Investigating Short Electric Field Pulses using MAVEN/LPW 2015 Observations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10477985" target="_blank" >RIV/00216208:11320/23:10477985 - isvavai.cz</a>
Result on the web
<a href="https://physics.mff.cuni.cz/wds/proc/pdf23/WDS23_07_f2_Ijaz.pdf" target="_blank" >https://physics.mff.cuni.cz/wds/proc/pdf23/WDS23_07_f2_Ijaz.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Investigating Short Electric Field Pulses using MAVEN/LPW 2015 Observations
Original language description
This study focuses on analyzing short (millisecond) pulses detected by theLangmuir Probe and Waves (LPW) instrument onboard the Mars Atmosphere and VolatileEvolution (MAVEN) spacecraft. We present a statistical analysis of 360,000 mediumfrequency burst electric field waveforms recorded in 2015, the study aims to identifyand analyze the characteristics of these transient signals. We use an automatic routineto detect waveforms with rapid fluctuations in the electric field data, this comprises over12,000 events in the dipole and nearly 5,000 in the monopole configuration. We introducefour key parameters for event identification: the ratio of rising and decay time (t1/t2or t2/t1) and the ratio of positive and negative part of the pulse (A1/A2 or A2/A1).The analysis particularly focuses on the dipole data, which predominantly consist ofbipolar events, typically associated with dust impacts. These events are detected when thespacecraft is charged negatively and have distinct shapes that differ significantly from thoserecorded when the spacecraft is positively charged, indicating the influence of spacecraft'spotential on the shape of the signal in dipole configuration. The peak around 200 kmand the absence of events above 2000 km suggests that these pulses might not stem frominterplanetary dust. We observe strong day-to-day variations in the occurrence of potentialdust events, a pattern not corresponding to the Martian seasonal period or to the changesin MAVEN's orbital periapsis. Our findings contribute to the current understanding ofpotential dust impact signals and raises important questions regarding the influence ofspacecraft's potential on detection mechanisms, interference and Electrostatic SolitaryWaves (ESWs) effects in event identification, and the origin of these pulses.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
WDS'23 Proceedings of Contributed Papers - Physics
ISBN
978-80-7378-503-1
ISSN
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e-ISSN
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Number of pages
14
Pages from-to
50-63
Publisher name
Matfyzpress
Place of publication
Praha
Event location
Praha
Event date
May 30, 2023
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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