Space Science Reviews最新文献

{"title":"Future Exploration of the Outer Heliosphere and Very Local Interstellar Medium by Interstellar Probe.","authors":"P C Brandt, E Provornikova, S D Bale, A Cocoros, R DeMajistre, K Dialynas, H A Elliott, S Eriksson, B Fields, A Galli, M E Hill, M Horanyi, T Horbury, S Hunziker, P Kollmann, J Kinnison, G Fountain, S M Krimigis, W S Kurth, J Linsky, C M Lisse, K E Mandt, W Magnes, R L McNutt, J Miller, E Moebius, P Mostafavi, M Opher, L Paxton, F Plaschke, A R Poppe, E C Roelof, K Runyon, S Redfield, N Schwadron, V Sterken, P Swaczyna, J Szalay, D Turner, H Vannier, R Wimmer-Schweingruber, P Wurz, E J Zirnstein","doi":"10.1007/s11214-022-00943-x","DOIUrl":"10.1007/s11214-022-00943-x","url":null,"abstract":"<p><p>A detailed overview of the knowledge gaps in our understanding of the heliospheric interaction with the largely unexplored Very Local Interstellar Medium (VLISM) are provided along with predictions of with the scientific discoveries that await. The new measurements required to make progress in this expanding frontier of space physics are discussed and include in-situ plasma and pick-up ion measurements throughout the heliosheath, direct sampling of the VLISM properties such as elemental and isotopic composition, densities, flows, and temperatures of neutral gas, dust and plasma, and remote energetic neutral atom (ENA) and Lyman-alpha (LYA) imaging from vantage points that can uniquely discern the heliospheric shape and bring new information on the interaction with interstellar hydrogen. The implementation of a pragmatic Interstellar Probe mission with a nominal design life to reach 375 Astronomical Units (au) with likely operation out to 550 au are reported as a result of a 4-year NASA funded mission study.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 2","pages":"18"},"PeriodicalIF":9.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9974711/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9143709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Electric and Magnetic Fields Instrument Suite and Integrated Science (EMFISIS): Science, Data, and Usage Best Practices.","authors":"C A Kletzing,&nbsp;J Bortnik,&nbsp;G Hospodarsky,&nbsp;W S Kurth,&nbsp;O Santolik,&nbsp;C W Smitth,&nbsp;I W Christopher,&nbsp;D P Hartley,&nbsp;I Kolmasova,&nbsp;A Sen Gupta","doi":"10.1007/s11214-023-00973-z","DOIUrl":"https://doi.org/10.1007/s11214-023-00973-z","url":null,"abstract":"<p><p>We provide a post-mission assessment of the science and data from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) investigation on the NASA Van Allen Probes mission. An overview of important scientific results is presented, covering all of the key wave modes and DC magnetic fields measured by EMFISIS. Discussion of the data products, which are publicly available, follows to provide users with guidance on characteristics and known issues of the measurements. We present guidance on the correct use of derived products, in particular, the wave-normal analysis (WNA) which yields fundamental wave properties such as polarization, ellipticity, and Poynting flux. We also give information about the plasma density derived from measuring the upper hybrid line in the inner magnetosphere.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 4","pages":"28"},"PeriodicalIF":10.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10129970/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9392446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Comparison of Presolar Isotopic Signatures in Laboratory-Studied Primitive Solar System Materials and Comet 67P/Churyumov-Gerasimenko: New Insights from Light Elements, Halogens, and Noble Gases.","authors":"Peter Hoppe, Martin Rubin, Kathrin Altwegg","doi":"10.1007/s11214-023-00977-9","DOIUrl":"10.1007/s11214-023-00977-9","url":null,"abstract":"<p><p>Comets are considered the most primitive planetary bodies in our Solar System. ESA's Rosetta mission to Jupiter family comet 67P/Churyumov-Gerasimenko (67P/CG) has provided a wealth of isotope data which expanded the existing data sets on isotopic compositions of comets considerably. In a previous paper (Hoppe et al. in Space Sci. Rev. 214:106, 2018) we reviewed the results for comet 67P/CG from the first four years of data reduction after arrival of Rosetta at the comet in August 2014 and discussed them in the context of respective meteorite data. Since then important new isotope data of several elements, among them the biogenic elements H, C, N, and O, for comet 67P/CG, the Tagish Lake meteorite, and C-type asteroid Ryugu became available which provide new insights into the formation conditions of small planetary bodies in the Solar System's earliest history. To complement the picture on comet 67P/CG and its context to other primitive Solar System materials, especially meteorites, that emerged from our previous paper, we review here the isotopic compositions of H, C, and N in various volatile molecules, of O in water and a suite of other molecules, of the halogens Cl and Br, and of the noble gas Kr in comet 67P/CG. Furthermore, we also review the H isotope data obtained in the refractory organics of the dust grains collected in the coma of 67P/CG. These data are compared with the respective meteoritic and Ryugu data and spectroscopic observations of other comets and extra-solar environments; Cl, Br, and Kr data are also evaluated in the context of a potential late supernova contribution, as suggested by the Si- and S-isotopic data of 67P/CG.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 4","pages":"32"},"PeriodicalIF":9.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10209250/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9707340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Ionospheric Connection Explorer - Prime Mission Review.","authors":"Thomas J Immel,&nbsp;Scott L England,&nbsp;Brian J Harding,&nbsp;Yen-Jung Wu,&nbsp;Astrid Maute,&nbsp;Chihoko Cullens,&nbsp;Christoph R Englert,&nbsp;Stephen B Mende,&nbsp;Roderick A Heelis,&nbsp;Harald U Frey,&nbsp;Eric J Korpela,&nbsp;Andrew W Stephan,&nbsp;Sabine Frey,&nbsp;Michael H Stevens,&nbsp;Jonathan J Makela,&nbsp;Farzad Kamalabadi,&nbsp;Colin C Triplett,&nbsp;Jeffrey M Forbes,&nbsp;Emma McGinness,&nbsp;L Claire Gasque,&nbsp;John M Harlander,&nbsp;Jean-C Gérard,&nbsp;Benoit Hubert,&nbsp;Joseph D Huba,&nbsp;Robert R Meier,&nbsp;Bryce Roberts","doi":"10.1007/s11214-023-00975-x","DOIUrl":"10.1007/s11214-023-00975-x","url":null,"abstract":"<p><p>The two-year prime mission of the NASA Ionospheric Connection Explorer (ICON) is complete. The baseline operational and scientific objectives have been met and exceeded, as detailed in this report. In October of 2019, ICON was launched into an orbit that provides its instruments the capability to deliver near-continuous measurements of the densest plasma in Earth's space environment. Through collection of a key set of in-situ and remote sensing measurements that are, by virtue of a detailed mission design, uniquely synergistic, ICON enables completely new investigations of the mechanisms that control the behavior of the ionosphere-thermosphere system under both geomagnetically quiet and active conditions. In a two-year period that included a deep solar minimum, ICON has elucidated a number of remarkable effects in the ionosphere attributable to energetic inputs from the lower and middle atmosphere, and shown how these are transmitted from the edge of space to the peak of plasma density above. The observatory operated in a period of low activity for 2 years and then for a year with increasing solar activity, observing the changing balance of the impacts of lower and upper atmospheric drivers on the ionosphere.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 5","pages":"41"},"PeriodicalIF":10.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10352447/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9844510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energetic Electron Precipitation Driven by Electromagnetic Ion Cyclotron Waves from ELFIN's Low Altitude Perspective.","authors":"V Angelopoulos,&nbsp;X-J Zhang,&nbsp;A V Artemyev,&nbsp;D Mourenas,&nbsp;E Tsai,&nbsp;C Wilkins,&nbsp;A Runov,&nbsp;J Liu,&nbsp;D L Turner,&nbsp;W Li,&nbsp;K Khurana,&nbsp;R E Wirz,&nbsp;V A Sergeev,&nbsp;X Meng,&nbsp;J Wu,&nbsp;M D Hartinger,&nbsp;T Raita,&nbsp;Y Shen,&nbsp;X An,&nbsp;X Shi,&nbsp;M F Bashir,&nbsp;X Shen,&nbsp;L Gan,&nbsp;M Qin,&nbsp;L Capannolo,&nbsp;Q Ma,&nbsp;C L Russell,&nbsp;E V Masongsong,&nbsp;R Caron,&nbsp;I He,&nbsp;L Iglesias,&nbsp;S Jha,&nbsp;J King,&nbsp;S Kumar,&nbsp;K Le,&nbsp;J Mao,&nbsp;A McDermott,&nbsp;K Nguyen,&nbsp;A Norris,&nbsp;A Palla,&nbsp;A Roosnovo,&nbsp;J Tam,&nbsp;E Xie,&nbsp;R C Yap,&nbsp;S Ye,&nbsp;C Young,&nbsp;L A Adair,&nbsp;C Shaffer,&nbsp;M Chung,&nbsp;P Cruce,&nbsp;M Lawson,&nbsp;D Leneman,&nbsp;M Allen,&nbsp;M Anderson,&nbsp;M Arreola-Zamora,&nbsp;J Artinger,&nbsp;J Asher,&nbsp;D Branchevsky,&nbsp;M Cliffe,&nbsp;K Colton,&nbsp;C Costello,&nbsp;D Depe,&nbsp;B W Domae,&nbsp;S Eldin,&nbsp;L Fitzgibbon,&nbsp;A Flemming,&nbsp;D M Frederick,&nbsp;A Gilbert,&nbsp;B Hesford,&nbsp;R Krieger,&nbsp;K Lian,&nbsp;E McKinney,&nbsp;J P Miller,&nbsp;C Pedersen,&nbsp;Z Qu,&nbsp;R Rozario,&nbsp;M Rubly,&nbsp;R Seaton,&nbsp;A Subramanian,&nbsp;S R Sundin,&nbsp;A Tan,&nbsp;D Thomlinson,&nbsp;W Turner,&nbsp;G Wing,&nbsp;C Wong,&nbsp;A Zarifian","doi":"10.1007/s11214-023-00984-w","DOIUrl":"10.1007/s11214-023-00984-w","url":null,"abstract":"<p><p>We review comprehensive observations of electromagnetic ion cyclotron (EMIC) wave-driven energetic electron precipitation using data collected by the energetic electron detector on the Electron Losses and Fields InvestigatioN (ELFIN) mission, two polar-orbiting low-altitude spinning CubeSats, measuring 50-5000 keV electrons with good pitch-angle and energy resolution. EMIC wave-driven precipitation exhibits a distinct signature in energy-spectrograms of the precipitating-to-trapped flux ratio: peaks at >0.5 MeV which are abrupt (bursty) (lasting ∼17 s, or <math><mi>Δ</mi><mi>L</mi><mo>∼</mo><mn>0.56</mn></math>) with significant substructure (occasionally down to sub-second timescale). We attribute the bursty nature of the precipitation to the spatial extent and structuredness of the wave field at the equator. Multiple ELFIN passes over the same MLT sector allow us to study the spatial and temporal evolution of the EMIC wave - electron interaction region. Case studies employing conjugate ground-based or equatorial observations of the EMIC waves reveal that the energy of moderate and strong precipitation at ELFIN approximately agrees with theoretical expectations for cyclotron resonant interactions in a cold plasma. Using multiple years of ELFIN data uniformly distributed in local time, we assemble a statistical database of ∼50 events of strong EMIC wave-driven precipitation. Most reside at <math><mi>L</mi><mo>∼</mo><mn>5</mn><mo>-</mo><mn>7</mn></math> at dusk, while a smaller subset exists at <math><mi>L</mi><mo>∼</mo><mn>8</mn><mo>-</mo><mn>12</mn></math> at post-midnight. The energies of the peak-precipitation ratio and of the half-peak precipitation ratio (our proxy for the minimum resonance energy) exhibit an <math><mi>L</mi></math>-shell dependence in good agreement with theoretical estimates based on prior statistical observations of EMIC wave power spectra. The precipitation ratio's spectral shape for the most intense events has an exponential falloff away from the peak (i.e., on either side of <math><mo>∼</mo><mn>1.45</mn></math> MeV). It too agrees well with quasi-linear diffusion theory based on prior statistics of wave spectra. It should be noted though that this diffusive treatment likely includes effects from nonlinear resonant interactions (especially at high energies) and nonresonant effects from sharp wave packet edges (at low energies). Sub-MeV electron precipitation observed concurrently with strong EMIC wave-driven >1 MeV precipitation has a spectral shape that is consistent with efficient pitch-angle scattering down to ∼ 200-300 keV by much less intense higher frequency EMIC waves at dusk (where such waves are most frequent). At ∼100 keV, whistler-mode chorus may be implicated in concurrent precipitation. These results confirm the critical role of EMIC waves in driving relativistic electron losses. Nonlinear effects may abound and require further investigation.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 5","pages":"37"},"PeriodicalIF":10.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10335998/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9823275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Particle Acceleration by Magnetic Reconnection in Geospace.","authors":"Mitsuo Oka, Joachim Birn, Jan Egedal, Fan Guo, Robert E Ergun, Drew L Turner, Yuri Khotyaintsev, Kyoung-Joo Hwang, Ian J Cohen, James F Drake","doi":"10.1007/s11214-023-01011-8","DOIUrl":"10.1007/s11214-023-01011-8","url":null,"abstract":"<p><p>Particles are accelerated to very high, non-thermal energies during explosive energy-release phenomena in space, solar, and astrophysical plasma environments. While it has been established that magnetic reconnection plays an important role in the dynamics of Earth's magnetosphere, it remains unclear how magnetic reconnection can further explain particle acceleration to non-thermal energies. Here we review recent progress in our understanding of particle acceleration by magnetic reconnection in Earth's magnetosphere. With improved resolutions, recent spacecraft missions have enabled detailed studies of particle acceleration at various structures such as the diffusion region, separatrix, jets, magnetic islands (flux ropes), and dipolarization front. With the guiding-center approximation of particle motion, many studies have discussed the relative importance of the parallel electric field as well as the Fermi and betatron effects. However, in order to fully understand the particle acceleration mechanism and further compare with particle acceleration in solar and astrophysical plasma environments, there is a need for further investigation of, for example, energy partition and the precise role of turbulence.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 8","pages":"75"},"PeriodicalIF":10.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10630319/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134649758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of Large-Scale Solar Flows.","authors":"Hideyuki Hotta, Yuto Bekki, Laurent Gizon, Quentin Noraz, Mark Rast","doi":"10.1007/s11214-023-01021-6","DOIUrl":"https://doi.org/10.1007/s11214-023-01021-6","url":null,"abstract":"<p><p>The Sun's axisymmetric large-scale flows, differential rotation and meridional circulation, are thought to be maintained by the influence of rotation on the thermal-convective motions in the solar convection zone. These large-scale flows are crucial for maintaining the Sun's global magnetic field. Over the last several decades, our understanding of large-scale motions in the Sun has significantly improved, both through observational and theoretical efforts. Helioseismology has constrained the flow topology in the solar interior, and the growth of supercomputers has enabled simulations that can self-consistently generate large-scale flows in rotating spherical convective shells. In this article, we review our current understanding of solar convection and the large-scale flows present in the Sun, including those associated with the recently discovered inertial modes of oscillation. We discuss some issues still outstanding, and provide an outline of future efforts needed to address these.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 8","pages":"77"},"PeriodicalIF":10.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10656343/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138462721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laboratory Study of Collisionless Magnetic Reconnection.","authors":"H Ji, J Yoo, W Fox, M Yamada, M Argall, J Egedal, Y-H Liu, R Wilder, S Eriksson, W Daughton, K Bergstedt, S Bose, J Burch, R Torbert, J Ng, L-J Chen","doi":"10.1007/s11214-023-01024-3","DOIUrl":"10.1007/s11214-023-01024-3","url":null,"abstract":"<p><p>A concise review is given on the past two decades' results from laboratory experiments on collisionless magnetic reconnection in direct relation with space measurements, especially by the Magnetospheric Multiscale (MMS) mission. Highlights include spatial structures of electromagnetic fields in ion and electron diffusion regions as a function of upstream symmetry and guide field strength, energy conversion and partitioning from magnetic field to ions and electrons including particle acceleration, electrostatic and electromagnetic kinetic plasma waves with various wavelengths, and plasmoid-mediated multiscale reconnection. Combined with the progress in theoretical, numerical, and observational studies, the physics foundation of fast reconnection in collisionless plasmas has been largely established, at least within the parameter ranges and spatial scales that were studied. Immediate and long-term future opportunities based on multiscale experiments and space missions supported by exascale computation are discussed, including dissipation by kinetic plasma waves, particle heating and acceleration, and multiscale physics across fluid and kinetic scales.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 8","pages":"76"},"PeriodicalIF":9.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10651714/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138462722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Flight Performance of the Far Ultraviolet Instrument (FUV) on ICON.","authors":"H U Frey,&nbsp;S B Mende,&nbsp;R R Meier,&nbsp;U Kamaci,&nbsp;J M Urco,&nbsp;F Kamalabadi,&nbsp;S L England,&nbsp;T J Immel","doi":"10.1007/s11214-023-00969-9","DOIUrl":"https://doi.org/10.1007/s11214-023-00969-9","url":null,"abstract":"<p><p>The NASA Ionospheric Connection Explorer (ICON) was launched in October 2019 and has been observing the upper atmosphere and ionosphere to understand the sources of their strong variability, to understand the energy and momentum transfer, and to determine how the solar wind and magnetospheric effects modify the internally-driven atmosphere-space system. The Far Ultraviolet Instrument (FUV) supports these goals by observing the ultraviolet airglow in day and night, determining the atmospheric and ionospheric composition and density distribution. Based on the combination of ground calibration and flight data, this paper describes how major instrument parameters have been verified or refined since launch, how science data are collected, and how the instrument has performed over the first 3 years of the science mission. It also provides a brief summary of science results obtained so far.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 3","pages":"23"},"PeriodicalIF":10.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10049961/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9240811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-Flight Performance of the ICON EUV Spectrograph.","authors":"Eric J Korpela,&nbsp;Martin M Sirk,&nbsp;Jerry Edelstein,&nbsp;Jason B McPhate,&nbsp;Richard M Tuminello,&nbsp;Andrew W Stephan,&nbsp;Scott L England,&nbsp;Thomas J Immel","doi":"10.1007/s11214-023-00963-1","DOIUrl":"https://doi.org/10.1007/s11214-023-00963-1","url":null,"abstract":"<p><p>We present in-flight performance measurements of the Ionospheric Connection Explorer EUV spectrometer, <i>ICON EUV</i>, a wide field ( <math><msup><mn>17</mn> <mo>∘</mo></msup> <mo>×</mo> <msup><mn>12</mn> <mo>∘</mo></msup> </math> ) extreme ultraviolet (EUV) imaging spectrograph designed to observe the lower ionosphere at tangent altitudes between 100 and 500 km. The primary targets of the spectrometer, which has a spectral range of 54-88 nm, are the Oii emission lines at 61.6 nmand 83.4 nm. In flight calibration and performance measurement has shown that the instrument has met all of the science performance requirements. We discuss the observed and expected changes in the instrument performance due to microchannel plate charge depletion, and how these changes were tracked over the first two years of flight. This paper shows raw data products from this instrument. A parallel paper (Stephan et al. in Space Sci. Rev. 218:63, 2022) in this volume discusses the use of these raw products to determine O⁺ density profiles versus altitude.</p>","PeriodicalId":21902,"journal":{"name":"Space Science Reviews","volume":"219 3","pages":"24"},"PeriodicalIF":10.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10050024/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9240815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}