2022 |
Erratum: The Role of Alfv\ en Wave Dynamics on the Large-scale Properties of the Solar Wind: Comparing an MHD Simulation with Parker Solar Probe E1 data (2020, ApJS, 246, 24)
eville, Victor; Velli, Marco; Panasenco, Olga; Tenerani, Anna; Shi, Chen; Badman, Samuel; Bale, Stuart; Kasper, J.~C.; Stevens, Michael; Korreck, Kelly; Bonnell, J.~W.; Case, Anthony; de Wit, Thierry; Goetz, Keith; Harvey, Peter; Larson, Davin; Livi, Roberto; Malaspina, David; MacDowall, Robert; Pulupa, Marc; Whittlesey, Phyllis;
Published by: \apjs Published on: mar
YEAR: 2022   DOI: 10.3847/1538-4365/ac532e
Parker Data Used
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2021 |
On the Role of Solar Wind Expansion as a Source of Whistler Waves: Scattering of Suprathermal Electrons and Heat Flux Regulation in the Inner Heliosphere
The role of solar wind expansion in generating whistler waves is investigated using the EB-iPic3D code, which models solar wind expansion self-consistently within a fully kinetic semi-implicit approach. The simulation is initialized with an electron velocity distribution function modeled after observations of the Parker Solar Probe during its first perihelion at 0.166 au, consisting of a dense core and an antisunward strahl. This distribution function is initially stable with respect to kinetic instabilities. Expansion drive ...
Micera, A.; Zhukov, A.~N.; opez, R.~A.; Boella, E.; Tenerani, A.; Velli, M.; Lapenta, G.; Innocenti, M.~E.;
Published by: \apj Published on: sep
YEAR: 2021   DOI: 10.3847/1538-4357/ac1067
Solar wind; Plasma astrophysics; Space plasmas; 1534; 1261; 1544; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics; Parker Data Used
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Evolution of Switchbacks in the Inner Heliosphere
We analyze magnetic field data from the first six encounters of Parker Solar Probe, three Helios fast streams and two Ulysses south polar passes covering heliocentric distances 0.1 \ensuremath\lesssim R \ensuremath\lesssim 3 au. We use this data set to statistically determine the evolution of switchbacks of different periods and amplitudes with distance from the Sun. We compare the radial evolution of magnetic field variances with that of the mean square amplitudes of switchbacks, and quantify the radial evolution of the cum ...
Tenerani, Anna; Sioulas, Nikos; Matteini, Lorenzo; Panasenco, Olga; Shi, Chen; Velli, Marco;
Published by: \apjl Published on: oct
YEAR: 2021   DOI: 10.3847/2041-8213/ac2606
Parker Data Used; Heliosphere; Solar wind; interplanetary turbulence; Alfven waves; Space plasmas; 711; 1534; 830; 23; 1544; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics
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First Solar Orbiter observation of the Alfv\ enic slow wind and identification of its solar source
Context. Turbulence dominated by large-amplitude, nonlinear Alfv\ en-like fluctuations mainly propagating away from the Sun is ubiquitous in high-speed solar wind streams. Recent studies have demontrated that slow wind streams may also show strong Alfv\ enic signatures, especially in the inner heliosphere. \ Aims: The present study focuses on the characterisation of an Alfv\ enic slow solar wind interval observed by Solar Orbiter between 14 and 18 July 2020 at a heliocentric distance of 0.64 AU. \ Methods: Our analysis is ba ...
Amicis, R.; Bruno, R.; Panasenco, O.; Telloni, D.; Perrone, D.; Marcucci, M.~F.; Woodham, L.; Velli, M.; De Marco, R.; Jagarlamudi, V.; Coco, I.; Owen, C.; Louarn, P.; Livi, S.; Horbury, T.; e, Andr\; Angelini, V.; Evans, V.; Fedorov, A.; Genot, V.; Lavraud, B.; Matteini, L.; Müller, D.; Brien, H.; Pezzi, O.; Rouillard, A.~P.; Sorriso-Valvo, L.; Tenerani, A.; Verscharen, D.; Zouganelis, I.;
Published by: \aap Published on: dec
YEAR: 2021   DOI: 10.1051/0004-6361/202140938
Parker Data Used; Interplanetary medium; Solar wind; methods: data analysis; magnetohydrodynamics (MHD); turbulence; Sun: general
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Alfvenic versus non-Alfvenic turbulence in the inner heliosphere as observed by Parker Solar Probe
Context. Parker Solar Probe (PSP) measures the magnetic field and plasma parameters of the solar wind at unprecedentedly close distances to the Sun. These data provide great opportunities to study the early-stage evolution of magnetohydrodynamic (MHD) turbulence in the solar wind. Aims: In this study, we make use of the PSP data to explore the nature of solar wind turbulence focusing on the Alfvénic character and power spectra of the fluctuations and their dependence on the distance and context (i.e., large-scale sol ...
Shi, C.; Velli, M.; Panasenco, O.; Tenerani, A.; eville, V.; Bale, S.; Kasper, J.; Korreck, K.; Bonnell, J.; de Wit, Dudok; Goetz, K.; Harvey, P.; MacDowall, R.; Pulupa, M.; Case, A.; Larson, D.; Verniero, J.; Livi, R.; Stevens, M.; al., et;
Published by: Astronomy and Astrophysics Published on: 06/2021
YEAR: 2021   DOI: "10.1051/0004-6361/202039818"
Parker Data Used; parker solar probe; Solar Probe Plus
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Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe-Solar Orbiter Radial Alignment
The first radial alignment between Parker Solar Probe and Solar Orbiter spacecraft is used to investigate the evolution of solar wind turbulence in the inner heliosphere. Assuming ballistic propagation, two 1.5 hr intervals are tentatively identified as providing measurements of the same plasma parcels traveling from 0.1 to 1 au. Using magnetic field measurements from both spacecraft, the properties of turbulence in the two intervals are assessed. Magnetic spectral density, flatness, and high-order moment scaling laws are ca ...
Telloni, Daniele; Sorriso-Valvo, Luca; Woodham, Lloyd; Panasenco, Olga; Velli, Marco; Carbone, Francesco; Zank, Gary; Bruno, Roberto; Perrone, Denise; Nakanotani, Masaru; Shi, Chen; Amicis, Raffaella; De Marco, Rossana; Jagarlamudi, Vamsee; Steinvall, Konrad; Marino, Raffaele; Adhikari, Laxman; Zhao, Lingling; Liang, Haoming; Tenerani, Anna; Laker, Ronan; Horbury, Timothy; Bale, Stuart; Pulupa, Marc; Malaspina, David; MacDowall, Robert; Goetz, Keith; de Wit, Thierry; Harvey, Peter; Kasper, Justin; Korreck, Kelly; Larson, Davin; Case, Anthony; Stevens, Michael; Whittlesey, Phyllis; Livi, Roberto; Owen, Christopher; Livi, Stefano; Louarn, Philippe; Antonucci, Ester; Romoli, Marco; Brien, Helen; Evans, Vincent; Angelini, Virginia;
Published by: The Astrophysical Journal Published on: 05/2021
YEAR: 2021   DOI: 10.3847/2041-8213/abf7d1
Parker Data Used; Magnetohydrodynamics; Alfven waves; Space plasmas; interplanetary turbulence; Solar wind; 1964; 23; 1544; 830; 1534
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2020 |
Tearing Modes in Partially Ionized Astrophysical Plasma
Pucci, Fulvia; Singh, Alkendra; Tenerani, Anna; Velli, Marco;
Published by: \apjl Published on: 11/2020
YEAR: 2020   DOI: 10.3847/2041-8213/abc0e7
Parker Data Used; Solar magnetic reconnection; Plasma astrophysics; Space plasmas; Collision processes; 1504; 1261; 1544; 2065; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics
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Oblique Tearing Mode Instability: Guide Field and Hall Effect
Shi, Chen; Velli, Marco; Pucci, Fulvia; Tenerani, Anna; Innocenti, Maria;
Published by: \apj Published on: 10/2020
YEAR: 2020   DOI: 10.3847/1538-4357/abb6fa
Parker Data Used; Solar magnetic reconnection; Plasma physics; Magnetohydrodynamics; 1504; 2089; 1964; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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Tearing Instability and Periodic Density Perturbations in the Slow Solar Wind
In contrast with the fast solar wind, which originates in coronal holes, the source of the slow solar wind is still debated. Often intermittent and enriched with low first ionization potential elements\textemdashakin to what is observed in closed coronal loops\textemdashthe slow wind could form in bursty events nearby helmet streamers. Slow winds also exhibit density perturbations that have been shown to be periodic and could be associated with flux ropes ejected from the tip of helmet streamers, as shown recently by the ...
Réville, Victor; Velli, Marco; Rouillard, Alexis; Lavraud, Benoit; Tenerani, Anna; Shi, Chen; Strugarek, Antoine;
Published by: The Astrophysical Journal Published on: 05/2020
YEAR: 2020   DOI: 10.3847/2041-8213/ab911d
Astrophysics - Solar and Stellar Astrophysics; Magnetohydrodynamics; parker solar probe; Physics - Plasma Physics; Physics - Space Physics; Plasma astrophysics; Slow solar wind; Solar magnetic reconnection; Solar Probe Plus; Solar wind
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Magnetic Field Kinks and Folds in the Solar Wind
Parker Solar Probe (PSP) observations during its first encounter at 35.7 R☉ have shown the presence of magnetic field lines that are strongly perturbed to the point that they produce local inversions of the radial magnetic field, known as switchbacks. Their counterparts in the solar wind velocity field are local enhancements in the radial speed, or jets, displaying (in all components) the velocity-magnetic field correlation typical of large amplitude Alfv\ en waves propagating away from the Sun. Switchbacks a ...
Tenerani, Anna; Velli, Marco; Matteini, Lorenzo; eville, Victor; Shi, Chen; Bale, Stuart; Kasper, Justin; Bonnell, John; Case, Anthony; de Wit, Thierry; Goetz, Keith; Harvey, Peter; Klein, Kristopher; Korreck, Kelly; Larson, Davin; Livi, Roberto; MacDowall, Robert; Malaspina, David; Pulupa, Marc; Stevens, Michael; Whittlesey, Phyllis;
Published by: The Astrophysical Journal Supplement Series Published on: 02/2020
YEAR: 2020   DOI: 10.3847/1538-4365/ab53e1
Astrophysics - Solar and Stellar Astrophysics; Parker Data Used; parker solar probe; Physics - Space Physics; Solar Probe Plus
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The Role of Alfv\ en Wave Dynamics on the Large-scale Properties of the Solar Wind: Comparing an MHD Simulation with Parker Solar Probe E1 Data
During Parker Solar Probe\textquoterights first orbit, the solar wind plasma was observed in situ closer than ever before, the perihelion on 2018 November 6 revealing a flow that is constantly permeated by large-amplitude Alfv\ enic fluctuations. These include radial magnetic field reversals, or switchbacks, that seem to be a persistent feature of the young solar wind. The measurements also reveal a very strong, unexpected, azimuthal velocity component. In this work, we numerically model the solar corona during this first ...
Réville, Victor; Velli, Marco; Panasenco, Olga; Tenerani, Anna; Shi, Chen; Badman, Samuel; Bale, Stuart; Kasper, J.; Stevens, Michael; Korreck, Kelly; Bonnell, J.; Case, Anthony; de Wit, Thierry; Goetz, Keith; Harvey, Peter; Larson, Davin; Livi, Roberto; Malaspina, David; MacDowall, Robert; Pulupa, Marc; Whittlesey, Phyllis;
Published by: The Astrophysical Journal Supplement Series Published on: 02/2020
YEAR: 2020   DOI: 10.3847/1538-4365/ab4fef
Astrophysics - Solar and Stellar Astrophysics; Parker Data Used; parker solar probe; Physics - Space Physics; Solar Probe Plus
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Spectral signatures of recursive magnetic field reconnection
Tenerani, A.; Velli, M.;
Published by: \mnras Published on: 01/2020
YEAR: 2020   DOI: 10.1093/mnras/stz3310
Parker Data Used; magnetic reconnection; MHD; plasmas; turbulence; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics
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2019 |
Dynamic Evolution of Current Sheets, Ideal Tearing, Plasmoid Formation and Generalized Fractal Reconnection Scaling Relations
Singh, K.~A.~P.; Pucci, Fulvia; Tenerani, Anna; Shibata, Kazunari; Hillier, Andrew; Velli, Marco;
Published by: \apj Published on: 08/2019
YEAR: 2019   DOI: 10.3847/1538-4357/ab2b99
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; plasmas; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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2018 |
Nonlinear Firehose Relaxation and Constant-B Field Fluctuations
Tenerani, Anna; Velli, Marco;
Published by: \apjl Published on: 11/2018
YEAR: 2018   DOI: 10.3847/2041-8213/aaec01
Parker Data Used; instabilities; plasmas; Solar wind; waves; Physics - Plasma Physics
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Parametric Decay and the Origin of the Low-frequency Alfv\ enic Spectrum of the Solar Wind
The fast solar wind shows a wide spectrum of transverse magnetic and velocity field perturbations. These perturbations are strongly correlated in the sense of Alfv\ en waves propagating mostly outward, from the Sun to the interplanetary medium. They are likely to be fundamental to the acceleration and the heating of the solar wind. However, the precise origin of the broadband spectrum is unknown to date. Typical periods of chromospheric Alfv\ en waves are limited to a few minutes, and any longer period perturbations shoul ...
Réville, Victor; Tenerani, Anna; Velli, Marco;
Published by: The Astrophysical Journal Published on: 10/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aadb8f
instabilities; magnetohydrodynamics: MHD; methods: numerical; parker solar probe; Solar Probe Plus; Solar wind; waves
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Marginal Stability of Sweet-Parker Type Current Sheets at Low Lundquist Numbers
Shi, Chen; Velli, Marco; Tenerani, Anna;
Published by: \apj Published on: 06/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aabd83
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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Onset of fast ideal tearing in thin current sheets: Dependence on the equilibrium current profile
Pucci, F.; Velli, M.; Tenerani, A.; Del Sarto, D.;
Published by: Physics of Plasmas Published on: 03/2018
YEAR: 2018   DOI: 10.1063/1.5022988
Parker Data Used; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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2017 |
The Parametric Instability of Alfv\ en Waves: Effects of Temperature Anisotropy
Tenerani, Anna; Velli, Marco; Hellinger, Petr;
Published by: \apj Published on: 12/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa9bef
Parker Data Used; instabilities; plasmas; Sun: heliosphere; waves; Physics - Space Physics
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Fast Magnetic Reconnection: \textquotedblleftIdeal\textquotedblright Tearing and the Hall Effect
Pucci, Fulvia; Velli, Marco; Tenerani, Anna;
Published by: \apj Published on: 08/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa7b82
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; plasmas; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics
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Evolving Waves and Turbulence in the Outer Corona and Inner Heliosphere: The Accelerating Expanding Box
Tenerani, Anna; Velli, Marco;
Published by: \apj Published on: 07/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa71b9
Parker Data Used; magnetohydrodynamics: MHD; methods: numerical; Solar wind; Sun: heliosphere; turbulence; waves; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics
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2016 |
Inward Motions in the Outer Solar Corona between 7 and 12 R $_☉$: Evidence for Waves or Magnetic Reconnection Jets?
Tenerani, Anna; Velli, Marco; DeForest, Craig;
Published by: \apjl Published on: 07/2016
YEAR: 2016   DOI: 10.3847/2041-8205/825/1/L3
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Solar wind; Sun: corona; waves
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2015 |
Magnetic Reconnection: Recursive Current Sheet Collapse Triggered by \textquotedblleftIdeal\textquotedblright Tearing
Tenerani, Anna; Velli, Marco; Rappazzo, Antonio; Pucci, Fulvia;
Published by: \apjl Published on: 11/2015
YEAR: 2015   DOI: 10.1088/2041-8205/813/2/L32
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Sun: corona; Physics - Plasma Physics
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