dc.date.accessioned | 2017-08-14T13:38:38Z | |
dc.date.available | 2017-08-14T13:38:38Z | |
dc.date.created | 2015-06-17T09:03:19Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Cheung, Mark C. M. De Pontieu, Bart Walter Tarbell, Theodore D. Fu, Y. Tian, H. Testa, Paola Reeves, K. K. Martinez-Sykora, Juan Boerner, P. Wulser, J. P. Lemen, J. Title, Alan M. Hurlburt, N. Kleint, L. Kankelborg, C. Jaeggli, S. Golub, L. McKillop, S. Saar, S. Carlsson, Mats Hansteen, Viggo . Homologous helical jets: Observations by IRIS, SDO, and Hinode and magnetic modeling with data-driven simulations. The Astrophysical Journal. 2015, 801(2) | |
dc.identifier.uri | http://hdl.handle.net/10852/56994 | |
dc.description.abstract | We report on observations of recurrent jets by instruments on board the Interface Region Imaging Spectrograph, Solar Dynamics Observatory (SDO), and Hinode spacecraft. Over a 4 hr period on 2013 July 21, recurrent coronal jets were observed to emanate from NOAA Active Region 11793. Far-ultraviolet spectra probing plasma at transition region temperatures show evidence of oppositely directed flows with components reaching Doppler velocities of ±100 km s−1. Raster Doppler maps using a Si iv transition region line show all four jets to have helical motion of the same sense. Simultaneous observations of the region by SDO and Hinode show that the jets emanate from a source region comprising a pore embedded in the interior of a supergranule. The parasitic pore has opposite polarity flux compared to the surrounding network field. This leads to a spine-fan magnetic topology in the coronal field that is amenable to jet formation. Time-dependent data-driven simulations are used to investigate the underlying drivers for the jets. These numerical experiments show that the emergence of current-carrying magnetic field in the vicinity of the pore supplies the magnetic twist needed for recurrent helical jet formation.
Reproduced with permission from the Astrophysical Journal. © IOP Publishing | en_US |
dc.language | EN | |
dc.publisher | University of Chicago Press | |
dc.title | Homologous helical jets: Observations by IRIS, SDO, and Hinode and magnetic modeling with data-driven simulations | en_US |
dc.type | Journal article | en_US |
dc.creator.author | Cheung, Mark C. M. | |
dc.creator.author | De Pontieu, Bart Walter | |
dc.creator.author | Tarbell, Theodore D. | |
dc.creator.author | Fu, Y. | |
dc.creator.author | Tian, H. | |
dc.creator.author | Testa, Paola | |
dc.creator.author | Reeves, K. K. | |
dc.creator.author | Martinez-Sykora, Juan | |
dc.creator.author | Boerner, P. | |
dc.creator.author | Wulser, J. P. | |
dc.creator.author | Lemen, J. | |
dc.creator.author | Title, Alan M. | |
dc.creator.author | Hurlburt, N. | |
dc.creator.author | Kleint, L. | |
dc.creator.author | Kankelborg, C. | |
dc.creator.author | Jaeggli, S. | |
dc.creator.author | Golub, L. | |
dc.creator.author | McKillop, S. | |
dc.creator.author | Saar, S. | |
dc.creator.author | Carlsson, Mats | |
dc.creator.author | Hansteen, Viggo | |
cristin.unitcode | 185,15,3,0 | |
cristin.unitname | Institutt for teoretisk astrofysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 1248649 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The Astrophysical Journal&rft.volume=801&rft.spage=&rft.date=2015 | |
dc.identifier.jtitle | The Astrophysical Journal | |
dc.identifier.volume | 801 | |
dc.identifier.issue | 2 | |
dc.identifier.pagecount | 13 | |
dc.identifier.doi | http://dx.doi.org/10.1088/0004-637X/801/2/83 | |
dc.identifier.urn | URN:NBN:no-59717 | |
dc.type.document | Tidsskriftartikkel | en_US |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0004-637X | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/56994/2/Cheung_2015_ApJ_801_83.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | 83 | |