Galactic cosmic-ray flux short-term variations and associated interplanetary structures with LISA Pathfinder

C. Grimani; S. Benella; M. Fabi; N. Finetti; M. Laurenza; D. Telloni; M. Villani

doi:10.1393/ncc/i2019-19042-9

Galactic cosmic-ray flux short-term variations and associated interplanetary structures with LISA Pathfinder

C. Grimani, S. Benella, M. Fabi, N. Finetti, M. Laurenza, D. Telloni, M. Villani

Research output: Contribution to journal › Article › peer-review

Abstract

The European Space Agency LISA Pathfinder (LPF) mission orbited around the Sun-Earth first Lagrangian point L1 between January 2016 and July 2017. A particle detector aboard LPF allowed for galactic cosmic-ray (GCR) integral flux measurements above 70 MeV n⁻ ¹ between 2016 February 18 and 2017 July 3 during the descending phase of the present solar cycle N. 24, which is characterized by a positive polarity period. The statistical uncertainty on hourly-averaged GCR countings was of 1%. The characteristics of recurrent and non-recurrent GCR flux short-term variations observed with LPF are reported here. In particular, it is focused on GCR flux variation profiles and their association with the passage of large-scale interplanetary structures. Forbush decrease observations and geomagnetic storm occurrence during LPF are also briefly discussed.

Original language	English
Article number	Y
Journal	Nuovo Cimento della Societa Italiana di Fisica C
Volume	42
Issue number	1
DOIs	https://doi.org/10.1393/ncc/i2019-19042-9
Publication status	Published - 1 Jan 2019
Externally published	Yes

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title = "Galactic cosmic-ray flux short-term variations and associated interplanetary structures with LISA Pathfinder",

abstract = "The European Space Agency LISA Pathfinder (LPF) mission orbited around the Sun-Earth first Lagrangian point L1 between January 2016 and July 2017. A particle detector aboard LPF allowed for galactic cosmic-ray (GCR) integral flux measurements above 70 MeV n− 1 between 2016 February 18 and 2017 July 3 during the descending phase of the present solar cycle N. 24, which is characterized by a positive polarity period. The statistical uncertainty on hourly-averaged GCR countings was of 1\%. The characteristics of recurrent and non-recurrent GCR flux short-term variations observed with LPF are reported here. In particular, it is focused on GCR flux variation profiles and their association with the passage of large-scale interplanetary structures. Forbush decrease observations and geomagnetic storm occurrence during LPF are also briefly discussed.",

author = "C. Grimani and S. Benella and M. Fabi and N. Finetti and M. Laurenza and D. Telloni and M. Villani",

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T1 - Galactic cosmic-ray flux short-term variations and associated interplanetary structures with LISA Pathfinder

AU - Grimani, C.

AU - Benella, S.

AU - Fabi, M.

AU - Finetti, N.

AU - Laurenza, M.

AU - Telloni, D.

AU - Villani, M.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The European Space Agency LISA Pathfinder (LPF) mission orbited around the Sun-Earth first Lagrangian point L1 between January 2016 and July 2017. A particle detector aboard LPF allowed for galactic cosmic-ray (GCR) integral flux measurements above 70 MeV n− 1 between 2016 February 18 and 2017 July 3 during the descending phase of the present solar cycle N. 24, which is characterized by a positive polarity period. The statistical uncertainty on hourly-averaged GCR countings was of 1%. The characteristics of recurrent and non-recurrent GCR flux short-term variations observed with LPF are reported here. In particular, it is focused on GCR flux variation profiles and their association with the passage of large-scale interplanetary structures. Forbush decrease observations and geomagnetic storm occurrence during LPF are also briefly discussed.

AB - The European Space Agency LISA Pathfinder (LPF) mission orbited around the Sun-Earth first Lagrangian point L1 between January 2016 and July 2017. A particle detector aboard LPF allowed for galactic cosmic-ray (GCR) integral flux measurements above 70 MeV n− 1 between 2016 February 18 and 2017 July 3 during the descending phase of the present solar cycle N. 24, which is characterized by a positive polarity period. The statistical uncertainty on hourly-averaged GCR countings was of 1%. The characteristics of recurrent and non-recurrent GCR flux short-term variations observed with LPF are reported here. In particular, it is focused on GCR flux variation profiles and their association with the passage of large-scale interplanetary structures. Forbush decrease observations and geomagnetic storm occurrence during LPF are also briefly discussed.

U2 - 10.1393/ncc/i2019-19042-9

DO - 10.1393/ncc/i2019-19042-9

M3 - Article

AN - SCOPUS:85068579062

SN - 2037-4909

VL - 42

JO - Nuovo Cimento della Societa Italiana di Fisica C

JF - Nuovo Cimento della Societa Italiana di Fisica C

IS - 1

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ER -

Galactic cosmic-ray flux short-term variations and associated interplanetary structures with LISA Pathfinder

Abstract

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