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Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection

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Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection. / Dorrian, Gareth; Breen, Andy; Brown, Daniel; Davies, Jackie; Fallows, Richard; Rouillard, Alexis.

In: Geophysical Research Letters, Vol. 35, No. 24, L24104, 31.12.2008.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Dorrian, G, Breen, A, Brown, D, Davies, J, Fallows, R & Rouillard, A 2008, 'Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection', Geophysical Research Letters, vol. 35, no. 24, L24104. https://doi.org/10.1029/2008GL036181

APA

Dorrian, G., Breen, A., Brown, D., Davies, J., Fallows, R., & Rouillard, A. (2008). Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection. Geophysical Research Letters, 35(24), [L24104]. https://doi.org/10.1029/2008GL036181

Vancouver

Dorrian G, Breen A, Brown D, Davies J, Fallows R, Rouillard A. Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection. Geophysical Research Letters. 2008 Dec 31;35(24). L24104. https://doi.org/10.1029/2008GL036181

Author

Dorrian, Gareth ; Breen, Andy ; Brown, Daniel ; Davies, Jackie ; Fallows, Richard ; Rouillard, Alexis. / Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection. In: Geophysical Research Letters. 2008 ; Vol. 35, No. 24.

Bibtex

@article{16306d4785bf481e88a3a690dddc8f10,
title = "Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection",
abstract = "We describe simultaneous Interplanetary Scintillation (IPS) and STEREO Heliospheric Imager (HI) observations of a coronal mass ejection (CME) on 16 May 2007. Strong CME signatures were present throughout the IPS observation. The IPS raypath lay within the field-of-view of HI-1 on STEREO-A and comparison of the observations shows that the IPS measurements came from a region within a faint CME front observed by HI-1A. This front may represent the merging of two converging CMEs. Plane-of- sky velocity estimates based on time-height plots of the two converging CME structures were 325 kmsﰀ1 and 550 kmsﰀ1 for the leading and trailing fronts respectively. The plane- of-sky velocities determined from IPS ranged from 420 ± 10 kmsﰀ1 to 520 ± 20 kmsﰀ1. IPS results reveal the presence of micro-structure within the CME front which may represent interaction between the two separate CME events. This is the first time that it has been possible to interpret IPS observations of small-scale structure within an interplanetary CME in terms of the global structure of the event.",
author = "Gareth Dorrian and Andy Breen and Daniel Brown and Jackie Davies and Richard Fallows and Alexis Rouillard",
note = "Copyright 2008 by the American Geophysical Union.",
year = "2008",
month = dec,
day = "31",
doi = "10.1029/2008GL036181",
language = "English",
volume = "35",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd",
number = "24",

}

RIS

TY - JOUR

T1 - Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection

AU - Dorrian, Gareth

AU - Breen, Andy

AU - Brown, Daniel

AU - Davies, Jackie

AU - Fallows, Richard

AU - Rouillard, Alexis

N1 - Copyright 2008 by the American Geophysical Union.

PY - 2008/12/31

Y1 - 2008/12/31

N2 - We describe simultaneous Interplanetary Scintillation (IPS) and STEREO Heliospheric Imager (HI) observations of a coronal mass ejection (CME) on 16 May 2007. Strong CME signatures were present throughout the IPS observation. The IPS raypath lay within the field-of-view of HI-1 on STEREO-A and comparison of the observations shows that the IPS measurements came from a region within a faint CME front observed by HI-1A. This front may represent the merging of two converging CMEs. Plane-of- sky velocity estimates based on time-height plots of the two converging CME structures were 325 kmsﰀ1 and 550 kmsﰀ1 for the leading and trailing fronts respectively. The plane- of-sky velocities determined from IPS ranged from 420 ± 10 kmsﰀ1 to 520 ± 20 kmsﰀ1. IPS results reveal the presence of micro-structure within the CME front which may represent interaction between the two separate CME events. This is the first time that it has been possible to interpret IPS observations of small-scale structure within an interplanetary CME in terms of the global structure of the event.

AB - We describe simultaneous Interplanetary Scintillation (IPS) and STEREO Heliospheric Imager (HI) observations of a coronal mass ejection (CME) on 16 May 2007. Strong CME signatures were present throughout the IPS observation. The IPS raypath lay within the field-of-view of HI-1 on STEREO-A and comparison of the observations shows that the IPS measurements came from a region within a faint CME front observed by HI-1A. This front may represent the merging of two converging CMEs. Plane-of- sky velocity estimates based on time-height plots of the two converging CME structures were 325 kmsﰀ1 and 550 kmsﰀ1 for the leading and trailing fronts respectively. The plane- of-sky velocities determined from IPS ranged from 420 ± 10 kmsﰀ1 to 520 ± 20 kmsﰀ1. IPS results reveal the presence of micro-structure within the CME front which may represent interaction between the two separate CME events. This is the first time that it has been possible to interpret IPS observations of small-scale structure within an interplanetary CME in terms of the global structure of the event.

U2 - 10.1029/2008GL036181

DO - 10.1029/2008GL036181

M3 - Journal article

VL - 35

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 24

M1 - L24104

ER -