Two long-term intermittent pulsars discovered in the PALFA Survey
| العنوان: | Two long-term intermittent pulsars discovered in the PALFA Survey |
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| المؤلفون: | A. Brazier, P. Lazarus, Robert D. Ferdman, C. Patel, Fredrick A. Jenet, Andrew Lyne, Benjamin Knispel, E. Parent, Ryan Lynch, Ben Stappers, Benjamin William Allen, Scott M. Ransom, V. M. Kaspi, Fronefield Crawford, A-M Seymour, Shami Chatterjee, Kevin Stovall, Julia Deneva, Robert Wharton, Laura Spitler, Joseph K. Swiggum, F. Cardoso, E. C. Madsen, X. Siemens, J. M. Cordes, Fernando Camilo, Ingrid H. Stairs, Jason W. T. Hessels, Paul Scholz, Maura McLaughlin, J. van Leeuwen, Paulo C. C. Freire, Slavko Bogdanov, Wei Zhu |
| المساهمون: | High Energy Astrophys. & Astropart. Phys (API, FNWI) |
| المصدر: | Astrophysical Journal, 834(1):72. IOP Publishing Ltd. The Astrophysical Journal Lyne, A, Stappers, B, Freire, P C C, Hessels, J W T, Kaspi, V M, Allen, B, Bogdanov, S, Brazier, A, Camilo, F, Cardoso, F, Chatterjee, S, Cordes, J M, Crawford, F, Deneva, J S, Ferdman, R D, Jenet, F A, Knispel, B, Lazarus, P, van Leeuwen, J, Lynch, R, Madsen, E, McLaughlin, M, Parent, E, Patel, C, Ransom, S M, Scholz, P, Seymour, A-M, Siemens, X, Spitler, L G, Stairs, I, Stovall, K, Swiggum, J K, Wharton, R S & Zhu, W 2017, ' Two long-term intermittent pulsars discovered in the PALFA Survey ', The Astrophysical Journal, vol. 834, no. 1 . https://doi.org/10.3847/1538-4357/834/1/72 |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | High Energy Astrophysical Phenomena (astro-ph.HE), Physics, education.field_of_study, Astrophysics::High Energy Astrophysical Phenomena, Population, FOS: Physical sciences, Astronomy and Astrophysics, Active mode, Jodrell Bank Observatory, Astrophysics, 01 natural sciences, Term (time), law.invention, Telescope, Pulsar, 13. Climate action, Space and Planetary Science, law, Intermittency, 0103 physical sciences, Narrow range, 010306 general physics, education, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics |
| الوصف: | We report the discovery of two long-term intermittent radio pulsars in the ongoing Arecibo PALFA pulsar survey. Following discovery with the Arecibo Telescope, extended observations of these pulsars over several years at Jodrell Bank Observatory have revealed the details of their rotation and radiation properties. PSRs J1910+0517 and J1929+1357 show long-term extreme bi-modal intermittency, switching between active (ON) and inactive (OFF) emission states and indicating the presence of a large, hitherto unrecognised, underlying population of such objects. For PSR J1929+1357, the initial duty cycle was fON=0.008, but two years later this changed, quite abruptly, to fON=0.16. This is the first time that a significant evolution in the activity of an intermittent pulsar has been seen and we show that the spin-down rate of the pulsar is proportional to the activity. The spin-down rate of PSR J1929+1357 is increased by a factor of 1.8 when it is in active mode, similar to the increase seen in the other three known long-term intermittent pulsars. 21 pages, 7 figures, accepted by ApJ |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0004-637X |
| DOI: | 10.3847/1538-4357/834/1/72 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d71e174eee76d7fd612af4ac6024fcd https://ueaeprints.uea.ac.uk/id/eprint/67587/ |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....1d71e174eee76d7fd612af4ac6024fcd |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0004637X |
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| DOI: | 10.3847/1538-4357/834/1/72 |