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dc.contributor.authorSchinzel, F. K.
dc.contributor.authorTaylor, G. B.
dc.contributor.authorStockdale, C. J.
dc.contributor.authorGranot, J.
dc.contributor.authorRamirez-Ruiz, E.
dc.contributor.editorGalassi, M
dc.contributor.editorPalmer, D
dc.contributor.editorFenimore, E
dc.date.accessioned2011-10-20T13:01:09Z
dc.date.available2011-10-20T13:01:09Z
dc.date.issued2008
dc.identifier.citationSchinzel , F K , Taylor , G B , Stockdale , C J , Granot , J & Ramirez-Ruiz , E 2008 , Four epochs of VLBA/HSA observations of SN 2001em . in M Galassi , D Palmer & E Fenimore (eds) , Gamma-ray bursts 2007 : AIP Conference Proceedings . vol. 1000 , AIP Conference Proceedings , American Institute of Physics (AIP) , Melville , pp. 509-512 , GAMMA-RAY BURSTS 2007 , Santa Fe , United States , 5/11/07 . https://doi.org/10.1063/1.2943520
dc.identifier.citationconference
dc.identifier.isbn978-0-7354-0533-2
dc.identifier.otherPURE: 425831
dc.identifier.otherPURE UUID: e7a7305c-1e33-452f-9456-6db7ca02f702
dc.identifier.otherWOS: 000256301400114
dc.identifier.otherScopus: 84874829717
dc.identifier.urihttp://hdl.handle.net/2299/6746
dc.descriptionOriginal paper can be found at: http://proceedings.aip.org/proceedings/ Copyright AIP [Full text of this paper is not available in the UHRA]
dc.description.abstractSN 2001em is a peculiar supernova (SN) which has been reclassified from Type Ib/c to IIn. We deduced the limits for its proper motion as well as the expansion velocity by analysing four epochs of VLBI observations. Our 2 sigma upper limit of its proper motion is (23,000 30,000) km s(-1) and for the expansion velocity is 9000 km s(-1) with 95% confidence. Thus we confirm the analysis of Bietenholz & Bartel that this was not a jet-driven gamma my burst event. The supernova is unresolved 6 years after the explosion. We find no evidence for the existence of a jet. These values suggest interaction of the SN ejecta with a dense circumstellar medium. VLA observations of the flux density over 4 years of observations show a power law decay.en
dc.format.extent4
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofGamma-ray bursts 2007
dc.relation.ispartofseriesAIP Conference Proceedings
dc.subjectsupernova : core collapse
dc.subjecttype IIn
dc.subjectsn2001em
dc.subjecttechniques : image processing
dc.subjectVLBI
dc.subjectinstruments : VLBA
dc.titleFour epochs of VLBA/HSA observations of SN 2001emen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
rioxxterms.versionofrecordhttps://doi.org/10.1063/1.2943520
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


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