Imperial College London


Faculty of Natural SciencesDepartment of Physics

Professor of Experimental Astrophysics



+44 (0)20 7594 7552t.sumner




1108Blackett LaboratorySouth Kensington Campus






BibTex format

author = {Armano, M and Audley, H and Baird, J and Benella, S and Binetruy, P and Born, M and Bortoluzzi, D and Castelli, E and Cavalleri, A and Cesarini, A and Cruise, AM and Danzmann, K and de, Deus Silva M and Diepholz, I and Dixon, G and Dolesi, R and Fabi, M and Ferraioli, L and Ferroni, V and Finetti, N and Fitzsimons, ED and Freschi, M and Gesa, L and Gibert, F and Giardini, D and Giusteri, R and Grimani, C and Grzymisch, J and Harrison, I and Heinzel, G and Hewitson, M and Hollington, D and Hoyland, D and Hueller, M and Inchauspe, H and Jennrich, O and Jetzer, P and Karnesis, N and Kaune, B and Korsakova, N and Killow, CJ and Kudela, K and Laurenza, M and Lobo, JA and Lloro, I and Liu, L and Lopez-Zaragoza, JP and Maarschalkerweerd, R and Mance, D and Meshksar, N and Martin, V and Martin-Polo, L and Martino, J and Martin-Porqueras, F and Mateos, I and McNamara, PW and Mendes, J and Mendes, L and Nofrarias, M and Paczkowski, S and Perreur-Lloyd, M and Petiteau, A and Pivato, P and Plagnol},
doi = {1538-4357/ab0c99},
journal = {Astrophysical Journal},
title = {Forbush Decreases and < 2 Day GCR Flux Non-recurrent Variations Studied with LISA Pathfinder},
url = {},
volume = {874},
year = {2019}

RIS format (EndNote, RefMan)

AB - Non-recurrent short-term variations of the galactic cosmic-ray (GCR) flux above 70 MeV n−1 were observed between 2016 February 18 and 2017 July 3 on board the European Space Agency LISA Pathfinder (LPF) mission orbiting around the Lagrange point L1 at 1.5 × 106 km from Earth. The energy dependence of three Forbush decreases is studied and reported here. A comparison of these observations with others carried out in space down to the energy of a few tens of MeV n−1 shows that the same GCR flux parameterization applies to events of different intensity during the main phase. FD observations in L1 with LPF and geomagnetic storm occurrence are also presented. Finally, the characteristics of GCR flux non-recurrent variations (peaks and depressions) of duration <2 days and their association with interplanetary structures are investigated. It is found that, most likely, plasma compression regions between subsequent corotating high-speed streams cause peaks, while heliospheric current sheet crossing causes the majority of the depressions.
AU - Armano,M
AU - Audley,H
AU - Baird,J
AU - Benella,S
AU - Binetruy,P
AU - Born,M
AU - Bortoluzzi,D
AU - Castelli,E
AU - Cavalleri,A
AU - Cesarini,A
AU - Cruise,AM
AU - Danzmann,K
AU - de,Deus Silva M
AU - Diepholz,I
AU - Dixon,G
AU - Dolesi,R
AU - Fabi,M
AU - Ferraioli,L
AU - Ferroni,V
AU - Finetti,N
AU - Fitzsimons,ED
AU - Freschi,M
AU - Gesa,L
AU - Gibert,F
AU - Giardini,D
AU - Giusteri,R
AU - Grimani,C
AU - Grzymisch,J
AU - Harrison,I
AU - Heinzel,G
AU - Hewitson,M
AU - Hollington,D
AU - Hoyland,D
AU - Hueller,M
AU - Inchauspe,H
AU - Jennrich,O
AU - Jetzer,P
AU - Karnesis,N
AU - Kaune,B
AU - Korsakova,N
AU - Killow,CJ
AU - Kudela,K
AU - Laurenza,M
AU - Lobo,JA
AU - Lloro,I
AU - Liu,L
AU - Lopez-Zaragoza,JP
AU - Maarschalkerweerd,R
AU - Mance,D
AU - Meshksar,N
AU - Martin,V
AU - Martin-Polo,L
AU - Martino,J
AU - Martin-Porqueras,F
AU - Mateos,I
AU - McNamara,PW
AU - Mendes,J
AU - Mendes,L
AU - Nofrarias,M
AU - Paczkowski,S
AU - Perreur-Lloyd,M
AU - Petiteau,A
AU - Pivato,P
AU - Plagnol,E
AU - Ramos-Castro,J
AU - Reiche,J
AU - Robertson,D
AU - Rivas,F
AU - Russano,G
AU - Slutsky,J
AU - Sopuerta,CF
AU - Sumner,T
AU - Telloni,D
AU - Texier,D
AU - Thorpe,J
AU - Vetrugno,D
AU - Villani,M
AU - Vitale,S
AU - Wanner,G
AU - Ward,H
AU - Wass,P
AU - Weber,WJ
AU - Wissel,L
AU - Wittchen,A
AU - Zweifel,P
DO - 1538-4357/ab0c99
PY - 2019///
SN - 0004-637X
TI - Forbush Decreases and < 2 Day GCR Flux Non-recurrent Variations Studied with LISA Pathfinder
T2 - Astrophysical Journal
UR -
UR -
UR -
VL - 874
ER -