Friedrich, Sarah

[["dc.bibliographiccitation.firstpage","1525"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Clinical Medicine"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Voormolen, Daphne C."],["dc.contributor.author","Zeldovich, Marina"],["dc.contributor.author","Haagsma, Juanita A."],["dc.contributor.author","Polinder, Suzanne"],["dc.contributor.author","Friedrich, Sarah"],["dc.contributor.author","Maas, Andrew I. R."],["dc.contributor.author","Wilson, Lindsay"],["dc.contributor.author","Steyerberg, Ewout W."],["dc.contributor.author","Covic, Amra"],["dc.contributor.author","Andelic, Nada"],["dc.contributor.author","Plass, Anne Marie"],["dc.contributor.author","Wu, Yi-Jhen"],["dc.contributor.author","Asendorf, Thomas"],["dc.contributor.author","von Steinbüechel, Nicole"],["dc.date.accessioned","2021-04-14T08:26:23Z"],["dc.date.available","2021-04-14T08:26:23Z"],["dc.date.issued","2020"],["dc.description.sponsorship","Seventh Framework Programme"],["dc.identifier.doi","10.3390/jcm9051525"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81924"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.publisher","MDPI"],["dc.relation.eissn","2077-0383"],["dc.rights","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Outcomes after Complicated and Uncomplicated Mild Traumatic Brain Injury at Three-and Six-Months Post-Injury: Results from the CENTER-TBI Study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","519"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.lastpage","523"],["dc.bibliographiccitation.volume","383"],["dc.contributor.author","Jordan, S."],["dc.contributor.author","Friedrich, Sarah"],["dc.date.accessioned","2018-11-07T10:32:03Z"],["dc.date.available","2018-11-07T10:32:03Z"],["dc.date.issued","2002"],["dc.description.abstract","We present highly time resolved circular-polarization and flux spectra of the magnetic white dwarf LP 790-29 taken with the VLT UT1 in order to test the hypothesis that LP 790-29 is a fast rotator with a period of the order of seconds to minutes. Due to low time resolution of former observations this might have been overlooked - leading to the conclusion that LP790-29 has a rotational period of over 100 years. The optical spectrum exhibits one prominent absorption feature with minima at about 4500, 4950, and 5350 Angstrom, which are most likely C-2 Swan-bands shifted by about 180 Angstrom in a magnetic field between 50 MG and 200 MG. At the position of the absorption structures the degree of circular polarization varies between -1% and +1%, whereas it amounts to +8 to +10% in the blue and red continuum. With this very high degree of polarization LP790-29 is very well suited to a search for short time variations, since a variation of several percent in the polarization can be expected for a magnetic field oblique to the rotational axis. From our analysis we conclude that variations on time scales from 50 to 2500 s must have amplitudes less than or similar to0.7% in the continuum and less than or similar to2% in the strongest absorption feature at 4950 Angstrom. While no short-term variations could be found a careful comparison of our polarization data of LP790-29 with those in the literatures indicates significant variations on time scales of decades with a possible period of about 24-28 years."],["dc.identifier.doi","10.1051/0004-6361:20011684"],["dc.identifier.isi","000174184400012"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9724"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/44254"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1432-0746"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Search for variations in circular-polarization spectra of the magnetic white dwarf LP 790-29"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]