1 / 23

太陽雑誌会 2003/4/28 殿岡 英顕

太陽雑誌会 2003/4/28 殿岡 英顕. Prominence Eruption and Coronal Mass Ejection: A Statistical Study Using Microwave Observations Gopalswamy, N.; Shimojo,M.; Lu, W.; Yashiro, S.; Shibasaki, K.; Howard, R. A. ApJ, 586, 562-578, 2003. 概要.

rian
Download Presentation

太陽雑誌会 2003/4/28 殿岡 英顕

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 太陽雑誌会 2003/4/28 殿岡 英顕 Prominence Eruption and Coronal Mass Ejection: A Statistical Study Using Microwave ObservationsGopalswamy, N.; Shimojo,M.; Lu, W.; Yashiro, S.; Shibasaki, K.; Howard, R. A.ApJ, 586, 562-578, 2003

  2. 概要 • 下条氏のNoRH Prominence catalog と、八代氏の LASCO CME catalog を合わせて、統計的に解析したもの。

  3. 2.Data Selection • Automatic detection of limb events at NoRH 17GHz, from 1996 January 1 to 2001 December 31. • SOHO LASCO C2 and C3, corresponding to the prominence events. • 186 events total (excluding SOHO major datagap)

  4. 3.1 Prominence trajectoriesFig1: Typical prominence trajectories

  5. Fig2. Time-height plot • T for Transverse, 34/186 • R for Radial, 152/186

  6. 3.2 Prominence heightsFig3. Max height

  7. 3.3 Prominence velocitiesFig4. Average speed

  8. Fig5. Speed vs. Height

  9. 4. Relation between CMEs and PEsTable1: measured properties

  10. Fig6. CME-Prominence relationship with association • An eruptive prominence of 2000 Oct 22.

  11. Fig7. CME-Prominence relationship without association • An prominence erupton event of 2001 Aug 29 • No discernible change on LASCO observations.

  12. Table2: Statistical properties

  13. Fig8. Height histograms • 134/186 PEs were associated with CMEs,34 no associated CMEs,11 streamer change. • CME+PE events:faster and larger heights

  14. 4.1 Source latitudeFig9. Latitude distribution • PE distributions: • 2 peaks • events from almost all latitudes • 3 from eqator • CME distributions: • One broad peak centered on the equator • almost all latitudes

  15. Fig10: Solar cycle variation • CME and PE latitude vs Carrington rotation number • CME and PE occur at all latitudes during solar maxima and close to equator during solar minimum.

  16. 4.2 Timing relationshipFig11: The difference between two onset time • Onset times of PEs and CMEs are roughly the same within +/- 0.5hr.

  17. 4.3 Spatial relationshipFig12: Spatial relationship • The latitude offsets of PEs and CMEs. • More events with positive offsets • The latitude of CMEs is closer to the equator than that of corresponding prominence. • Positive offset before 2000.

  18. 4.4 Core associationFig13:An example of the prominence-CME association • 2001 Dec 19-20 • Radio+EIT195+LASCO

  19. Fig14: Speed distribution of CME, core and PE • 98/134 (73%) had clear whitelight cores.

  20. Fig15: Core speed vs PE speed • Core speed is always greater than PE speed • fast PEs associated with fast cores (?)

  21. 4.5 Streamer eventsFig16: An example of streamer event • 1998 June 1 PE • 1.24 Rsun (initial) to 1.28 Rsun (final) • streamer expanded • 11/52 = 21% were associated

  22. 5. Discussions • Munro et al. (1979):The prominences with large height have better association with CMEs. • Gilbert et al. (2000): CME associations are different (They are larger). • Hori & Culhane (2002): association with CMEs92% vs 76%. The difference of selection criteira. • Yang & Wang (2002): association rate 10 to 30%,65% for Gopalswamy's check.

  23. 6. Summary and conclusions • Radial (eruptive) and Transverse (active) events • Radial events showed close relationship to the CMEs (83%). • 73% of all the PEs were associated with CMEs. • Onsets of PEs and CMEs were nearly simultaneous, within 30min. • CPAs of CMEs and PEs generally did not coincide. CMEs – equator, PEs- AR belt for minimum, no such relationship for solar maximum.

More Related