Observation of Alfven Waves in an ICME-HSS Interaction Region

被引：5

作者：

Dhamane, Omkar ^{[1
]}

Raghav, Anil ^{[1
]}

Shaikh, Zubair ^{[2
]}

Panchal, Utsav ^{[1
]}

Ghag, Kalpesh ^{[1
]}

Tari, Prathmesh ^{[1
]}

Choraghe, Komal ^{[1
]}

Bhaskar, Ankush ^{[3
]}

Telloni, Daniele ^{[4
]}

Mishra, Wageesh ^{[5
]}

机构：

[1] Univ Mumbai, Dept Phys, Santacruz E, Mumbai 400098, India

[2] Indian Inst Geomagnetism IIG, New Panvel, Mumbai 410218, India

[3] Indian Space Res Org ISRO, Vikram Sarabhai Space Ctr VSSC, Thiruvananthapuram 695022, Kerala, India

[4] Natl Inst Astrophys, Astrophys Observ Torino, Via Osservatorio 20, I-10025 Pino Torinese, Italy

[5] Indian Inst Astrophys, Block 2, Bengaluru 560034, India

来源：

SOLAR PHYSICS | 2023年 / 298卷 / 03期

关键词：

Coronal mass ejection (CME); High speed stream (HSS); Alfven wave; SLOW SOLAR-WIND; COROTATING INTERACTION REGIONS; PLANAR MAGNETIC-STRUCTURE; CROSS-HELICITY; CLOUD EROSION; PLASMA; TURBULENCE; FLUCTUATIONS; EVOLUTION; FIELD;

D O I：

10.1007/s11207-023-02127-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Alfven wave (AW) is the most common fluctuation present within the solar wind emitted from the Sun. Whether or not AWs can originate after the collision of an Interplanetary Coronal Mass Ejection (ICME) and a High-Speed Stream (HSS) remains an open question. To find an answer to this question, we have investigated an ICME-HSS interaction event observed on 21(st) October 1999 at 1 AU by the WIND spacecraft. We have used the Walen test to identify AWs and estimated the Elsasser variables to find its characteristics. We explicitly find dominant sunward AWs within the ICME, whereas the trailing HSS has strong anti-sunward AWs. We suggest that the ICME-HSS interaction deforms the Magnetic Cloud (MC) of the ICME, resulting in the generation of AWs inside the MC. Additionally, the existence of reconnection within the ICME's early stage could also contribute to the origin of AWs within it.

引用

页数：17

共 133 条

[1] Slow Solar Wind: Observations and Modeling [J].

Abbo, L. ;

Ofman, L. ;

Antiochos, S. K. ;

Hansteen, V. H. ;

Harra, L. ;

Ko, Y. -K. ;

Lapenta, G. ;

Li, B. ;

Riley, P. ;

Strachan, L. ;

von Steiger, R. ;

Wang, Y. -M. .

SPACE SCIENCE REVIEWS, 2016, 201 (1-4) :55-108

[2] GRANULATION, MAGNETO-HYDRODYNAMIC WAVES, AND THE HEATING OF THE SOLAR CORONA [J].

ALFVEN, H .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1947, 107 (02) :211-219

[3] Existence of electromagnetic-hydrodynamic waves [J].

Alfven, H .

NATURE, 1942, 150 :405-406

[4]

[Anonymous], 2008, Severe Space Weather Events: Understanding Societal and Economic Impacts: A Workshop Report, DOI DOI 10.17226/12507

[5] A model for solar coronal mass ejections [J].

Antiochos, SK ;

DeVore, CR ;

Klimchuk, JA .

ASTROPHYSICAL JOURNAL, 1999, 510 (01) :485-493

[6] Geoeffectiveness of magnetic cloud, shock/sheath, interaction region, high-speed stream and their combined occurrence [J].

Badruddin ;

Singh, Y. P. .

PLANETARY AND SPACE SCIENCE, 2009, 57 (03) :318-331

[7] THE HELIOSPHERIC MAGNETIC-FIELD OVER THE SOUTH POLAR-REGION OF THE SUN [J].

BALOGH, A ;

SMITH, EJ ;

TSURUTANI, BT ;

SOUTHWOOD, DJ ;

FORSYTH, RJ ;

HORBURY, TS .

SCIENCE, 1995, 268 (5213) :1007-1010

[8] LOCAL INSTABILITIES OF ALFVEN WAVES IN HIGH-SPEED STREAMS [J].

BAVASSANO, B ;

DOBROWOLNY, M ;

MORENO, G .

SOLAR PHYSICS, 1978, 57 (02) :445-465

[9] Alfvenic turbulence in the polar wind: A statistical study on cross helicity and residual energy variations [J].

Bavassano, B ;

Pietropaolo, E ;

Bruno, R .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2000, 105 (A6) :12697-12704

[10] LARGE-SCALE SOLAR-WIND FLUCTUATIONS IN THE INNER HELIOSPHERE AT LOW SOLAR-ACTIVITY [J].

BAVASSANO, B ;

BRUNO, R .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1989, 94 (A1) :168-176

← 1 2 3 4 5 6 7 8 9 10 →