Relativistic particle injection and interplanetary transport during the January 20, 2005 ground level enhancement

Alejandro Sáiz; David Ruffolo; Manit Rujiwarodom; John W. Bieber; John Clem; Paul Evenson; Roger Pyle; Marc L. Duldig; John E. Humble

Relativistic particle injection and interplanetary transport during the January 20, 2005 ground level enhancement

Alejandro Sáiz
, David Ruffolo
, Manit Rujiwarodom
, John W. Bieber
, John Clem
, Paul Evenson
, Roger Pyle
, Marc L. Duldig
, John E. Humble

Mahidol University
Chulalongkorn University
University of Delaware
Australian Antarctic Division
University of Tasmania

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

29 Citations (Scopus)

Abstract

Besides producing the largest ground level enhancement (GLE) in half a century, the relativistic solar particles detected during the event of January 20, 2005 showed some interesting temporal and directional features, including extreme anisotropy. In this paper we analyze the time evolution of cosmic ray density and anisotropy as characterized by data from the "Spaceship Earth" network of neutron monitors by using numerical solutions of the Fokker-Planck equation for particle transport. We find that a sudden change in the transport conditions during the event is needed to explain the data, and we propose that this change was caused by the solar particles themselves.

Original language	English
Pages	229-232
Number of pages	4
Publication status	Published - 2005
Externally published	Yes
Event	29th International Cosmic Ray Conference, ICRC 2005 - Pune, India Duration: 3 Aug 2005 → 10 Aug 2005

Conference

Conference	29th International Cosmic Ray Conference, ICRC 2005
Country/Territory	India
City	Pune
Period	3/08/05 → 10/08/05

Cite this

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title = "Relativistic particle injection and interplanetary transport during the January 20, 2005 ground level enhancement",

abstract = "Besides producing the largest ground level enhancement (GLE) in half a century, the relativistic solar particles detected during the event of January 20, 2005 showed some interesting temporal and directional features, including extreme anisotropy. In this paper we analyze the time evolution of cosmic ray density and anisotropy as characterized by data from the {"}Spaceship Earth{"} network of neutron monitors by using numerical solutions of the Fokker-Planck equation for particle transport. We find that a sudden change in the transport conditions during the event is needed to explain the data, and we propose that this change was caused by the solar particles themselves.",

author = "Alejandro S{\'a}iz and David Ruffolo and Manit Rujiwarodom and Bieber, \{John W.\} and John Clem and Paul Evenson and Roger Pyle and Duldig, \{Marc L.\} and Humble, \{John E.\}",

year = "2005",

language = "English",

pages = "229--232",

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

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TY - CONF

T1 - Relativistic particle injection and interplanetary transport during the January 20, 2005 ground level enhancement

AU - Sáiz, Alejandro

AU - Ruffolo, David

AU - Rujiwarodom, Manit

AU - Bieber, John W.

AU - Clem, John

AU - Evenson, Paul

AU - Pyle, Roger

AU - Duldig, Marc L.

AU - Humble, John E.

PY - 2005

Y1 - 2005

N2 - Besides producing the largest ground level enhancement (GLE) in half a century, the relativistic solar particles detected during the event of January 20, 2005 showed some interesting temporal and directional features, including extreme anisotropy. In this paper we analyze the time evolution of cosmic ray density and anisotropy as characterized by data from the "Spaceship Earth" network of neutron monitors by using numerical solutions of the Fokker-Planck equation for particle transport. We find that a sudden change in the transport conditions during the event is needed to explain the data, and we propose that this change was caused by the solar particles themselves.

AB - Besides producing the largest ground level enhancement (GLE) in half a century, the relativistic solar particles detected during the event of January 20, 2005 showed some interesting temporal and directional features, including extreme anisotropy. In this paper we analyze the time evolution of cosmic ray density and anisotropy as characterized by data from the "Spaceship Earth" network of neutron monitors by using numerical solutions of the Fokker-Planck equation for particle transport. We find that a sudden change in the transport conditions during the event is needed to explain the data, and we propose that this change was caused by the solar particles themselves.

UR - https://www.scopus.com/pages/publications/84898992415

M3 - Paper

AN - SCOPUS:84898992415

SP - 229

EP - 232

T2 - 29th International Cosmic Ray Conference, ICRC 2005

Y2 - 3 August 2005 through 10 August 2005

ER -

Relativistic particle injection and interplanetary transport during the January 20, 2005 ground level enhancement

Abstract

Conference

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