A study of the strong pulses detected from PSR B0656+14 using the Urumqi 25-m radio telescope at 1540 MHz
| Autor: | Huidong Hu, Jing Li, Maofei Qian, Guo-Cun Tao, Ali Esamdin, Na Wang |
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| Rok vydání: | 2012 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics FOS: Physical sciences Flux Astronomy and Astrophysics Astrophysics Astrophysics - Astrophysics of Galaxies Pulse (physics) Radio telescope Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Log-normal distribution Astrophysics - High Energy Astrophysical Phenomena Solar and Stellar Astrophysics (astro-ph.SR) |
| Zdroj: | Research in Astronomy and Astrophysics. 12:1649-1654 |
| ISSN: | 1674-4527 |
| DOI: | 10.1088/1674-4527/12/12/006 |
| Popis: | We report on the properties of strong pulses from PSR B0656+14 by analyzing the data obtained using Urumqi 25-m radio telescope at 1540 MHz from August 2007 to September 2010. In 44 hrs of observational data, a total of 67 pulses with signal-to-noise ratios above a 5-{\sigma} threshold were detected. The peak flux densities of these pulses are 58 to 194 times that of the average profile, and the pulse energies of them are 3 to 68 times that of the average pulse. These pulses are clustered around phases about 5 degrees ahead of the peak of the average profile. Comparing with the width of the average profile, they are relatively narrow, with the full widths at half-maximum range from 0.28 to 1.78 degrees. The distribution of pulse-energies of the pulses follows a lognormal distribution. These sporadic strong pulses detected from PSR B0656+14 are different in character from the typical giant pulses, and from its regular pulses. Comment: 6 pages, 3 figures, Accepted by RAA |
| Databáze: | OpenAIRE |
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