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Article: GMRT discovery of PSR J1544+4937: An eclipsing black-widow pulsar identified with a fermi-lat source

TitleGMRT discovery of PSR J1544+4937: An eclipsing black-widow pulsar identified with a fermi-lat source
Authors
Issue Date2013
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2013, v. 773 n. 1 How to Cite?
AbstractUsing the Giant Metrewave Radio Telescope, we performed deep observations to search for radio pulsations in the directions of unidentified Fermi-Large Area Telescope γ-ray sources. We report the discovery of an eclipsing black-widow millisecond pulsar, PSR J1544+4937, identified with the uncataloged γ-ray source FERMI J1544.2+4941. This 2.16 ms pulsar is in a 2.9 hr compact circular orbit with a very low mass companion (Mc > 0.017 Mȯ). At 322 MHz this pulsar is found to be eclipsing for 13% of its orbit, whereas at 607 MHz the pulsar is detected throughout the low-frequency eclipse phase. Variations in the eclipse ingress phase are observed, indicating a clumpy and variable eclipsing medium. Moreover, additional short-duration absorption events are observed around the eclipse boundaries. Using the radio timing ephemeris we were able to detect γ-ray pulsations from this pulsar, confirming it as the source powering the γ-ray emission. © 2013. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/188436
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBhattacharyya, Ben_US
dc.contributor.authorRoy, Jen_US
dc.contributor.authorRay, PSen_US
dc.contributor.authorGupta, Yen_US
dc.contributor.authorBhattacharya, Den_US
dc.contributor.authorRomani, RWen_US
dc.contributor.authorRansom, SMen_US
dc.contributor.authorFerrara, ECen_US
dc.contributor.authorWolff, MTen_US
dc.contributor.authorCamilo, Fen_US
dc.contributor.authorCognard, Ien_US
dc.contributor.authorHarding, AKen_US
dc.contributor.authorDen Hartog, PRen_US
dc.contributor.authorJohnston, Sen_US
dc.contributor.authorKeith, Men_US
dc.contributor.authorKerr, Men_US
dc.contributor.authorMichelson, PFen_US
dc.contributor.authorSaz Parkinson, PMen_US
dc.contributor.authorWood, DLen_US
dc.contributor.authorWood, KSen_US
dc.date.accessioned2013-09-03T04:06:00Z-
dc.date.available2013-09-03T04:06:00Z-
dc.date.issued2013en_US
dc.identifier.citationAstrophysical Journal Letters, 2013, v. 773 n. 1en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/188436-
dc.description.abstractUsing the Giant Metrewave Radio Telescope, we performed deep observations to search for radio pulsations in the directions of unidentified Fermi-Large Area Telescope γ-ray sources. We report the discovery of an eclipsing black-widow millisecond pulsar, PSR J1544+4937, identified with the uncataloged γ-ray source FERMI J1544.2+4941. This 2.16 ms pulsar is in a 2.9 hr compact circular orbit with a very low mass companion (Mc > 0.017 Mȯ). At 322 MHz this pulsar is found to be eclipsing for 13% of its orbit, whereas at 607 MHz the pulsar is detected throughout the low-frequency eclipse phase. Variations in the eclipse ingress phase are observed, indicating a clumpy and variable eclipsing medium. Moreover, additional short-duration absorption events are observed around the eclipse boundaries. Using the radio timing ephemeris we were able to detect γ-ray pulsations from this pulsar, confirming it as the source powering the γ-ray emission. © 2013. The American Astronomical Society. All rights reserved.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_US
dc.relation.ispartofAstrophysical Journal Lettersen_US
dc.titleGMRT discovery of PSR J1544+4937: An eclipsing black-widow pulsar identified with a fermi-lat sourceen_US
dc.typeArticleen_US
dc.identifier.emailSaz Parkinson, PM: pablosp@hku.hken_US
dc.identifier.authoritySaz Parkinson, PM=rp01803en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1088/2041-8205/773/1/L12en_US
dc.identifier.scopuseid_2-s2.0-84881129600en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84881129600&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume773en_US
dc.identifier.issue1en_US
dc.identifier.isiWOS:000322455600012-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridBhattacharyya, B=23466591900en_US
dc.identifier.scopusauthoridRoy, J=35079361700en_US
dc.identifier.scopusauthoridRay, PS=7401892043en_US
dc.identifier.scopusauthoridGupta, Y=7102638804en_US
dc.identifier.scopusauthoridBhattacharya, D=7201932020en_US
dc.identifier.scopusauthoridRomani, RW=35248859100en_US
dc.identifier.scopusauthoridRansom, SM=7005562794en_US
dc.identifier.scopusauthoridFerrara, EC=7005472148en_US
dc.identifier.scopusauthoridWolff, MT=7403308674en_US
dc.identifier.scopusauthoridCamilo, F=7006263946en_US
dc.identifier.scopusauthoridCognard, I=6602462872en_US
dc.identifier.scopusauthoridHarding, AK=7202709535en_US
dc.identifier.scopusauthoridDen Hartog, PR=6603708101en_US
dc.identifier.scopusauthoridJohnston, S=7401782039en_US
dc.identifier.scopusauthoridKeith, M=24829229000en_US
dc.identifier.scopusauthoridKerr, M=55555633400en_US
dc.identifier.scopusauthoridMichelson, PF=35230455000en_US
dc.identifier.scopusauthoridSaz Parkinson, PM=8948464400en_US
dc.identifier.scopusauthoridWood, DL=44561584300en_US
dc.identifier.scopusauthoridWood, KS=44561584300en_US

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