Details
| Original language | English |
|---|---|
| Article number | 113 |
| Journal | Astrophysical Journal |
| Volume | 854 |
| Issue number | 2 |
| Publication status | Published - 20 Feb 2018 |
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.
Keywords
- cosmic rays, instrumentation: interferometers, interplanetary medium, solarterrestrial relations, Sun: heliosphere, Sun: rotation
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Astrophysical Journal, Vol. 854, No. 2, 113, 20.02.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Characteristics and Energy Dependence of Recurrent Galactic Cosmic-Ray Flux Depressions and of a Forbush Decrease with LISA Pathfinder
AU - Armano, M.
AU - Audley, H.
AU - Baird, J.
AU - Bassan, M.
AU - Benella, S.
AU - Binetruy, P.
AU - Born, M.
AU - Bortoluzzi, D.
AU - Cavalleri, A.
AU - Cesarini, A.
AU - Cruise, A. M.
AU - Danzmann, K.
AU - Silva, M. De Deus
AU - Diepholz, I.
AU - Dixon, G.
AU - Dolesi, R.
AU - Fabi, M.
AU - Ferraioli, L.
AU - Ferroni, V.
AU - Finetti, N.
AU - Fitzsimons, E. D.
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 - Inchauspé, H.
AU - Jennrich, O.
AU - Jetzer, P.
AU - Karnesis, N.
AU - Kaune, B.
AU - Korsakova, N.
AU - Killow, C. J.
AU - Laurenza, M.
AU - Lobo, J. A.
AU - Lloro, I.
AU - Liu, L.
AU - López-zaragoza, J. P.
AU - Maarschalkerweerd, R.
AU - Mance, D.
AU - Martín, V.
AU - Martin-polo, L.
AU - Martino, J.
AU - Martin-porqueras, F.
AU - Mateos, I.
AU - Mcnamara, P. W.
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. I.
AU - Rivas, F.
AU - Russano, G.
AU - Sabbatini, F.
AU - Slutsky, J.
AU - Sopuerta, C. F.
AU - Sumner, T.
AU - Telloni, D.
AU - Texier, D.
AU - Thorpe, J. I.
AU - Vetrugno, D.
AU - Vitale, S.
AU - Wanner, G.
AU - Ward, H.
AU - Wass, P.
AU - Weber, W. J.
AU - Wissel, L.
AU - Wittchen, A.
AU - Zambotti, A.
AU - Zanoni, C.
AU - Zweifel, P.
N1 - Funding information: The authors are grateful to the anonymous reviewer for his/ her constructive comments and precious suggestions that helped them to greatly improve the manuscript. D. Telloni is financially supported by the Italian Space Agency (ASI) under contract I/013/12/0. Sunspot number and solar modulation parameter data were gathered from?http://www.sidc.be/silso/ home and?http://cosmicrays.oulu.fi/phi/Phi_mon.txt, respectively. Data from Wind and ACE experiments were obtained from the NASA-CDAWeb website. We acknowledge the NMDB database (http://www.nmdb.eu) funded under the European Union’s FP7 programme (contract No. 213007), and the PIs of individual neutron monitors for providing data. HCS crossing was taken from?http://omniweb.sci.gsfc.nasa.gov./ html/polarity/polarity_tab.html. This work has been made possible by the LISA Pathfinder mission, which is part of the space-science program of the European Space Agency. The French contribution has been supported by the CNES (Accord Specific de projet CNES 1316634/CNRS 103747), the CNRS, the Observatoire de Paris, and the University Paris-Diderot. E.P. and H.I. also acknowledge the financial support of the UnivEarthS Labex program at Sorbonne Paris Cite’ (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02). The Albert-Einstein-Institut acknowledges the support of the German Space Agency, DLR. The work is supported by the Federal Ministry for Economic Affairs and Energy based on a resolution of the German Bundestag (FKZ 50OQ0501 and FKZ 50OQ1601). The Italian contribution has been supported by Agenzia Spaziale Italiana and Instituto Nazionale di Fisica Nucleare. The Spanish contribution has been supported by Contracts No. AYA2010-15709 (MICINN), No. ESP2013-47637-P, and No. ESP2015-67234-P (MINECO). M.N. acknowledges support from Fundacion General CSIC (Programa’ComFuturo). F.R. acknowledges an FPI contract (MINECO). The Swiss contribution acknowledges the support of the Swiss Space Office (SSO) via the PRODEX Program of ESA. L.F. acknowledges the support of the Swiss National Science Foundation. The United Kingdom groups acknowledge support from the United Kingdom Space Agency (UKSA), the University of Glasgow, the University of Birmingham, Imperial College, and the Scottish Universities Physics Alliance (SUPA). J.I.T. and J.S. acknowledge the support of the U.S. National Aeronautics and Space Administration (NASA). N.K. acknowledges the support of the Newton International Fellowship from the Royal Society.
PY - 2018/2/20
Y1 - 2018/2/20
N2 - 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.
AB - 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.
KW - cosmic rays
KW - instrumentation: interferometers
KW - interplanetary medium
KW - solarterrestrial relations
KW - Sun: heliosphere
KW - Sun: rotation
UR - http://www.scopus.com/inward/record.url?scp=85042698807&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/aaa774
DO - 10.3847/1538-4357/aaa774
M3 - Article
VL - 854
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 113
ER -