Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?
Evidence for the presence of ion cyclotron waves (ICWs), driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurem...
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| Veröffentlicht in: | The Astrophysical journal 2023-02, Vol.944 (2), p.227 |
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| creator | Telloni, Daniele Zank, Gary P. Adhikari, Laxman Zhao, Lingling Susino, Roberto Antonucci, Ester Fineschi, Silvano Stangalini, Marco Grimani, Catia Sorriso-Valvo, Luca Verscharen, Daniel Marino, Raffaele Giordano, Silvio D’Amicis, Raffaella Perrone, Denise Carbone, Francesco Liberatore, Alessandro Bruno, Roberto Zimbardo, Gaetano Romoli, Marco Andretta, Vincenzo Da Deppo, Vania Heinzel, Petr Moses, John D. Naletto, Giampiero Nicolini, Gianalfredo Spadaro, Daniele Teriaca, Luca Burtovoi, Aleksandr De Leo, Yara Jerse, Giovanna Landini, Federico Pancrazzi, Maurizio Sasso, Clementina Slemer, Alessandra |
| description | Evidence for the presence of ion cyclotron waves (ICWs), driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurements of the solar wind can be linked with the large-scale structures of the solar corona. The results suggest that the dynamics of the current sheet layers generates turbulence, which in turn creates a sufficiently strong temperature anisotropy to make the solar-wind plasma unstable to anisotropy-driven instabilities such as the Alfvén ion cyclotron, mirror-mode, and firehose instabilities. The study of the polarization state of high-frequency magnetic fluctuations reveals that ICWs are indeed present along the current sheet, thus linking the magnetic topology of the remotely imaged coronal source regions with the wave bursts observed in situ. The present results may allow improvement of state-of-the-art models based on the ion cyclotron mechanism, providing new insights into the processes involved in coronal heating. |
| doi_str_mv | 10.3847/1538-4357/acb693 |
| format | Article |
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By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurements of the solar wind can be linked with the large-scale structures of the solar corona. The results suggest that the dynamics of the current sheet layers generates turbulence, which in turn creates a sufficiently strong temperature anisotropy to make the solar-wind plasma unstable to anisotropy-driven instabilities such as the Alfvén ion cyclotron, mirror-mode, and firehose instabilities. The study of the polarization state of high-frequency magnetic fluctuations reveals that ICWs are indeed present along the current sheet, thus linking the magnetic topology of the remotely imaged coronal source regions with the wave bursts observed in situ. The present results may allow improvement of state-of-the-art models based on the ion cyclotron mechanism, providing new insights into the processes involved in coronal heating.</description><identifier>ISSN: 0004-637X</identifier><identifier>ISSN: 1538-4357</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.3847/1538-4357/acb693</identifier><language>eng</language><publisher>Philadelphia: The American Astronomical Society</publisher><subject>Alfven waves ; Anisotropy ; Astrophysics ; Corona ; Coronagraphic imaging ; Coronagraphs ; Coronal heating ; Current sheets ; Cyclotrons ; Heliosphere ; Interplanetary turbulence ; Ion cyclotron waves ; Ions ; Magnetic variations ; Magnetohydrodynamics ; Metis ; Physics ; Remote observing ; Solar corona ; Solar coronal heating ; Solar Orbiter (ESA) ; Solar orbits ; Solar probes ; Solar wind ; Space plasmas ; Topology ; Turbulence</subject><ispartof>The Astrophysical journal, 2023-02, Vol.944 (2), p.227</ispartof><rights>2023. The Author(s). Published by the American Astronomical Society.</rights><rights>2023. The Author(s). Published by the American Astronomical Society. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). 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J</addtitle><description>Evidence for the presence of ion cyclotron waves (ICWs), driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurements of the solar wind can be linked with the large-scale structures of the solar corona. The results suggest that the dynamics of the current sheet layers generates turbulence, which in turn creates a sufficiently strong temperature anisotropy to make the solar-wind plasma unstable to anisotropy-driven instabilities such as the Alfvén ion cyclotron, mirror-mode, and firehose instabilities. The study of the polarization state of high-frequency magnetic fluctuations reveals that ICWs are indeed present along the current sheet, thus linking the magnetic topology of the remotely imaged coronal source regions with the wave bursts observed in situ. 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Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?</title><author>Telloni, Daniele ; Zank, Gary P. ; Adhikari, Laxman ; Zhao, Lingling ; Susino, Roberto ; Antonucci, Ester ; Fineschi, Silvano ; Stangalini, Marco ; Grimani, Catia ; Sorriso-Valvo, Luca ; Verscharen, Daniel ; Marino, Raffaele ; Giordano, Silvio ; D’Amicis, Raffaella ; Perrone, Denise ; Carbone, Francesco ; Liberatore, Alessandro ; Bruno, Roberto ; Zimbardo, Gaetano ; Romoli, Marco ; Andretta, Vincenzo ; Da Deppo, Vania ; Heinzel, Petr ; Moses, John D. ; Naletto, Giampiero ; Nicolini, Gianalfredo ; Spadaro, Daniele ; Teriaca, Luca ; Burtovoi, Aleksandr ; De Leo, Yara ; Jerse, Giovanna ; Landini, Federico ; Pancrazzi, Maurizio ; Sasso, Clementina ; Slemer, 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Alessandra</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?</atitle><jtitle>The Astrophysical journal</jtitle><stitle>APJ</stitle><addtitle>Astrophys. J</addtitle><date>2023-02-01</date><risdate>2023</risdate><volume>944</volume><issue>2</issue><spage>227</spage><pages>227-</pages><issn>0004-637X</issn><issn>1538-4357</issn><eissn>1538-4357</eissn><abstract>Evidence for the presence of ion cyclotron waves (ICWs), driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurements of the solar wind can be linked with the large-scale structures of the solar corona. The results suggest that the dynamics of the current sheet layers generates turbulence, which in turn creates a sufficiently strong temperature anisotropy to make the solar-wind plasma unstable to anisotropy-driven instabilities such as the Alfvén ion cyclotron, mirror-mode, and firehose instabilities. The study of the polarization state of high-frequency magnetic fluctuations reveals that ICWs are indeed present along the current sheet, thus linking the magnetic topology of the remotely imaged coronal source regions with the wave bursts observed in situ. The present results may allow improvement of state-of-the-art models based on the ion cyclotron mechanism, providing new insights into the processes involved in coronal heating.</abstract><cop>Philadelphia</cop><pub>The American Astronomical Society</pub><doi>10.3847/1538-4357/acb693</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-2789-816X</orcidid><orcidid>https://orcid.org/0000-0002-0497-1096</orcidid><orcidid>https://orcid.org/0000-0002-5163-5837</orcidid><orcidid>https://orcid.org/0000-0002-3789-2482</orcidid><orcidid>https://orcid.org/0000-0002-6710-8142</orcidid><orcidid>https://orcid.org/0000-0002-9459-3841</orcidid><orcidid>https://orcid.org/0000-0003-4155-6542</orcidid><orcidid>https://orcid.org/0000-0003-2426-2112</orcidid><orcidid>https://orcid.org/0000-0002-5467-6386</orcidid><orcidid>https://orcid.org/0000-0001-6273-8738</orcidid><orcidid>https://orcid.org/0000-0003-1059-4853</orcidid><orcidid>https://orcid.org/0000-0002-3559-5273</orcidid><orcidid>https://orcid.org/0000-0001-8244-9749</orcidid><orcidid>https://orcid.org/0000-0002-4642-6192</orcidid><orcidid>https://orcid.org/0000-0001-9921-1198</orcidid><orcidid>https://orcid.org/0000-0002-1017-7163</orcidid><orcidid>https://orcid.org/0000-0003-2647-117X</orcidid><orcidid>https://orcid.org/0000-0002-9207-2647</orcidid><orcidid>https://orcid.org/0000-0003-2007-3138</orcidid><orcidid>https://orcid.org/0000-0003-1549-5256</orcidid><orcidid>https://orcid.org/0000-0002-4299-0490</orcidid><orcidid>https://orcid.org/0000-0002-3468-8566</orcidid><orcidid>https://orcid.org/0000-0001-9670-2063</orcidid><orcidid>https://orcid.org/0000-0002-5981-7758</orcidid><orcidid>https://orcid.org/0000-0001-7762-280X</orcidid><orcidid>https://orcid.org/0000-0003-3517-8688</orcidid><orcidid>https://orcid.org/0000-0002-6433-7767</orcidid><orcidid>https://orcid.org/0000-0002-2152-0115</orcidid><orcidid>https://orcid.org/0000-0001-7298-2320</orcidid><orcidid>https://orcid.org/0000-0002-8734-808X</orcidid><orcidid>https://orcid.org/0000-0002-0016-7594</orcidid><orcidid>https://orcid.org/0000-0002-5365-7546</orcidid><orcidid>https://orcid.org/0000-0002-5778-2600</orcidid><orcidid>https://orcid.org/0000-0002-0764-7929</orcidid><orcidid>https://orcid.org/0000-0003-1962-9741</orcidid><orcidid>https://orcid.org/0000-0002-2355-2671</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0004-637X |
| ispartof | The Astrophysical journal, 2023-02, Vol.944 (2), p.227 |
| issn | 0004-637X 1538-4357 1538-4357 |
| language | eng |
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| source | IOP Publishing Free Content; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection; SWEPUB Freely available online |
| subjects | Alfven waves Anisotropy Astrophysics Corona Coronagraphic imaging Coronagraphs Coronal heating Current sheets Cyclotrons Heliosphere Interplanetary turbulence Ion cyclotron waves Ions Magnetic variations Magnetohydrodynamics Metis Physics Remote observing Solar corona Solar coronal heating Solar Orbiter (ESA) Solar orbits Solar probes Solar wind Space plasmas Topology Turbulence |
| title | Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves? |
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