Impact of type II spicules in the corona: simulations and synthetic observables

Juan Martínez-Sykora; Bart De Pontieu; Ineke De Moortel; Viggo Hansteen; Mats Carlsson

doi:10.3847/1538-4357/aac2ca

Impact of type II spicules in the corona: simulations and synthetic observables

Juan Martínez-Sykora, Bart De Pontieu, Ineke De Moortel, Viggo Hansteen, Mats Carlsson

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Abstract

The role of type II spicules in the corona has been a much debated topic in recent years. This paper aims to shed light on the impact of type II spicules in the corona using novel 2.5D radiative MHD simulations including ion-neutral interaction effects with the Bifrost code. We find that the formation of simulated type II spicules, driven by the release of magnetic tension, impacts the corona in various manners. Associated with the formation of spicules, the corona exhibits 1) magneto-acoustic shocks and flows which supply mass to coronal loops, and 2) transversal magnetic waves and electric currents that propagate at Alfvén speeds. The transversal waves and electric currents, generated by the spicule's driver and lasting for many minutes, are dissipated and heat the associated loop. These complex interactions in the corona can be connected with blue shifted secondary components in coronal spectral lines (Red-Blue asymmetries) observed with Hinode/EIS and SOHO/SUMER, as well as the EUV counterpart of type II spicules and propagating coronal disturbances (PCDs) observed with the 171 Å and 193 Å SDO/AIA channels.

Original language	English
Article number	116
Journal	Astrophysical Journal
Volume	860
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/aac2ca
Publication status	Published - 19 Jun 2018

Keywords

Magnetohydrodynamics (MHD)
Methods: numerical
Radiative transfer
Sun: atmosphere
Sun: corona

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10.3847/1538-4357/aac2ca

Martinez-Sykora_2018_AJ_TypeIIspicules_AAM
© 2018, American Astronomical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.3847/1538-4357/aac2ca
Accepted author manuscript, 5.68 MB

Cite this

@article{f3344015657940d4b5bb8809df65ec66,

title = "Impact of type II spicules in the corona: simulations and synthetic observables ",

abstract = "The role of type II spicules in the corona has been a much debated topic in recent years. This paper aims to shed light on the impact of type II spicules in the corona using novel 2.5D radiative MHD simulations including ion-neutral interaction effects with the Bifrost code. We find that the formation of simulated type II spicules, driven by the release of magnetic tension, impacts the corona in various manners. Associated with the formation of spicules, the corona exhibits 1) magneto-acoustic shocks and flows which supply mass to coronal loops, and 2) transversal magnetic waves and electric currents that propagate at Alfv{\'e}n speeds. The transversal waves and electric currents, generated by the spicule's driver and lasting for many minutes, are dissipated and heat the associated loop. These complex interactions in the corona can be connected with blue shifted secondary components in coronal spectral lines (Red-Blue asymmetries) observed with Hinode/EIS and SOHO/SUMER, as well as the EUV counterpart of type II spicules and propagating coronal disturbances (PCDs) observed with the 171 {\AA} and 193 {\AA} SDO/AIA channels. ",

keywords = "Magnetohydrodynamics (MHD), Methods: numerical, Radiative transfer, Sun: atmosphere, Sun: corona",

author = "Juan Mart{\'i}nez-Sykora and {De Pontieu}, Bart and {De Moortel}, Ineke and Viggo Hansteen and Mats Carlsson",

note = "We gratefully acknowledge support by NASA grants, NNX16AG90G, NNH15ZDA001N, NNX17AD33G, and NNG09FA40C (IRIS), NSF grant AST1714955. This research has received funding from the UK Science and Technology Facilities Council (Consolidated Grant ST/K000950/1) and the European Union Horizon 2020 research and innovation programme (grant agreement No. 647214). This research was supported by the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013) / ERC Grant agreement nr. 291058. We thankfully acknowledge the support of the Research Council of Norway through grant 230938/F50, through its Center of Excellence scheme, project number 262622, and through grants of computing time from the Programme for Supercomputing.",

year = "2018",

month = jun,

day = "19",

doi = "10.3847/1538-4357/aac2ca",

language = "English",

volume = "860",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

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TY - JOUR

T1 - Impact of type II spicules in the corona

T2 - simulations and synthetic observables

AU - Martínez-Sykora, Juan

AU - De Pontieu, Bart

AU - De Moortel, Ineke

AU - Hansteen, Viggo

AU - Carlsson, Mats

N1 - We gratefully acknowledge support by NASA grants, NNX16AG90G, NNH15ZDA001N, NNX17AD33G, and NNG09FA40C (IRIS), NSF grant AST1714955. This research has received funding from the UK Science and Technology Facilities Council (Consolidated Grant ST/K000950/1) and the European Union Horizon 2020 research and innovation programme (grant agreement No. 647214). This research was supported by the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013) / ERC Grant agreement nr. 291058. We thankfully acknowledge the support of the Research Council of Norway through grant 230938/F50, through its Center of Excellence scheme, project number 262622, and through grants of computing time from the Programme for Supercomputing.

PY - 2018/6/19

Y1 - 2018/6/19

N2 - The role of type II spicules in the corona has been a much debated topic in recent years. This paper aims to shed light on the impact of type II spicules in the corona using novel 2.5D radiative MHD simulations including ion-neutral interaction effects with the Bifrost code. We find that the formation of simulated type II spicules, driven by the release of magnetic tension, impacts the corona in various manners. Associated with the formation of spicules, the corona exhibits 1) magneto-acoustic shocks and flows which supply mass to coronal loops, and 2) transversal magnetic waves and electric currents that propagate at Alfvén speeds. The transversal waves and electric currents, generated by the spicule's driver and lasting for many minutes, are dissipated and heat the associated loop. These complex interactions in the corona can be connected with blue shifted secondary components in coronal spectral lines (Red-Blue asymmetries) observed with Hinode/EIS and SOHO/SUMER, as well as the EUV counterpart of type II spicules and propagating coronal disturbances (PCDs) observed with the 171 Å and 193 Å SDO/AIA channels.

AB - The role of type II spicules in the corona has been a much debated topic in recent years. This paper aims to shed light on the impact of type II spicules in the corona using novel 2.5D radiative MHD simulations including ion-neutral interaction effects with the Bifrost code. We find that the formation of simulated type II spicules, driven by the release of magnetic tension, impacts the corona in various manners. Associated with the formation of spicules, the corona exhibits 1) magneto-acoustic shocks and flows which supply mass to coronal loops, and 2) transversal magnetic waves and electric currents that propagate at Alfvén speeds. The transversal waves and electric currents, generated by the spicule's driver and lasting for many minutes, are dissipated and heat the associated loop. These complex interactions in the corona can be connected with blue shifted secondary components in coronal spectral lines (Red-Blue asymmetries) observed with Hinode/EIS and SOHO/SUMER, as well as the EUV counterpart of type II spicules and propagating coronal disturbances (PCDs) observed with the 171 Å and 193 Å SDO/AIA channels.

KW - Magnetohydrodynamics (MHD)

KW - Methods: numerical

KW - Radiative transfer

KW - Sun: atmosphere

KW - Sun: corona

UR - https://arxiv.org/abs/1805.06475

U2 - 10.3847/1538-4357/aac2ca

DO - 10.3847/1538-4357/aac2ca

M3 - Article

SN - 0004-637X

VL - 860

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 116

ER -

Impact of type II spicules in the corona: simulations and synthetic observables

Abstract

Keywords

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Solar and Magnetospheric - Consolidated: Solar and Magnetospheric Magnetohydrodynamics and Plasmas: Theory and Application

H2020 ERC Consolidator - CORONALDOLLS: CORONALDOLLS

Plasma Theory: Solar and Magnetospheric Plasma Theory

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Impact of type II spicules in the corona: simulations and synthetic observables

Abstract

Keywords

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Projects

Solar and Magnetospheric - Consolidated: Solar and Magnetospheric Magnetohydrodynamics and Plasmas: Theory and Application

H2020 ERC Consolidator - CORONALDOLLS: CORONALDOLLS

Plasma Theory: Solar and Magnetospheric Plasma Theory

Cite this