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Article: Observing supernova 1987A with the refurbished hubble space telescope

TitleObserving supernova 1987A with the refurbished hubble space telescope
Authors
KeywordsAstrophysics
Electromagnetic field
Isotropy
Satellite imagery
Space technology
Issue Date2010
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 2010, v. 329 n. 5999, p. 1624-1627 How to Cite?
AbstractObservations with the Hubble Space Telescope (HST), conducted since 1990, now offer an unprecedented glimpse into fast astrophysical shocks in the young remnant of supernova 1987A. Comparing observations taken in 2010 with the use of the refurbished instruments on HST with data taken in 2004, just before the Space Telescope Imaging Spectrograph failed, we find that the Lyα and Hα lines from shock emission continue to brighten, whereas their maximum velocities continue to decrease. We observe broad, blueshifted Lyα, which we attribute to resonant scattering of photons emitted from hot spots on the equatorial ring. We also detect N v λλ1239, 1243 angstrom line emission, but only to the red of Lyα. The profiles of the N v lines differ markedly from that of Hα, suggesting that the N 4+ ions are scattered and accelerated by turbulent electromagnetic fields that isotropize the ions in the collisionless shock.
Persistent Identifierhttp://hdl.handle.net/10722/145444
ISSN
2015 Impact Factor: 34.661
2015 SCImago Journal Rankings: 13.217
ISI Accession Number ID
Funding AgencyGrant Number
Space Telescope Science InstituteGO-11181
NASANAS5-26555
Funding Information:

K.F. thanks M. Beasley for enjoyable discussions. Support for this research was provided by NASA through grant GO-11181 from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, under NASA contract NAS5-26555.

References

 

DC FieldValueLanguage
dc.contributor.authorFrance, Ken_HK
dc.contributor.authorMcCray, Ren_HK
dc.contributor.authorHeng, Ken_HK
dc.contributor.authorKirshner, RPen_HK
dc.contributor.authorChallis, Pen_HK
dc.contributor.authorBouchet, Pen_HK
dc.contributor.authorCrotts, Aen_HK
dc.contributor.authorDwek, Een_HK
dc.contributor.authorFransson, Cen_HK
dc.contributor.authorGarnavich, PMen_HK
dc.contributor.authorLarsson, Jen_HK
dc.contributor.authorLawrence, SSen_HK
dc.contributor.authorLundqvist, Pen_HK
dc.contributor.authorPanagia, Nen_HK
dc.contributor.authorPun, CSJen_HK
dc.contributor.authorSmith, Nen_HK
dc.contributor.authorSollerman, Jen_HK
dc.contributor.authorSonneborn, Gen_HK
dc.contributor.authorStocke, JTen_HK
dc.contributor.authorWang, Len_HK
dc.contributor.authorWheeler, JCen_HK
dc.date.accessioned2012-02-22T06:57:20Z-
dc.date.available2012-02-22T06:57:20Z-
dc.date.issued2010en_HK
dc.identifier.citationScience, 2010, v. 329 n. 5999, p. 1624-1627en_HK
dc.identifier.issn0036-8075en_HK
dc.identifier.urihttp://hdl.handle.net/10722/145444-
dc.description.abstractObservations with the Hubble Space Telescope (HST), conducted since 1990, now offer an unprecedented glimpse into fast astrophysical shocks in the young remnant of supernova 1987A. Comparing observations taken in 2010 with the use of the refurbished instruments on HST with data taken in 2004, just before the Space Telescope Imaging Spectrograph failed, we find that the Lyα and Hα lines from shock emission continue to brighten, whereas their maximum velocities continue to decrease. We observe broad, blueshifted Lyα, which we attribute to resonant scattering of photons emitted from hot spots on the equatorial ring. We also detect N v λλ1239, 1243 angstrom line emission, but only to the red of Lyα. The profiles of the N v lines differ markedly from that of Hα, suggesting that the N 4+ ions are scattered and accelerated by turbulent electromagnetic fields that isotropize the ions in the collisionless shock.en_HK
dc.languageeng-
dc.publisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.orgen_HK
dc.relation.ispartofScienceen_HK
dc.rightsScience. Copyright © American Association for the Advancement of Science.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAstrophysics-
dc.subjectElectromagnetic field-
dc.subjectIsotropy-
dc.subjectSatellite imagery-
dc.subjectSpace technology-
dc.titleObserving supernova 1987A with the refurbished hubble space telescopeen_HK
dc.typeArticleen_HK
dc.identifier.emailPun, CSJ: jcspun@hkucc.hku.hken_HK
dc.identifier.authorityPun, CSJ=rp00772en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1126/science.1192134en_HK
dc.identifier.pmid20813921-
dc.identifier.scopuseid_2-s2.0-77957374252en_HK
dc.identifier.hkuros183680-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77957374252&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume329en_HK
dc.identifier.issue5999en_HK
dc.identifier.spage1624en_HK
dc.identifier.epage1627en_HK
dc.identifier.isiWOS:000282098100034-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridFrance, K=7003729615en_HK
dc.identifier.scopusauthoridMcCray, R=35954431900en_HK
dc.identifier.scopusauthoridHeng, K=23989037500en_HK
dc.identifier.scopusauthoridKirshner, RP=35277140000en_HK
dc.identifier.scopusauthoridChallis, P=7004555495en_HK
dc.identifier.scopusauthoridBouchet, P=7006076277en_HK
dc.identifier.scopusauthoridCrotts, A=35241689000en_HK
dc.identifier.scopusauthoridDwek, E=7004165539en_HK
dc.identifier.scopusauthoridFransson, C=7004051800en_HK
dc.identifier.scopusauthoridGarnavich, PM=7006524172en_HK
dc.identifier.scopusauthoridLarsson, J=16042791200en_HK
dc.identifier.scopusauthoridLawrence, SS=7202646485en_HK
dc.identifier.scopusauthoridLundqvist, P=7004499555en_HK
dc.identifier.scopusauthoridPanagia, N=35400629400en_HK
dc.identifier.scopusauthoridPun, CSJ=7003931846en_HK
dc.identifier.scopusauthoridSmith, N=7403172437en_HK
dc.identifier.scopusauthoridSollerman, J=6603947073en_HK
dc.identifier.scopusauthoridSonneborn, G=7006137500en_HK
dc.identifier.scopusauthoridStocke, JT=7006249135en_HK
dc.identifier.scopusauthoridWang, L=36698455000en_HK
dc.identifier.scopusauthoridWheeler, JC=7403110438en_HK

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