It was originally discovered in 1968.[1] In 2013 scientists at the University of Oxford, Hartebeesthoek Observatory and CSIRO announced that they had observed changes in the pulsar's spin rate and the shape of its radio pulse indicating that asteroids were encountering it, including one with a mass of about a billion tons.[3]
We think the pulsar's radio beam zaps the asteroid, vaporising it. But the vaporised particles are electrically charged and they slightly alter the process that creates the pulsar's beam.
The scientists suggested that the material blown out from the explosion which formed the pulsar could have fallen back towards it, developing a disk of debris including asteroids.[4]
Referencesedit
^ abATNF Pulsar Catalogue database entry. See Manchester, R. N.; et al. (2005). "The Australia Telescope National Facility Pulsar Catalogue". Astronomical Journal. 129 (4): 1993–2006. arXiv:astro-ph/0412641. Bibcode:2005AJ....129.1993M. doi:10.1086/428488. S2CID 121038776.
^ ab"Rocks Around The Clock: Star PSR J0738-4042 Is Constantly Pummelled By Asteroids". Science 2.0. 2014-02-20. Retrieved 2014-02-23.
^Brook, P. R.; Karastergiou, A.; Buchner, S.; Roberts, S. J.; Keith, M. J.; Johnston, S.; Shannon, R. M. (2014). "Evidence of an Asteroid Encountering a Pulsar". The Astrophysical Journal. 780 (2): L31. arXiv:1311.3541. Bibcode:2014ApJ...780L..31B. doi:10.1088/2041-8205/780/2/L31. S2CID 304268.
^. The Space Reporter. 2014-02-22. Archived from the original on 2014-03-01. Retrieved 2014-02-23.
This variable star–related article is a stub. You can help Wikipedia by expanding it.
j0738, 4042, first, pulsar, observed, have, been, affected, asteroids, observation, dataepoch, j2000, equinox, j2000constellation, puppisright, ascension, 329sdeclination, characteristicsspectral, type, pulsarastrometrydistance37, lydetailsrotation374, 9199850. PSR J0738 4042 is the first pulsar observed to have been affected by asteroids 2 PSR J0738 4042 Observation dataEpoch J2000 Equinox J2000Constellation PuppisRight ascension 07h 38m 32 329sDeclination 40 42 40 94 CharacteristicsSpectral type PulsarAstrometryDistance37 000 lyDetailsRotation374 919985032 ms 1 Database referencesSIMBADdataIt was originally discovered in 1968 1 In 2013 scientists at the University of Oxford Hartebeesthoek Observatory and CSIRO announced that they had observed changes in the pulsar s spin rate and the shape of its radio pulse indicating that asteroids were encountering it including one with a mass of about a billion tons 3 We think the pulsar s radio beam zaps the asteroid vaporising it But the vaporised particles are electrically charged and they slightly alter the process that creates the pulsar s beam Dr Ryan Shannon 2 The scientists suggested that the material blown out from the explosion which formed the pulsar could have fallen back towards it developing a disk of debris including asteroids 4 References edit a b ATNF Pulsar Catalogue database entry See Manchester R N et al 2005 The Australia Telescope National Facility Pulsar Catalogue Astronomical Journal 129 4 1993 2006 arXiv astro ph 0412641 Bibcode 2005AJ 129 1993M doi 10 1086 428488 S2CID 121038776 a b Rocks Around The Clock Star PSR J0738 4042 Is Constantly Pummelled By Asteroids Science 2 0 2014 02 20 Retrieved 2014 02 23 Brook P R Karastergiou A Buchner S Roberts S J Keith M J Johnston S Shannon R M 2014 Evidence of an Asteroid Encountering a Pulsar The Astrophysical Journal 780 2 L31 arXiv 1311 3541 Bibcode 2014ApJ 780L 31B doi 10 1088 2041 8205 780 2 L31 S2CID 304268 Star found being pounded by billion ton asteroid The Space Reporter 2014 02 22 Archived from the original on 2014 03 01 Retrieved 2014 02 23 nbsp This variable star related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title PSR J0738 4042 amp oldid 1141681975, wikipedia, wiki, book, books, library,
