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  Forbush decreases and < 2-day GCR flux non-recurrent variations studied with LISA Pathfinder

Grimani, C., Armano, M., Audley, H., Baird, J., Benella, S., Binetruy, P., et al. (2019). Forbush decreases and < 2-day GCR flux non-recurrent variations studied with LISA Pathfinder. Astrophysical Journal, 874: 167. doi:10.3847/1538-4357/ab0c99.

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Grimani, C., Autor
Armano, M., Autor
Audley, H.1, Autor           
Baird, J., Autor
Benella, S., Autor
Binetruy, P., Autor
Born, M.1, Autor           
Bortoluzzi, D., Autor
Castelli, E., Autor
Cavalleri, A., Autor
Cesarini, A., Autor
Cruise, A. M., Autor
Danzmann, K.1, Autor           
Silva, M. de Deus, Autor
Diepholz, I.1, Autor           
Dixon, G., Autor
Dolesi, R., Autor
Fabi, M., Autor
Ferraioli, L., Autor
Ferroni, V., Autor
Finetti, N., AutorFitzsimons, E. D., AutorFreschi, M., AutorGesa, L., AutorGibert, F., AutorGiardini, D., AutorGiusteri, R., AutorGrzymisch, J., AutorHarrison, I., AutorHeinzel, G.1, Autor           Hewitson, M.2, Autor           Hollington, D., AutorHoyland, D., AutorHueller, M., AutorInchauspé, H., AutorJennrich, O., AutorJetzer, P., AutorKarnesis , N.1, AutorKaune, B.1, Autor           Korsakova, N., AutorKillow, C. J., AutorKudela, K., AutorLaurenza, M., AutorLobo, J. A., AutorLloro, I., AutorLiu, L., AutorLópez-Zaragoza, J. P., AutorMaarschalkerweerd, R., AutorMance, D., AutorMeshksar, N., AutorMartín, V., AutorMartin-Polo, L., AutorMartino, J., AutorMartin-Porqueras, F., AutorMateos, I., AutorMcNamara, P. W., AutorMendes, J., AutorMendes, L., AutorNofrarias, M., AutorPaczkowski, S.1, Autor           Perreur-Lloyd, M., AutorPetiteau, A., AutorPivato, P., AutorPlagnol, E., AutorRamos-Castro, J., AutorReiche, J.1, Autor           Robertson, D. I., AutorRivas, F., AutorRussano, G., AutorSlutsky, J., AutorSopuerta, C. F., AutorSumner, T., AutorTelloni, D., AutorTexier, D., AutorThorpe, J. I., AutorVetrugno, D., AutorVillani, M., AutorVitale, S., AutorWanner, G.1, Autor           Ward, H., AutorWass, P., AutorWeber, W. J., AutorWissel, L.1, Autor           Wittchen, A.1, Autor           Zweifel, P., Autor mehr..
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              
2Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Schlagwörter: Physics, Space Physics, physics.space-ph, Astrophysics, Earth and Planetary Astrophysics, astro-ph.EP, Astrophysics, Solar and Stellar Astrophysics, astro-ph.SR
 Zusammenfassung: 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
aboard the European Space Agency LISA Pathfinder (LPF) mission orbiting around
the Lagrange point L1 at 1.5$\times$10$^6$ km from Earth. The energy dependence
of three Forbush decreases (FDs) 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 is 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 cause the majority of the depressions.

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 Datum: 2019-04-092019
 Publikationsstatus: Erschienen
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Titel: Astrophysical Journal
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Chicago, IL : University of Chicago Press for the American Astronomical Society
Seiten: - Band / Heft: 874 Artikelnummer: 167 Start- / Endseite: - Identifikator: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_2