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Article: Pulsar timing at Urumqi Astronomical Observatory: Observing system and results

TitlePulsar timing at Urumqi Astronomical Observatory: Observing system and results
Authors
KeywordsAstronomical data bases: miscellaneous
Pulsars: general
Issue Date2001
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/MNR
Citation
Monthly Notices Of The Royal Astronomical Society, 2001, v. 328 n. 3, p. 855-866 How to Cite?
AbstractA pulsar timing system has been operating in the 18-cm band at the Urumqi Astronomical Observatory 25-m telescope since mid-1999. Frequency resolution allowing de-dispersion of the pulsar signals is provided by a 2 × 128 × 2.5 MHz filterbank/digitizer system. Observations of 74 pulsars over more than 12 months have resulted in updated pulsar periods and period derivatives, as well as improved positions. Comparison with previous measurements showed that the changes in period and period derivative tend to have the same sign and to be correlated in amplitude. A model based on unseen glitches gives a good explanation of the observed changes, suggesting that long-term fluctuations in period and period derivatives are dominated by glitches. In 2000 July, we detected a glitch of relative amplitude Δν/ν ∼ 24 × 10-9 in the Crab pulsar. The post-glitch decay appears similar to other large Crab glitches.
Persistent Identifierhttp://hdl.handle.net/10722/80762
ISSN
2015 Impact Factor: 4.952
2015 SCImago Journal Rankings: 2.806
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Nen_HK
dc.contributor.authorManchester, RNen_HK
dc.contributor.authorZhang, Jen_HK
dc.contributor.authorWu, XJen_HK
dc.contributor.authorYusup, Aen_HK
dc.contributor.authorLyne, AGen_HK
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorChen, MZen_HK
dc.date.accessioned2010-09-06T08:09:59Z-
dc.date.available2010-09-06T08:09:59Z-
dc.date.issued2001en_HK
dc.identifier.citationMonthly Notices Of The Royal Astronomical Society, 2001, v. 328 n. 3, p. 855-866en_HK
dc.identifier.issn0035-8711en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80762-
dc.description.abstractA pulsar timing system has been operating in the 18-cm band at the Urumqi Astronomical Observatory 25-m telescope since mid-1999. Frequency resolution allowing de-dispersion of the pulsar signals is provided by a 2 × 128 × 2.5 MHz filterbank/digitizer system. Observations of 74 pulsars over more than 12 months have resulted in updated pulsar periods and period derivatives, as well as improved positions. Comparison with previous measurements showed that the changes in period and period derivative tend to have the same sign and to be correlated in amplitude. A model based on unseen glitches gives a good explanation of the observed changes, suggesting that long-term fluctuations in period and period derivatives are dominated by glitches. In 2000 July, we detected a glitch of relative amplitude Δν/ν ∼ 24 × 10-9 in the Crab pulsar. The post-glitch decay appears similar to other large Crab glitches.en_HK
dc.languageengen_HK
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/MNRen_HK
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen_HK
dc.subjectAstronomical data bases: miscellaneousen_HK
dc.subjectPulsars: generalen_HK
dc.titlePulsar timing at Urumqi Astronomical Observatory: Observing system and resultsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0035-8711&volume=328&spage=855&epage=866&date=2001&atitle=Pulsar+timing+at+Urumqi+Astronomical+Observatory:+Observing+system+and+resultsen_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1046/j.1365-8711.2001.04926.xen_HK
dc.identifier.scopuseid_2-s2.0-0042736573en_HK
dc.identifier.hkuros64920en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0042736573&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume328en_HK
dc.identifier.issue3en_HK
dc.identifier.spage855en_HK
dc.identifier.epage866en_HK
dc.identifier.isiWOS:000172925600018-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridWang, N=7404340765en_HK
dc.identifier.scopusauthoridManchester, RN=7004270810en_HK
dc.identifier.scopusauthoridZhang, J=7601344415en_HK
dc.identifier.scopusauthoridWu, XJ=7407063694en_HK
dc.identifier.scopusauthoridYusup, A=6603214356en_HK
dc.identifier.scopusauthoridLyne, AG=23044691300en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridChen, MZ=7406348468en_HK

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