The University of Southampton
University of Southampton Institutional Repository

Observation of pulsating aurora signatures in cosmic noise absorption data

Observation of pulsating aurora signatures in cosmic noise absorption data
Observation of pulsating aurora signatures in cosmic noise absorption data
This study investigates the contribution of energetic (E > 30 keV) particle precipitation during a pulsating aurora event over Kilpisjärvi (L = 6.2) on 26 February 2014. It is based on the comparison of auroral blue-line emission (427.8 nm) data from an all-sky camera and cosmic noise absorption (CNA) data obtained from a multibeam experiment of the Kilpisjärvi Atmospheric Imaging Receiver Array (KAIRA) riometer. The data sets are compared for three KAIRA beams close to magnetic zenith. Results show a clear correlation between the measured CNA and the auroral blue-line emission during the event, for each beam. In addition, individual pulsations are observed for the first time in the cosmic noise absorption data measured by KAIRA and are found to be close-to-identical to the optical pulsations. This suggests that the modulation of electron precipitation during pulsating aurora takes place in a consistent way over a broad range of energies.
1944-8007
Grandin, M.
286f346c-6496-4f1e-a67a-7f6afe46c8b1
Kero, A.
e6050b4d-d6c3-4ad0-a5db-b20c01264a54
Partamies, N.
17fce18c-77e7-486c-bb53-a6156733fc9f
McKay, D.
b5f038d0-4477-4d5c-9655-1310120e13b2
Whiter, Daniel
9a30d7b6-ea41-44fb-bd52-3ff1964eca5c
Kozlovsky, A.
effeb236-e851-49d9-a951-58d3979b16ad
Miyoshi, Y.
93d5fd61-fd86-4706-896b-0f4b875efa74
Grandin, M.
286f346c-6496-4f1e-a67a-7f6afe46c8b1
Kero, A.
e6050b4d-d6c3-4ad0-a5db-b20c01264a54
Partamies, N.
17fce18c-77e7-486c-bb53-a6156733fc9f
McKay, D.
b5f038d0-4477-4d5c-9655-1310120e13b2
Whiter, Daniel
9a30d7b6-ea41-44fb-bd52-3ff1964eca5c
Kozlovsky, A.
effeb236-e851-49d9-a951-58d3979b16ad
Miyoshi, Y.
93d5fd61-fd86-4706-896b-0f4b875efa74

Grandin, M., Kero, A., Partamies, N., McKay, D., Whiter, Daniel, Kozlovsky, A. and Miyoshi, Y. (2017) Observation of pulsating aurora signatures in cosmic noise absorption data Geophysical Research Letters

Record type: Article

Abstract

This study investigates the contribution of energetic (E > 30 keV) particle precipitation during a pulsating aurora event over Kilpisjärvi (L = 6.2) on 26 February 2014. It is based on the comparison of auroral blue-line emission (427.8 nm) data from an all-sky camera and cosmic noise absorption (CNA) data obtained from a multibeam experiment of the Kilpisjärvi Atmospheric Imaging Receiver Array (KAIRA) riometer. The data sets are compared for three KAIRA beams close to magnetic zenith. Results show a clear correlation between the measured CNA and the auroral blue-line emission during the event, for each beam. In addition, individual pulsations are observed for the first time in the cosmic noise absorption data measured by KAIRA and are found to be close-to-identical to the optical pulsations. This suggests that the modulation of electron precipitation during pulsating aurora takes place in a consistent way over a broad range of energies.

Text ISSI_paper - Accepted Manuscript
Download (1MB)
Text Grandin_et_al-2017-Geophysical_Research_Letters - Version of Record
Restricted to Repository staff only until 13 December 2017.

More information

Accepted/In Press date: 27 May 2017
e-pub ahead of print date: 12 June 2017
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 411002
URI: http://eprints.soton.ac.uk/id/eprint/411002
ISSN: 1944-8007
PURE UUID: a02fac90-4ac0-4bd5-b73e-5257990caf73
ORCID for Daniel Whiter: ORCID iD orcid.org/0000-0001-7130-232X

Catalogue record

Date deposited: 13 Jun 2017 16:31
Last modified: 04 Nov 2017 22:26

Export record

Contributors

Author: M. Grandin
Author: A. Kero
Author: N. Partamies
Author: D. McKay
Author: Daniel Whiter ORCID iD
Author: A. Kozlovsky
Author: Y. Miyoshi

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×