dc.contributor.author | Schinzel, F. K. | |
dc.contributor.author | Taylor, G. B. | |
dc.contributor.author | Stockdale, C. J. | |
dc.contributor.author | Granot, J. | |
dc.contributor.author | Ramirez-Ruiz, E. | |
dc.contributor.editor | Galassi, M | |
dc.contributor.editor | Palmer, D | |
dc.contributor.editor | Fenimore, E | |
dc.date.accessioned | 2011-10-20T13:01:09Z | |
dc.date.available | 2011-10-20T13:01:09Z | |
dc.date.issued | 2008 | |
dc.identifier.citation | Schinzel , 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.citation | conference | |
dc.identifier.isbn | 978-0-7354-0533-2 | |
dc.identifier.other | PURE: 425831 | |
dc.identifier.other | PURE UUID: e7a7305c-1e33-452f-9456-6db7ca02f702 | |
dc.identifier.other | WOS: 000256301400114 | |
dc.identifier.other | Scopus: 84874829717 | |
dc.identifier.uri | http://hdl.handle.net/2299/6746 | |
dc.description | Original 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.abstract | SN 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.extent | 4 | |
dc.language.iso | eng | |
dc.publisher | American Institute of Physics (AIP) | |
dc.relation.ispartof | Gamma-ray bursts 2007 | |
dc.relation.ispartofseries | AIP Conference Proceedings | |
dc.subject | supernova : core collapse | |
dc.subject | type IIn | |
dc.subject | sn2001em | |
dc.subject | techniques : image processing | |
dc.subject | VLBI | |
dc.subject | instruments : VLBA | |
dc.title | Four epochs of VLBA/HSA observations of SN 2001em | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
rioxxterms.versionofrecord | https://doi.org/10.1063/1.2943520 | |
rioxxterms.type | Other | |
herts.preservation.rarelyaccessed | true | |