SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Stansby D.)
 

Sökning: WFRF:(Stansby D.) > The angular-momentu...

  • Verscharen, DanielUniv Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England.;Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA. (författare)

The angular-momentum flux in the solar wind observed during Solar Orbiter's first orbit

  • Artikel/kapitelEngelska2021

Förlag, utgivningsår, omfång ...

  • 2021-12-14
  • EDP Sciences,2021
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-464275
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-464275URI
  • https://doi.org/10.1051/0004-6361/202140956DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Aims. We present the first measurements of the angular-momentum flux in the solar wind recorded by the Solar Orbiter spacecraft. Our aim is to validate these measurements to support future studies of the Sun's angular-momentum loss. Methods. We combined 60-min averages of the proton bulk moments and the magnetic field measured by the Solar Wind Analyser and the magnetometer onboard Solar Orbiter. We calculated the angular-momentum flux per solid-angle element using data from the first orbit of the mission's cruise phase in 2020. We separated the contributions from protons and from magnetic stresses to the total angular-momentum flux.Results. The angular-momentum flux varies significantly over time. The particle contribution typically dominates over the magnetic-field contribution during our measurement interval. The total angular-momentum flux shows the largest variation and is typically anti-correlated with the radial solar-wind speed. We identify a compression region, potentially associated with a co-rotating interaction region or a coronal mass ejection, which leads to a significant localised increase in the angular-momentum flux, albeit without a significant increase in the angular momentum per unit mass. We repeated our analysis using the density estimate from the Radio and Plasma Waves instrument. Using this independent method, we find a decrease in the peaks of positive angular-momentum flux, but otherwise, our results remain consistent.Conclusions. Our results largely agree with previous measurements of the solar wind's angular-momentum flux in terms of amplitude, variability, and dependence on radial solar-wind bulk speed. Our analysis highlights the potential for more detailed future studies of the solar wind's angular momentum and its other large-scale properties with data from Solar Orbiter. We emphasise the need for studying the radial evolution and latitudinal dependence of the angular-momentum flux in combination with data from Parker Solar Probe and other assets at heliocentric distances of 1 au and beyond.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Stansby, DavidUniv Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (författare)
  • Finley, Adam J.Univ Paris Saclay, Dept Astrophys AIM, F-91191 Gif Sur Yvette, France.;Univ Paris, CNRS, CEA, F-91191 Gif Sur Yvette, France. (författare)
  • Owen, Christopher J.Univ Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (författare)
  • Horbury, TimothyImperial Coll London, Dept Phys, Blackett Lab, London SW7 2AZ, England. (författare)
  • Maksimovic, MilanUniv Paris, Sorbonne Univ, CNRS, Univ PSL,Observ Paris,LESIA, 5 Pl Jules Janssen, F-92195 Meudon, France. (författare)
  • Velli, MarcoUniv Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA. (författare)
  • Bale, Stuart D.Imperial Coll London, Dept Phys, Blackett Lab, London SW7 2AZ, England.;Univ Calif Berkeley, Phys Dept, Berkeley, CA 94720 USA.;Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.;Queen Mary Univ London, Sch Phys & Astron, London E1 4NS, England. (författare)
  • Louarn, PhilippeInst Rech Astrophys & Planetol, F-31028 Toulouse 4, France. (författare)
  • Fedorov, AndreiInst Rech Astrophys & Planetol, F-31028 Toulouse 4, France. (författare)
  • Bruno, RobertoINAF Ist Astrofis & Planetol Spaziali, I-00133 Rome, Italy. (författare)
  • Livi, StefanoSouthwest Res Inst, San Antonio, TX 78238 USA. (författare)
  • Khotyaintsev, Yuri V.Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen(Swepub:uu)ykh28990 (författare)
  • Vecchio, AntonioUniv Paris, Sorbonne Univ, CNRS, Univ PSL,Observ Paris,LESIA, 5 Pl Jules Janssen, F-92195 Meudon, France.;Radboud Univ Nijmegen, Radboud Radio Lab, Dept Astrophys IMAPP, POB 9010, NL-6500 GL Nijmegen, Netherlands. (författare)
  • Lewis, Gethyn R.Univ Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (författare)
  • Anekallu, ChandrasekharUniv Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (författare)
  • Kelly, Christopher W.Univ Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (författare)
  • Watson, GillianUniv Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (författare)
  • Kataria, Dhiren O.Univ Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (författare)
  • O'Brien, HelenImperial Coll London, Dept Phys, Blackett Lab, London SW7 2AZ, England. (författare)
  • Evans, VincentImperial Coll London, Dept Phys, Blackett Lab, London SW7 2AZ, England. (författare)
  • Angelini, VirginiaImperial Coll London, Dept Phys, Blackett Lab, London SW7 2AZ, England. (författare)
  • Univ Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England.;Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA.Univ Coll London, Mullard Space Sci Lab, Holmbury House, Dorking RH5 6NT, Surrey, England. (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Astronomy and Astrophysics: EDP Sciences6560004-63611432-0746

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy