around MJD 51054 and was charac...
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Microtubules turn over rapidly arc Kirschner recalls that the mid-1980s “was a very innovative time.” While the era was giving rise to stonewashed jeans and rap music, cell biology was entering new territory as it finally went molecular. For cell biologists who, like Kirschner, were interested in the cytoskeleton, there was an even more exciting possibility: the modification of interesting prot...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20066125