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Characteristics and Energy Dependence of Recurrent Galactic Cosmic-Ray Flux Depressions and of a Forbush Decrease with LISA Pathfinder

  • M. Armano
  • , H. Audley
  • , J. Baird
  • , M. Bassan
  • , S. Benella
  • , P. Binetruy
  • , M. Born
  • , D. Bortoluzzi
  • , A. Cavalleri
  • , A. Cesarini
  • , A. M. Cruise
  • , K. Danzmann
  • , M. De Deus Silva
  • , I. Diepholz
  • , G. Dixon
  • , R. Dolesi
  • , M. Fabi
  • , L. Ferraioli
  • , V. Ferroni
  • , N. Finetti
  • E. D. Fitzsimons, M. Freschi, L. Gesa, F. Gibert, D. Giardini, R. Giusteri, C. Grimani, J. Grzymisch, I. Harrison, G. Heinzel, M. Hewitson, D. Hollington, D. Hoyland, M. Hueller, H. Inchauspé, O. Jennrich, P. Jetzer, N. Karnesis, B. Kaune, N. Korsakova, C. J. Killow, M. Laurenza, J. A. Lobo, I. Lloro, L. Liu, J. P. López-Zaragoza, R. Maarschalkerweerd, D. Mance, V. Martín, L. Martin-Polo, J. Martino, F. Martin-Porqueras, I. Mateos, P. W. McNamara, J. Mendes, L. Mendes, M. Nofrarias, S. Paczkowski, M. Perreur-Lloyd, A. Petiteau, P. Pivato, E. Plagnol, J. Ramos-Castro, J. Reiche, D. I. Robertson, F. Rivas, G. Russano, F. Sabbatini, J. Slutsky, C. F. Sopuerta, T. Sumner, D. Telloni, D. Texier, J. I. Thorpe, D. Vetrugno, S. Vitale, G. Wanner, H. Ward, P. Wass, W. J. Weber, L. Wissel, A. Wittchen, A. Zambotti, C. Zanoni, P. Zweifel
  • ESAC campus
  • Max-Planck-Institut fuer Gravitationsphysik
  • Imperial College London
  • University of Rome “Tor Vergata”
  • University of Urbino Carlo Bo
  • Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
  • CEA/UVSQ/CNRS
  • Università di Trento
  • Trento Institute for Fundamental Physics and Applications
  • Fondazione Bruno Kessler
  • University of Birmingham
  • ETH Zurich
  • Università Dell'Aquila
  • Royal Observatory
  • University of São Paulo
  • ESTEC - European Space Research and Technology Centre
  • European Space Agency / ESOC
  • Physik-Institut der Universität Zürich
  • University of Glasgow
  • Istituto di Astrofisica e Planetologia Spaziali (IAPS)
  • Universidad Politecnica de Catalunia
  • NASA Goddard Space Flight Center

Research output: Contribution to journalArticlepeer-review

Abstract

Galactic cosmic-ray (GCR) energy spectra observed in the inner heliosphere are modulated by the solar activity, the solar polarity and structures of solar and interplanetary origin. A high counting rate particle detector (PD) aboard LISA Pathfinder, meant for subsystems diagnostics, was devoted to the measurement of GCR and solar energetic particle integral fluxes above 70 MeV n -1 up to 6500 counts s -1 . PD data were gathered with a sampling time of 15 s. Characteristics and energy dependence of GCR flux recurrent depressions and of a Forbush decrease dated 2016 August 2 are reported here. The capability of interplanetary missions, carrying PDs for instrument performance purposes, in monitoring the passage of interplanetary coronal mass ejections is also discussed.

Original languageEnglish
Article number113
JournalAstrophysical Journal
Volume854
Issue number2
DOIs
Publication statusPublished - 20 Feb 2018
Externally publishedYes

Keywords

  • Sun: heliosphere
  • Sun: rotation
  • cosmic rays
  • instrumentation: interferometers
  • interplanetary medium
  • solarterrestrial relations

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