J/ApJ/933/127 Multi-spacecraft ICME Database (Davies+, 2022) ================================================================================ Multi-spacecraft observations of the evolution of interplanetary coronal mass ejections between 0.3 and 2.2 au: conjunctions with the Juno spacecraft. Davies E.E., Winslow R.M., Scolini C., Forsyth R.J., Mostl C., Lugaz N., Galvin A.B. =2022ApJ...933..127D ================================================================================ ADC_Keywords: Magnetic fields ; Sun ; Solar system Keywords: Solar coronal mass ejections ; Heliosphere ; Dynamical evolution ; Solar wind ; Catalogues Abstract: We present a catalog of 35 interplanetary coronal mass ejections (ICMEs) observed by the Juno spacecraft and at least one other spacecraft during its cruise phase to Jupiter. We identify events observed by MESSENGER, Venus Express, Wind, and STEREO with magnetic features that can be matched unambiguously with those observed by Juno. A multi-spacecraft study of ICME properties between 0.3 and 2.2 au is conducted: we first investigate the global expansion by tracking the variation in magnetic field strength with increasing heliocentric distance of individual ICME events, finding significant variability in magnetic field relationships for individual events in comparison with statistical trends. With the availability of plasma data at 1 au, the local expansion at 1 au can be compared with global expansion rates between 1 au and Juno. Despite following expected trends, the local and global expansion rates are only weakly correlated. Finally, for those events with clearly identifiable magnetic flux ropes, we investigate the orientation of the flux rope axis as they propagate; we find that 64% of events displayed a decrease in inclination with increasing heliocentric distance, and 40% of events undergo a significant change in orientation as they propagate toward Juno. The multi-spacecraft catalog produced in this study provides a valuable link between ICME observations in the inner heliosphere and beyond 1 au, thereby improving our understanding of ICME evolution. Description: In this study, we use the catalog of interplanetary coronal mass ejections (ICMEs) identified at Juno during its cruise phase in Davies+ (2021, J/ApJ/923/136). The catalog identified ICME signatures observed in measurements of the magnetic field taken by the Juno Magnetic Field Investigation instrument (MAG). During the Juno cruise phase between 2011 August and 2016 July, operational spacecraft within 1au included ACE and Wind at L1, STEREO A/B near 1au, Venus Express at 0.7au and MESSENGER between 0.3 and 0.5au. We use the catalogs of ICMEs observed at MESSENGER, Venus Express, STEREO, Wind to help in identifying events observed by multi-spacecraft. A total of 35 multi-spacecraft events are identified in our database, seven of which can be considered triple-alignment events File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 192 42 *Multi-spacecraft events identified -------------------------------------------------------------------------------- Note on table1.dat: SC1 = refers to the spacecraft that observed the event in conjunction with Juno SC2 = refers to Juno spacecraft ME = magnetic ejecta -------------------------------------------------------------------------------- See also: J/A+A/440/373 : Earthbound interplanetary shocks (Howard+, 2005) J/ApJ/868/124 : ICMEs events from 1998 to 2011 with ACE and WIND (Feng+, 2018) J/MNRAS/493/4570 : Coronal mass ejections on sun-like stars (Leitzinger+, 2020) J/ApJ/891/79 : Single storms and the related ICMEs from 1998-2011 (Li+, 2020) J/ApJ/900/123 : Abundances of heavy ions in ICMEs from 1998-2011 (Gu+, 2020) J/ApJ/923/136 : ICMEs observed by Juno between 1 and 5.4au (Davies+, 2021) J/ApJ/924/L6 : Multipoint coronal mass ejections events (Mostl+, 2022) J/A+A/671/A63 : Multi-population model for Iron ions in ICMEs (Gu+, 2023) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 9 A9 --- ID Unique Juno identifier 11- 14 A4 --- Con-SC Conjunction spacecraft (1) 16- 34 A19 "datime" SC1-ICME1 SC1 ICME boundary start time (2) 36- 54 A19 "datime" SC1-ME-St1 SC1 ME boundary start time (2) 56- 74 A19 "datime" SC1-ME-End1 SC1 ME boundary end time (2) 76- 79 F4.2 AU HAE-r1 [0.3/1.1] SC1 heliocentric distance (3) 81- 85 F5.2 deg HAE-Lat1 [-3.3/3.4] SC1 latitude (3) 87- 92 F6.2 deg HAE-Lon1 [3/355] SC1 longitude (3) 94- 97 F4.1 nT SC1-ME-Bm1 [5/49.1] SC1 mean ME magnetic field strength 99-117 A19 "datime" SC2-ICME2 SC2 ICME boundary start time (2) 119-137 A19 "datime" SC2-ME-St2 ? SC2 ME boundary start time (2) 139-157 A19 "datime" SC2-ME-End2 SC2 ME boundary start time (2) 159-162 F4.2 AU HAE-r2 [1/2.2]? SC2 heliocentric distance (3) 164-168 F5.2 deg HAE-Lat2 [-0.07/4.51]? SC2 latitude (3) 170-175 F6.2 deg HAE-Lon2 [0.79/353]? SC2 longitude (3) 177-180 F4.1 nT SC2-ME-Bm2 [2.7/19]? SC2 mean ME magnetic field strength 182-184 I3 km/s SC1-LE-Vel [321/658]? ICME leading edge velocity 186-188 I3 km/s SC1-TE-Vel [284/598]? ICME trailing edge velocity 190-192 I3 km/s SC1-Cr-Vel [298/610]? ICME cruise velocity -------------------------------------------------------------------------------- Note (1): Spacecraft other than Juno at which the ICME was also observed (SC1). Code as follows: MES = MESSENGER (1 occurrence) STA = STEREO-A (3 occurrences) STB = STEREO-B (4 occurrences) VEX = Venus Express (7 occurrences) Wind = Wind (27 occurrences) Note (2): in ISO standard; YYYY-MM-DD hh:mm:ss. Note (3): listed in Heliocentric Aries Ecliptic (HAE) coordinates. -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Katia van der Woerd [CDS] 03-Jul-2024