Observation of Alfvén Ion Cyclotron Waves in ICME Magnetic Clouds at 1 au

Omkar Dhamane; Vinit Pawaskar; Anil Raghav; Zubair Shaikh; Raffaella D’Amicis; Kalpesh Ghag; Kishor Kumbhar; Daniele Telloni; Georgios Nicolaou; Prathmesh Tari; Robert Wicks; Utsav Panchal; Bhagyashri Sathe; Prachi Pathare

doi:10.3847/1538-4357/acf19f

Observation of Alfvén Ion Cyclotron Waves in ICME Magnetic Clouds at 1 au

Omkar Dhamane, Vinit Pawaskar, Anil Raghav^*, Zubair Shaikh, Raffaella D’Amicis, Kalpesh Ghag, Kishor Kumbhar, Daniele Telloni, Georgios Nicolaou, Prathmesh Tari, Robert Wicks, Utsav Panchal, Bhagyashri Sathe, Prachi Pathare

^*Corresponding author for this work

Mathematics, Physics and Electrical Engineering

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Abstract

Waves in plasma play an essential role in the energy transfer and plasma-heating processes. This article discusses the in situ observation of Alfvén ion cyclotron (AIC) waves and their characteristics within interplanetary coronal mass ejection (ICME) flux ropes. We analyzed 401 ICME flux ropes, observed by WIND spacecraft from 1995 to 2021 at 1 au. We found only five ICME flux ropes that show an explicit presence of AIC waves; two have normalized magnetic helicity σ m ≤ −0.5, and the remaining three show σ m ≥ 0.5 polarization. The angle between velocity and magnetic field (θ VB) for σ m ≤ −0.5 is 140°. This result supports the existence of quasi-parallel and quasi-antiparallel left-handed polarized AIC waves within ICME flux ropes. We suggest that AIC waves are possibly triggered by (i) proton temperature anisotropy Tp ⊥/Tp ∥ > 1 driven by cyclotron instability and (ii) low-frequency Alfvén waves through the magnetohydrodynamic turbulent cascade. This study shows evidence of fluid and kinetic scales coupling in the ICME flux rope.

Original language	English
Article number	38
Number of pages	8
Journal	The Astrophysical Journal
Volume	957
Issue number	1
Early online date	25 Oct 2023
DOIs	https://doi.org/10.3847/1538-4357/acf19f
Publication status	Published - 1 Nov 2023

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title = "Observation of Alfv{\'e}n Ion Cyclotron Waves in ICME Magnetic Clouds at 1 au",

abstract = "Waves in plasma play an essential role in the energy transfer and plasma-heating processes. This article discusses the in situ observation of Alfv{\'e}n ion cyclotron (AIC) waves and their characteristics within interplanetary coronal mass ejection (ICME) flux ropes. We analyzed 401 ICME flux ropes, observed by WIND spacecraft from 1995 to 2021 at 1 au. We found only five ICME flux ropes that show an explicit presence of AIC waves; two have normalized magnetic helicity σ m ≤ −0.5, and the remaining three show σ m ≥ 0.5 polarization. The angle between velocity and magnetic field (θ VB) for σ m ≤ −0.5 is 140°. This result supports the existence of quasi-parallel and quasi-antiparallel left-handed polarized AIC waves within ICME flux ropes. We suggest that AIC waves are possibly triggered by (i) proton temperature anisotropy Tp ⊥/Tp ∥ > 1 driven by cyclotron instability and (ii) low-frequency Alfv{\'e}n waves through the magnetohydrodynamic turbulent cascade. This study shows evidence of fluid and kinetic scales coupling in the ICME flux rope.",

author = "Omkar Dhamane and Vinit Pawaskar and Anil Raghav and Zubair Shaikh and Raffaella D{\textquoteright}Amicis and Kalpesh Ghag and Kishor Kumbhar and Daniele Telloni and Georgios Nicolaou and Prathmesh Tari and Robert Wicks and Utsav Panchal and Bhagyashri Sathe and Prachi Pathare",

note = "Funding information: We acknowledge the use of the OmniWeb (or CDAWeb or ftp) service and OMNI data provided by the Space Physics Data Facility of NASA/GSFC. We thank SERB, India, whose project reference file number is CRG/2020/002314, supports AR and OD. Thanks to the Department of Physics (Autonomous) University of Mumbai, which provided the resources we needed to complete this work. We also acknowledge Prof. Roberto Bruno for valuable suggestions.",

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doi = "10.3847/1538-4357/acf19f",

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T1 - Observation of Alfvén Ion Cyclotron Waves in ICME Magnetic Clouds at 1 au

AU - Dhamane, Omkar

AU - Pawaskar, Vinit

AU - Raghav, Anil

AU - Shaikh, Zubair

AU - D’Amicis, Raffaella

AU - Ghag, Kalpesh

AU - Kumbhar, Kishor

AU - Telloni, Daniele

AU - Nicolaou, Georgios

AU - Tari, Prathmesh

AU - Wicks, Robert

AU - Panchal, Utsav

AU - Sathe, Bhagyashri

AU - Pathare, Prachi

N1 - Funding information: We acknowledge the use of the OmniWeb (or CDAWeb or ftp) service and OMNI data provided by the Space Physics Data Facility of NASA/GSFC. We thank SERB, India, whose project reference file number is CRG/2020/002314, supports AR and OD. Thanks to the Department of Physics (Autonomous) University of Mumbai, which provided the resources we needed to complete this work. We also acknowledge Prof. Roberto Bruno for valuable suggestions.

PY - 2023/11/1

Y1 - 2023/11/1

N2 - Waves in plasma play an essential role in the energy transfer and plasma-heating processes. This article discusses the in situ observation of Alfvén ion cyclotron (AIC) waves and their characteristics within interplanetary coronal mass ejection (ICME) flux ropes. We analyzed 401 ICME flux ropes, observed by WIND spacecraft from 1995 to 2021 at 1 au. We found only five ICME flux ropes that show an explicit presence of AIC waves; two have normalized magnetic helicity σ m ≤ −0.5, and the remaining three show σ m ≥ 0.5 polarization. The angle between velocity and magnetic field (θ VB) for σ m ≤ −0.5 is 140°. This result supports the existence of quasi-parallel and quasi-antiparallel left-handed polarized AIC waves within ICME flux ropes. We suggest that AIC waves are possibly triggered by (i) proton temperature anisotropy Tp ⊥/Tp ∥ > 1 driven by cyclotron instability and (ii) low-frequency Alfvén waves through the magnetohydrodynamic turbulent cascade. This study shows evidence of fluid and kinetic scales coupling in the ICME flux rope.

AB - Waves in plasma play an essential role in the energy transfer and plasma-heating processes. This article discusses the in situ observation of Alfvén ion cyclotron (AIC) waves and their characteristics within interplanetary coronal mass ejection (ICME) flux ropes. We analyzed 401 ICME flux ropes, observed by WIND spacecraft from 1995 to 2021 at 1 au. We found only five ICME flux ropes that show an explicit presence of AIC waves; two have normalized magnetic helicity σ m ≤ −0.5, and the remaining three show σ m ≥ 0.5 polarization. The angle between velocity and magnetic field (θ VB) for σ m ≤ −0.5 is 140°. This result supports the existence of quasi-parallel and quasi-antiparallel left-handed polarized AIC waves within ICME flux ropes. We suggest that AIC waves are possibly triggered by (i) proton temperature anisotropy Tp ⊥/Tp ∥ > 1 driven by cyclotron instability and (ii) low-frequency Alfvén waves through the magnetohydrodynamic turbulent cascade. This study shows evidence of fluid and kinetic scales coupling in the ICME flux rope.

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U2 - 10.3847/1538-4357/acf19f

DO - 10.3847/1538-4357/acf19f

M3 - Article

SN - 0004-637X

VL - 957

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

M1 - 38

ER -

Observation of Alfvén Ion Cyclotron Waves in ICME Magnetic Clouds at 1 au

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