Irregular Proton Injection to High Energies at Interplanetary Shocks

Domenico Trotta; Timothy S. Horbury; David Lario; Rami Vainio; Nina Dresing; Andrew Dimmock; Joe Giacalone; Heli Hietala; Robert F. Wimmer-Schweingruber; Lars Berger; Liu Yang

doi:10.3847/2041-8213/ad03f6

Irregular Proton Injection to High Energies at Interplanetary Shocks

Domenico Trotta, Timothy S. Horbury, David Lario, Rami Vainio, Nina Dresing, Andrew Dimmock, Joe Giacalone, Heli Hietala, Robert F. Wimmer-Schweingruber, Lars Berger, Liu Yang

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

How thermal particles are accelerated to suprathermal energies is an unsolved issue, crucial for many astrophysical systems. We report novel observations of irregular, dispersive enhancements of the suprathermal particle population upstream of a high-Mach-number interplanetary shock. We interpret the observed behavior as irregular “injections” of suprathermal particles resulting from shock front irregularities. Our findings, directly compared to self-consistent simulation results, provide important insights for the study of remote astrophysical systems where shock structuring is often neglected.

Original language	English (US)
Article number	L13
Journal	Astrophysical Journal Letters
Volume	957
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/ad03f6
State	Published - Nov 1 2023

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/2041-8213/ad03f6

Cite this

@article{aa4ffbdc9b0345b9bc1227fc0eabc59d,

title = "Irregular Proton Injection to High Energies at Interplanetary Shocks",

abstract = "How thermal particles are accelerated to suprathermal energies is an unsolved issue, crucial for many astrophysical systems. We report novel observations of irregular, dispersive enhancements of the suprathermal particle population upstream of a high-Mach-number interplanetary shock. We interpret the observed behavior as irregular “injections” of suprathermal particles resulting from shock front irregularities. Our findings, directly compared to self-consistent simulation results, provide important insights for the study of remote astrophysical systems where shock structuring is often neglected.",

author = "Domenico Trotta and Horbury, {Timothy S.} and David Lario and Rami Vainio and Nina Dresing and Andrew Dimmock and Joe Giacalone and Heli Hietala and Wimmer-Schweingruber, {Robert F.} and Lars Berger and Liu Yang",

note = "Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",

year = "2023",

month = nov,

day = "1",

doi = "10.3847/2041-8213/ad03f6",

language = "English (US)",

volume = "957",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "American Astronomical Society",

number = "2",

}

TY - JOUR

T1 - Irregular Proton Injection to High Energies at Interplanetary Shocks

AU - Trotta, Domenico

AU - Horbury, Timothy S.

AU - Lario, David

AU - Vainio, Rami

AU - Dresing, Nina

AU - Dimmock, Andrew

AU - Giacalone, Joe

AU - Hietala, Heli

AU - Wimmer-Schweingruber, Robert F.

AU - Berger, Lars

AU - Yang, Liu

PY - 2023/11/1

Y1 - 2023/11/1

N2 - How thermal particles are accelerated to suprathermal energies is an unsolved issue, crucial for many astrophysical systems. We report novel observations of irregular, dispersive enhancements of the suprathermal particle population upstream of a high-Mach-number interplanetary shock. We interpret the observed behavior as irregular “injections” of suprathermal particles resulting from shock front irregularities. Our findings, directly compared to self-consistent simulation results, provide important insights for the study of remote astrophysical systems where shock structuring is often neglected.

AB - How thermal particles are accelerated to suprathermal energies is an unsolved issue, crucial for many astrophysical systems. We report novel observations of irregular, dispersive enhancements of the suprathermal particle population upstream of a high-Mach-number interplanetary shock. We interpret the observed behavior as irregular “injections” of suprathermal particles resulting from shock front irregularities. Our findings, directly compared to self-consistent simulation results, provide important insights for the study of remote astrophysical systems where shock structuring is often neglected.

UR - http://www.scopus.com/inward/record.url?scp=85176761595&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85176761595&partnerID=8YFLogxK

U2 - 10.3847/2041-8213/ad03f6

DO - 10.3847/2041-8213/ad03f6

M3 - Article

AN - SCOPUS:85176761595

SN - 2041-8205

VL - 957

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

M1 - L13

ER -

Irregular Proton Injection to High Energies at Interplanetary Shocks

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this