Extremely Low‐Frequency Waves Inside the Diamagnetic Cavity of Comet 67P/Churyumov‐Gerasimenko

Madsen B.; Wedlund C. Simon; Eriksson A.; Goetz C.; Karlsson T.; Gunell H.; Spicher A.; Henri P.; Vallières X.; Miloch W. J.

摘要

Abstract >The European Space Agency/Rosetta mission to comet 67P/Churyumov‐Gerasimenko has provided several hundred observations of the cometary diamagnetic cavity induced by the interaction between outgassed cometary particles, cometary ions, and the solar wind magnetic field. Here we present the first electric field measurements of four preperihelion and postperihelion cavity crossings on 28 May 2015 and 17 February 2016, using the dual‐probe electric field mode of the Langmuir probe (LAP) instrument of the Rosetta Plasma Consortium. We find that on large scales, variations in the electric field fluctuations capture the cavity and boundary regions observed in the already well‐studied magnetic field, suggesting the electric field mode of the LAP instrument as a reliable tool to image cavity crossings. In addition, the LAP electric field mode unravels for the first time extremely low‐frequency waves within two cavities. These low‐frequency electrostatic waves are likely triggered by lower‐hybrid waves observed in the surrounding magnetized plasma. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><抽象类型= “主” XML：LANG = “EN” XML：ID = “grl57361-ABS-0001”> <标题类型= “主”>摘要</ title> >在欧洲航天局/罗塞塔任务彗星67P / Churyumov - 格拉希提供通过脱气彗星颗粒，彗星离子和太阳风磁场之间的相互作用引起的彗星反磁性腔的几百观测。这里，我们提出在2015年5月28日和2016年2月17日的4个preperihelion和postperihelion腔道口的第一电场测量，使用朗缪尔探针（LAP）罗塞塔等离子体Consortium的仪器的双探针电场模式。我们发现，在大尺度上，在电场中的波动变化捕捉腔，并在已充分研究的磁场观察到的边界区域，这表明LAP仪器的电场模式作为一个可靠的工具，以图像腔交叉。此外，LAP电场模式首次揭开两个空腔内极低频波。这些低频静电波可能被周围的磁化等离子体中观察到较低的混合波触发。</ p> </抽象> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23539/'>《Geophysical Research Letters》</a> <b style="margin: 0 2px;">|</b><span>2018年第9期</span><b style="margin: 0 2px;">|</b><span>共11页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Madsen B.&option=202" target="_blank" rel="nofollow">Madsen B.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wedlund C. Simon&option=202" target="_blank" rel="nofollow">Wedlund C. Simon;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Eriksson A.&option=202" target="_blank" rel="nofollow">Eriksson A.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Goetz C.&option=202" target="_blank" rel="nofollow">Goetz C.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Karlsson T.&option=202" target="_blank" rel="nofollow">Karlsson T.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Gunell H.&option=202" target="_blank" rel="nofollow">Gunell H.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Spicher A.&option=202" target="_blank" rel="nofollow">Spicher A.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Henri P.&option=202" target="_blank" rel="nofollow">Henri P.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Vallières X.&option=202" target="_blank" rel="nofollow">Vallières X.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Miloch W. J.&option=202" target="_blank" rel="nofollow">Miloch W. J.;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of PhysicsUniversity of OsloOslo Norway;</p> <p>Department of PhysicsUniversity of OsloOslo Norway;</p> <p>Swedish Institute of Space Physics (IRFU);</p> <p>Institute for Geophysics and Extraterrestrial Physics;</p> <p>Department of Space and Plasma Physics School of Electrical EngineeringKTH Royal Institute of TechnologyStockholm Sweden;</p> <p>Royal Belgian Institute for Space Aeronomy (BIRA‐IASB)Brussels Belgium;</p> <p>Department of PhysicsUniversity of OsloOslo Norway;</p> <p>Laboratoire de Physique et de Chimie de l'Environnement et de l'Espace (LPC2E)Orléans France;</p> <p>Laboratoire de Physique et de Chimie de l'Environnement et de l'Espace (LPC2E)Orléans France;</p> <p>Department of PhysicsUniversity of OsloOslo Norway;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Comet 67P&option=203" rel="nofollow">Comet 67P;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Diamagnetic cavity&option=203" rel="nofollow">Diamagnetic cavity;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Low‐frequency waves&option=203" rel="nofollow">Low‐frequency waves;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ESA/Rosetta&option=203" rel="nofollow">ESA/Rosetta;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Langmuir probe&option=203" rel="nofollow">Langmuir probe;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Plasma measurements&option=203" rel="nofollow">Plasma measurements;</a> </p> <div class="translation"> 机译：彗星67p;抗磁腔;低频波;esa / rosetta;langmuir探针;等离子体测量; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704019851444.html">Extremely Low‐Frequency Waves Inside the Diamagnetic Cavity of Comet 67P/Churyumov‐Gerasimenko</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Madsen B.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Madsen B.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wedlund C. 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