Magnetic Connectivity of the Ecliptic Plane within 0.5 au: Potential Field Source Surface Modeling of the First Parker Solar Probe Encounter

被引：54

作者：

Badman, Samuel T. ^{[1
,2
]}

Bale, Stuart D. ^{[1
,2
,3
]}

Martinez Oliveros, Juan C. ^{[2
]}

Panasenco, Olga ^{[4
]}

Velli, Marco ^{[5
]}

Stansby, David ^{[6
,7
]}

Buitrago-Casas, Juan C. ^{[1
,2
]}

Reville, Victor ^{[5
]}

Bonnell, John W. ^{[2
]}

Case, Anthony W. ^{[8
]}

de Wit, Thierry Dudok ^{[9
,10
]}

Goetz, Keith ^{[11
]}

Harvey, Peter R. ^{[2
]}

Kasper, Justin C. ^{[8
,12
]}

Korreck, Kelly E. ^{[8
]}

Larson, Davin E. ^{[2
]}

Livi, Roberto ^{[2
]}

MacDowall, Robert J. ^{[13
]}

Malaspina, David M. ^{[14
]}

Pulupa, Marc ^{[2
]}

Stevens, Michael L. ^{[8
]}

Whittlesey, Phyllis L. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Phys Dept, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[3] Imperial Coll London, Blackett Lab, London SW7 2AZ, England

[4] Adv Heliophys, Pasadena, CA 91106 USA

[5] Univ Calif Los Angeles, EPSS, Los Angeles, CA 90095 USA

[6] Univ Coll London, Mullard Space Sci Lab, St Mary RH5 6NT, Surrey, England

[7] Imperial Coll London, Dept Phys, London SW7 2AZ, England

[8] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA

[9] CNRS, LPC2E, Orleans, France

[10] Univ Orleans, Orleans, France

[11] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[12] Univ Michigan, Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA

[13] NASA, Goddard Space Flight Ctr, Solar Syst Explorat Div, Greenbelt, MD 20771 USA

[14] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2020年 / 246卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

WIND SPEED; INTERPLANETARY; DYNAMICS;

D O I：

10.3847/1538-4365/ab4da7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compare magnetic field measurements taken by the FIELDS instrument on board Parker Solar Probe (PSP) during its first solar encounter to predictions obtained by potential field source surface (PFSS) modeling. Ballistic propagation is used to connect the spacecraft to the source surface. Despite the simplicity of the model, our results show striking agreement with PSP's first observations of the heliospheric magnetic field from similar to 0.5 au (107.5 R-circle dot) down to 0.16 au (35.7 R-circle dot). Further, we show the robustness of the agreement is improved both by allowing the photospheric input to the model to vary in time, and by advecting the field from PSP down to the PFSS model domain using in situ PSP/Solar Wind Electrons Alphas and Protons measurements of the solar wind speed instead of assuming it to be constant with longitude and latitude. We also explore the source surface height parameter (R-SS) to the PFSS model, finding that an extraordinarily low source surface height (1.3-1.5 R-circle dot) predicts observed small-scale polarity inversions, which are otherwise washed out with regular modeling parameters. Finally, we extract field line traces from these models. By overlaying these on extreme ultraviolet images we observe magnetic connectivity to various equatorial and mid-latitude coronal holes, indicating plausible magnetic footpoints and offering context for future discussions of sources of the solar wind measured by PSP.

引用

页数：17

共 60 条

[1]

Allen R. C., 2020, APJS, DOI [10.3847/1538-4365/ab578f, DOI 10.3847/1538-4365/AB578F]

[2] MAGNETIC FIELDS AND STRUCTURE OF SOLAR CORONA .I. METHODS OF CALCULATING CORONAL FIELDS [J].

ALTSCHULER, MD ;

NEWKIRK, G .

SOLAR PHYSICS, 1969, 9 (01) :131-+

[3] Air Force Data Assimilative Photospheric Flux Transport (ADAPT) Model [J].

Arge, C. Nick ;

Henney, Carl J. ;

Koller, Josef ;

Compeau, C. Rich ;

Young, Shawn ;

MacKenzie, David ;

Fay, Alex ;

Harvey, John W. .

TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE, 2010, 1216 :343-+

[4] Improvement in the prediction of solar wind conditions using near-real time solar magnetic field updates [J].

Arge, CN ;

Pizzo, VJ .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2000, 105 (A5) :10465-10479

[5] Stream structure and coronal sources of the solar wind during the May 12th, 1997 CME [J].

Arge, CN ;

Luhmann, JG ;

Odstrcil, D ;

Schrijver, CJ ;

Li, Y .

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2004, 66 (15-16) :1295-1309

[6]

Arge CN, 2003, AIP CONF PROC, V679, P190, DOI 10.1063/1.1618574

[7] Highly structured slow solar wind emerging from an equatorial coronal hole [J].

Bale, S. D. ;

Badman, S. T. ;

Bonnell, J. W. ;

Bowen, T. A. ;

Burgess, D. ;

Case, A. W. ;

Cattell, C. A. ;

Chandran, B. D. G. ;

Chaston, C. C. ;

Chen, C. H. K. ;

Drake, J. F. ;

De Wit, T. Dudok ;

Eastwood, J. P. ;

Ergun, R. E. ;

Farrell, W. M. ;

Fong, C. ;

Goetz, K. ;

Goldstein, M. ;

Goodrich, K. A. ;

Harvey, P. R. ;

Horbury, T. S. ;

Howes, G. G. ;

Kasper, J. C. ;

Kellogg, P. J. ;

Klimchuk, J. A. ;

Korreck, K. E. ;

Krasnoselskikh, V. V. ;

Krucker, S. ;

Laker, R. ;

Larson, D. E. ;

MacDowall, R. J. ;

Maksimovic, M. ;

Malaspina, D. M. ;

Martinez-Oliveros, J. ;

McComas, D. J. ;

Meyer-Vernet, N. ;

Moncuquet, M. ;

Mozer, F. S. ;

Phan, T. D. ;

Pulupa, M. ;

Raouafi, N. E. ;

Salem, C. ;

Stansby, D. ;

Stevens, M. ;

Szabo, A. ;

Velli, M. ;

Woolley, T. ;

Wygant, J. R. .

NATURE, 2019, 576 (7786) :237-+

[8] The FIELDS Instrument Suite for Solar Probe Plus [J].

Bale, S. D. ;

Goetz, K. ;

Harvey, P. R. ;

Turin, P. ;

Bonnell, J. W. ;

Dudok de Wit, T. ;

Ergun, R. E. ;

MacDowall, R. J. ;

Pulupa, M. ;

Andre, M. ;

Bolton, M. ;

Bougeret, J. -L. ;

Bowen, T. A. ;

Burgess, D. ;

Cattell, C. A. ;

Chandran, B. D. G. ;

Chaston, C. C. ;

Chen, C. H. K. ;

Choi, M. K. ;

Connerney, J. E. ;

Cranmer, S. ;

Diaz-Aguado, M. ;

Donakowski, W. ;

Drake, J. F. ;

Farrell, W. M. ;

Fergeau, P. ;

Fermin, J. ;

Fischer, J. ;

Fox, N. ;

Glaser, D. ;

Goldstein, M. ;

Gordon, D. ;

Hanson, E. ;

Harris, S. E. ;

Hayes, L. M. ;

Hinze, J. J. ;

Hollweg, J. V. ;

Horbury, T. S. ;

Howard, R. A. ;

Hoxie, V. ;

Jannet, G. ;

Karlsson, M. ;

Kasper, J. C. ;

Kellogg, P. J. ;

Kien, M. ;

Klimchuk, J. A. ;

Krasnoselskikh, V. V. ;

Krucker, S. ;

Lynch, J. J. ;

Maksimovic, M. .

SPACE SCIENCE REVIEWS, 2016, 204 (1-4) :49-82

[9]

Clark R., 2003, BAAS, V35, P822

[10]

Cohen C. M. S., 2020, APJS, DOI [10.3847/1538-4365/ab4c38, DOI 10.3847/1538-4365/AB4C38]

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