Nielsen, Martin Bo

[["dc.bibliographiccitation.firstpage","119"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The Astrophysical Journal"],["dc.bibliographiccitation.volume","857"],["dc.contributor.author","Benomar, O."],["dc.contributor.author","Goupil, Mjo."],["dc.contributor.author","Belkacem, K."],["dc.contributor.author","Appourchaux, T."],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Bazot, M."],["dc.contributor.author","Gizon, Laurent"],["dc.contributor.author","Hanasoge, S."],["dc.contributor.author","Sreenivasan, K. R."],["dc.contributor.author","Marchand, B."],["dc.date.accessioned","2020-12-10T18:47:34Z"],["dc.date.available","2020-12-10T18:47:34Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.3847/1538-4357/aab9b7"],["dc.identifier.eissn","1538-4357"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78809"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Asymmetry of Line Profiles of Stellar Oscillations Measured by Kepler for Ensembles of Solar-like Oscillators: Impact on Mode Frequencies and Dependence on Effective Temperature"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","L9"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","619"],["dc.contributor.author","Bazot, M."],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Mary, D."],["dc.contributor.author","Christensen-Dalsgaard, J."],["dc.contributor.author","Benomar, O."],["dc.contributor.author","Petit, P."],["dc.contributor.author","Gizon, Laurent"],["dc.contributor.author","Sreenivasan, K. R."],["dc.contributor.author","White, T. R."],["dc.date.accessioned","2020-12-10T18:11:44Z"],["dc.date.available","2020-12-10T18:11:44Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1051/0004-6361/201834251"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74126"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Butterfly diagram of a Sun-like star observed using asteroseismology"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A125"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","623"],["dc.contributor.author","Bazot, M."],["dc.contributor.author","Benomar, O."],["dc.contributor.author","Christensen-Dalsgaard, J."],["dc.contributor.author","Gizon, Laurent"],["dc.contributor.author","Hanasoge, S."],["dc.contributor.author","Nielsen, M."],["dc.contributor.author","Petit, P."],["dc.contributor.author","Sreenivasan, K. R."],["dc.date.accessioned","2020-12-10T18:11:45Z"],["dc.date.available","2020-12-10T18:11:45Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1051/0004-6361/201834594"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74132"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Latitudinal differential rotation in the solar analogues 16 Cygni A and B"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3211"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Monthly Notices of the Royal Astronomical Society"],["dc.bibliographiccitation.lastpage","3226"],["dc.bibliographiccitation.volume","450"],["dc.contributor.author","Aigrain, S."],["dc.contributor.author","Llama, J."],["dc.contributor.author","Ceillier, T."],["dc.contributor.author","das Chagas, M. L."],["dc.contributor.author","Davenport, J. R. A."],["dc.contributor.author","Garcia, R. A."],["dc.contributor.author","Hay, K. L."],["dc.contributor.author","Lanza, A. F."],["dc.contributor.author","McQuillan, A."],["dc.contributor.author","Mazeh, T."],["dc.contributor.author","de Medeiros, J. R."],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Reinhold, T."],["dc.date.accessioned","2018-11-07T09:55:26Z"],["dc.date.available","2018-11-07T09:55:26Z"],["dc.date.issued","2015"],["dc.description.abstract","We present the results of a blind exercise to test the recoverability of stellar rotation and differential rotation in Kepler light curves. The simulated light curves lasted 1000 d and included activity cycles, Sun-like butterfly patterns, differential rotation and spot evolution. The range of rotation periods, activity levels and spot lifetime were chosen to be representative of the Kepler data of solar-like stars. Of the 1000 simulated light curves, 770 were injected into actual quiescent Kepler light curves to simulate Kepler noise. The test also included five 1000-d segments of the Sun's total irradiance variations at different points in the Sun's activity cycle. Five teams took part in the blind exercise, plus two teams who participated after the content of the light curves had been released. The methods used included Lomb-Scargle periodograms and variants thereof, autocorrelation function and wavelet-based analyses, plus spot modelling to search for differential rotation. The results show that the 'overall' period is well recovered for stars exhibiting low and moderate activity levels. Most teams reported values within 10 per cent of the true value in 70 per cent of the cases. There was, however, little correlation between the reported and simulated values of the differential rotation shear, suggesting that differential rotation studies based on full-disc light curves alone need to be treated with caution, at least for solar-type stars. The simulated light curves and associated parameters are available online for the community to test their own methods."],["dc.identifier.doi","10.1093/mnras/stv853"],["dc.identifier.isi","000356339300072"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36738"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","1365-2966"],["dc.relation.issn","0035-8711"],["dc.title","Testing the recovery of stellar rotation signals from Kepler light curves using a blind hare-and-hounds exercise"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Monthly Notices of the Royal Astronomical Society"],["dc.bibliographiccitation.volume","446"],["dc.contributor.author","Karoff, Christoffer"],["dc.contributor.author","Metcalfe, T. S."],["dc.contributor.author","Chaplin, W. J."],["dc.contributor.author","Frandsen, S."],["dc.contributor.author","Grundahl, F."],["dc.contributor.author","Kjeldsen, Hans"],["dc.contributor.author","Christensen-Dalsgaard, Joergen"],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Frimann, S."],["dc.contributor.author","Thygesen, A. O."],["dc.contributor.author","Arentoft, T."],["dc.contributor.author","Amby, T. M."],["dc.contributor.author","Sousa, S. G."],["dc.contributor.author","Buzasi, D. L."],["dc.date.accessioned","2018-11-07T10:02:16Z"],["dc.date.available","2018-11-07T10:02:16Z"],["dc.date.issued","2015"],["dc.format.extent","1139"],["dc.identifier.doi","10.1093/mnras/stu2114"],["dc.identifier.isi","000350272200002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38192"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","1365-2966"],["dc.relation.issn","0035-8711"],["dc.title","Sounding stellar cycles with Kepler - II. Ground-based observations (vol 433, pg 3227, 2013)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2882"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Monthly Notices of the Royal Astronomical Society"],["dc.bibliographiccitation.lastpage","2901"],["dc.bibliographiccitation.volume","471"],["dc.contributor.author","White, T. R."],["dc.contributor.author","Pope, B. J. S."],["dc.contributor.author","Antoci, V."],["dc.contributor.author","Pápics, P. I."],["dc.contributor.author","Aerts, C."],["dc.contributor.author","Gies, D. R."],["dc.contributor.author","Gordon, K."],["dc.contributor.author","Huber, D."],["dc.contributor.author","Schaefer, G. H."],["dc.contributor.author","Aigrain, S."],["dc.contributor.author","Albrecht, S."],["dc.contributor.author","Barclay, T."],["dc.contributor.author","Barentsen, G."],["dc.contributor.author","Beck, P. G."],["dc.contributor.author","Bedding, T. R."],["dc.contributor.author","Fredslund Andersen, M."],["dc.contributor.author","Grundahl, F."],["dc.contributor.author","Howell, S. B."],["dc.contributor.author","Ireland, M. J."],["dc.contributor.author","Murphy, S. J."],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Silva Aguirre, V."],["dc.contributor.author","Tuthill, P. G."],["dc.date.accessioned","2020-12-10T18:19:25Z"],["dc.date.available","2020-12-10T18:19:25Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1093/mnras/stx1050"],["dc.identifier.eissn","1365-2966"],["dc.identifier.issn","0035-8711"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75240"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Beyond the Kepler/K2 bright limit: variability in the seven brightest members of the Pleiades"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A6"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","603"],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Schunker, Hannah"],["dc.contributor.author","Gizon, Laurent"],["dc.contributor.author","Schou, Jesper"],["dc.contributor.author","Ball, W. H."],["dc.date.accessioned","2020-12-10T18:11:35Z"],["dc.date.available","2020-12-10T18:11:35Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1051/0004-6361/201730896"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74069"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Limits on radial differential rotation in Sun-like stars from parametric fits to oscillation power spectra"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","A85"],["dc.bibliographiccitation.journal","Astronomy and Astrophysics"],["dc.bibliographiccitation.volume","622"],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Gizon, Laurent"],["dc.contributor.author","Cameron, Robert H."],["dc.contributor.author","Miesch, M."],["dc.date.accessioned","2020-12-10T18:11:45Z"],["dc.date.available","2020-12-10T18:11:45Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1051/0004-6361/201834373"],["dc.identifier.eissn","1432-0746"],["dc.identifier.issn","0004-6361"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74129"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Starspot rotation rates versus activity cycle phase: Butterfly diagrams of Kepler stars are unlike that of the Sun"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1231"],["dc.bibliographiccitation.issue","6408"],["dc.bibliographiccitation.journal","Science"],["dc.bibliographiccitation.lastpage","1234"],["dc.bibliographiccitation.volume","361"],["dc.contributor.author","Benomar, O."],["dc.contributor.author","Bazot, M."],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Gizon, Laurent"],["dc.contributor.author","Sekii, T."],["dc.contributor.author","Takata, M."],["dc.contributor.author","Hotta, H."],["dc.contributor.author","Hanasoge, S."],["dc.contributor.author","Sreenivasan, K. R."],["dc.contributor.author","Christensen-Dalsgaard, J."],["dc.date.accessioned","2020-12-10T18:36:43Z"],["dc.date.available","2020-12-10T18:36:43Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1126/science.aao6571"],["dc.identifier.eissn","1095-9203"],["dc.identifier.issn","0036-8075"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/76717"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Asteroseismic detection of latitudinal differential rotation in 13 Sun-like stars"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3227"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Monthly Notices of the Royal Astronomical Society"],["dc.bibliographiccitation.lastpage","3238"],["dc.bibliographiccitation.volume","433"],["dc.contributor.author","Karoff, Christoffer"],["dc.contributor.author","Metcalfe, T. S."],["dc.contributor.author","Chaplin, W. J."],["dc.contributor.author","Frandsen, S."],["dc.contributor.author","Grundahl, F."],["dc.contributor.author","Kjeldsen, Hans"],["dc.contributor.author","Christensen-Dalsgaard, Joergen"],["dc.contributor.author","Nielsen, M. B."],["dc.contributor.author","Frimann, S."],["dc.contributor.author","Thygesen, A. O."],["dc.contributor.author","Arentoft, T."],["dc.contributor.author","Amby, T. M."],["dc.contributor.author","Sousa, S. G."],["dc.contributor.author","Buzasi, D. L."],["dc.date.accessioned","2018-11-07T09:21:58Z"],["dc.date.available","2018-11-07T09:21:58Z"],["dc.date.issued","2013"],["dc.description.abstract","We have monitored 20 Sun-like stars in the Kepler field-of-view for excess flux with the Fibre-fed Echelle Spectrograph on the Nordic Optical Telescope since the launch of Kepler spacecraft in 2009. These 20 stars were selected based on their asteroseismic properties to sample the parameter space (effective temperature, surface gravity, activity level, etc.) around the Sun. Though the ultimate goal is to improve stellar dynamo models, we focus the present paper on the combination of space-based and ground-based observations that can be used to test the age-rotation-activity relations. In this paper we describe the considerations behind the selection of these 20 Sun-like stars and present an initial asteroseismic analysis, which includes stellar age estimates. We also describe the observations from the Nordic Optical Telescope and present mean values of measured excess fluxes. These measurements are combined with estimates of the rotation periods obtained from a simple analysis of the modulation in photometric observations from Kepler caused by starspots, and asteroseismic determinations of stellar ages, to test relations between age, rotation and activity."],["dc.identifier.doi","10.1093/mnras/stt964"],["dc.identifier.isi","000322405900035"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29230"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","0035-8711"],["dc.title","Sounding stellar cycles with Kepler - II. Ground-based observations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]