The solar energetic particle event of 16 August 2001: ~ 400 MeV protons following an eruption at ~ W180

E. W. Cliver; B. J. Thompson; G. R. Lawrence; A. N. Zhukov; A. J. Tylka; W. F. Dietrich; D. V. Reames; M. J. Reiner; R. J. MacDowall; A. G. Kosovichev; A. G. Ling

The solar energetic particle event of 16 August 2001: ~ 400 MeV protons following an eruption at ~ W180

E. W. Cliver, B. J. Thompson, G. R. Lawrence, A. N. Zhukov, A. J. Tylka, W. F. Dietrich, D. V. Reames, M. J. Reiner, R. J. MacDowall, A. G. Kosovichev, A. G. Ling

Research output: Contribution to conference › Paper › peer-review

25 Scopus citations

Abstract

A fast ( ~ 1500 km s^-1 ) full-halo coronal mass ejection (CME) was observed late on 15 August 2001 by the white-light coronagraph on SOHO, and was followed within an hour by an intense 400 MeV proton event at 1 AU. The absence of significant front side activity at the inferred launch time of the CME indicates a source region on the far side of the Sun. The most promising active region to produce a major CME on 15-16 August was AR 9557, located near the far side disk center. Supporting evidence for this extreme back side CME origin is provided by helioseismology analysis of Michelson Doppler Imager (MDI) data and from analysis of the trajectories of low-frequency (< 1 MHz) radio bursts observed by experiments on Ulysses andWind. Extreme ultra-violet Imaging Telescope (EIT) images reveal the onset of activity at the west limb of the Sun, suggesting the arrival of a wave front near the time that the first solar energetic particles (SEPs) to arrive at Earth were injected into space. We interpret these observations in terms of widespread acceleration of SEPs at a coronal shock wave that is manifested by a Wind/WAVES decametric/hectometric (DH) type II radio burst.

Original language	English (US)
Pages	121-124
Number of pages	4
State	Published - 2005
Externally published	Yes
Event	29th International Cosmic Ray Conference, ICRC 2005 - Pune, India Duration: Aug 3 2005 → Aug 10 2005

Other

Other	29th International Cosmic Ray Conference, ICRC 2005
Country/Territory	India
City	Pune
Period	8/3/05 → 8/10/05

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Cite this

Cliver, E. W., Thompson, B. J., Lawrence, G. R., Zhukov, A. N., Tylka, A. J., Dietrich, W. F., Reames, D. V., Reiner, M. J., MacDowall, R. J., Kosovichev, A. G., & Ling, A. G. (2005). The solar energetic particle event of 16 August 2001: ~ 400 MeV protons following an eruption at ~ W180. 121-124. Paper presented at 29th International Cosmic Ray Conference, ICRC 2005, Pune, India.

@conference{ba340b3002fb46cf959813c191eb5c73,

title = "The solar energetic particle event of 16 August 2001: ~ 400 MeV protons following an eruption at ~ W180",

abstract = "A fast ( ~ 1500 km s-1 ) full-halo coronal mass ejection (CME) was observed late on 15 August 2001 by the white-light coronagraph on SOHO, and was followed within an hour by an intense 400 MeV proton event at 1 AU. The absence of significant front side activity at the inferred launch time of the CME indicates a source region on the far side of the Sun. The most promising active region to produce a major CME on 15-16 August was AR 9557, located near the far side disk center. Supporting evidence for this extreme back side CME origin is provided by helioseismology analysis of Michelson Doppler Imager (MDI) data and from analysis of the trajectories of low-frequency (< 1 MHz) radio bursts observed by experiments on Ulysses andWind. Extreme ultra-violet Imaging Telescope (EIT) images reveal the onset of activity at the west limb of the Sun, suggesting the arrival of a wave front near the time that the first solar energetic particles (SEPs) to arrive at Earth were injected into space. We interpret these observations in terms of widespread acceleration of SEPs at a coronal shock wave that is manifested by a Wind/WAVES decametric/hectometric (DH) type II radio burst.",

author = "Cliver, {E. W.} and Thompson, {B. J.} and Lawrence, {G. R.} and Zhukov, {A. N.} and Tylka, {A. J.} and Dietrich, {W. F.} and Reames, {D. V.} and Reiner, {M. J.} and MacDowall, {R. J.} and Kosovichev, {A. G.} and Ling, {A. G.}",

year = "2005",

language = "English (US)",

pages = "121--124",

note = "29th International Cosmic Ray Conference, ICRC 2005 ; Conference date: 03-08-2005 Through 10-08-2005",

}

TY - CONF

T1 - The solar energetic particle event of 16 August 2001

T2 - 29th International Cosmic Ray Conference, ICRC 2005

AU - Cliver, E. W.

AU - Thompson, B. J.

AU - Lawrence, G. R.

AU - Zhukov, A. N.

AU - Tylka, A. J.

AU - Dietrich, W. F.

AU - Reames, D. V.

AU - Reiner, M. J.

AU - MacDowall, R. J.

AU - Kosovichev, A. G.

AU - Ling, A. G.

PY - 2005

Y1 - 2005

N2 - A fast ( ~ 1500 km s-1 ) full-halo coronal mass ejection (CME) was observed late on 15 August 2001 by the white-light coronagraph on SOHO, and was followed within an hour by an intense 400 MeV proton event at 1 AU. The absence of significant front side activity at the inferred launch time of the CME indicates a source region on the far side of the Sun. The most promising active region to produce a major CME on 15-16 August was AR 9557, located near the far side disk center. Supporting evidence for this extreme back side CME origin is provided by helioseismology analysis of Michelson Doppler Imager (MDI) data and from analysis of the trajectories of low-frequency (< 1 MHz) radio bursts observed by experiments on Ulysses andWind. Extreme ultra-violet Imaging Telescope (EIT) images reveal the onset of activity at the west limb of the Sun, suggesting the arrival of a wave front near the time that the first solar energetic particles (SEPs) to arrive at Earth were injected into space. We interpret these observations in terms of widespread acceleration of SEPs at a coronal shock wave that is manifested by a Wind/WAVES decametric/hectometric (DH) type II radio burst.

AB - A fast ( ~ 1500 km s-1 ) full-halo coronal mass ejection (CME) was observed late on 15 August 2001 by the white-light coronagraph on SOHO, and was followed within an hour by an intense 400 MeV proton event at 1 AU. The absence of significant front side activity at the inferred launch time of the CME indicates a source region on the far side of the Sun. The most promising active region to produce a major CME on 15-16 August was AR 9557, located near the far side disk center. Supporting evidence for this extreme back side CME origin is provided by helioseismology analysis of Michelson Doppler Imager (MDI) data and from analysis of the trajectories of low-frequency (< 1 MHz) radio bursts observed by experiments on Ulysses andWind. Extreme ultra-violet Imaging Telescope (EIT) images reveal the onset of activity at the west limb of the Sun, suggesting the arrival of a wave front near the time that the first solar energetic particles (SEPs) to arrive at Earth were injected into space. We interpret these observations in terms of widespread acceleration of SEPs at a coronal shock wave that is manifested by a Wind/WAVES decametric/hectometric (DH) type II radio burst.

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M3 - Paper

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Y2 - 3 August 2005 through 10 August 2005

ER -

The solar energetic particle event of 16 August 2001: ~ 400 MeV protons following an eruption at ~ W180

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