Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.;Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy..
Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron G Galilei, I-35131 Padua, Italy..
Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
Univ Alabama, Ctr Space Plasma & Aeron Res CSPAR, Huntsville, AL 35899 USA..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.;Univ Turin, Dipartimento Fis, I-10125 Turin, Italy..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;Univ Maryland, Dept Astron, College Pk, MD 20742 USA..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.;Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy..
Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, F-34095 Montpellier, France..
Ecole Polytech, Lab Leprince Ringuet, CNRS, IN2P3, F-91128 Palaiseau, France..
DESY, D-15738 Zeuthen, Germany..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;Ctr Res & Explorat Space Sci & Technol CRESST, Greenbelt, MD 20771 USA..
INAF Ist Astrofis Spaziale & Fis Cosm Milano, Via E Bassini 15, I-20133 Milan, Italy..
Italian Space Agcy, Via Politecn Snc, I-00133 Rome, Italy..
Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy..
Naval Res Lab, Space Sci Div, Washington, DC 20375 USA..
INAF Ist Astrofis Spaziale & Fis Cosm Milano, Via E Bassini 15, I-20133 Milan, Italy..
Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.;Agenzia Spaziale Italiana, Space Sci Data Ctr, Via Politecn Snc, I-00133 Rome, Italy..
Univ Padua, Dept Stat Sci, Via 8 Febbraio,2, I-35122 Padua, Italy..
Univ Maryland, Dept Astron, College Pk, MD 20742 USA..
Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Ist Radioastron, INAF, I-40129 Bologna, Italy.;Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy..
Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy..
Clemson Univ, Dept Phys & Astron, Kinard Lab Phys, Clemson, SC 29634 USA..
Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy..
Univ Pisa, I-56127 Pisa, Italy.;Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Univ Johannesburg, Dept Phys, POB 524, ZA-2006 Auckland Pk, South Africa..
Ecole Polytech, Lab Leprince Ringuet, CNRS, IN2P3, F-91128 Palaiseau, France..
DESY, D-15738 Zeuthen, Germany..
Hiroshima Univ, Dept Phys Sci, Higashihiroshima, Hiroshima 7398526, Japan..
Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Agenzia Spaziale Italiana, Space Sci Data Ctr, Via Politecn Snc, I-00133 Rome, Italy.;Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Ist Radioastron, INAF, I-40129 Bologna, Italy..
Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
Univ Paris Saclay, Univ Paris Diderot, Sorbonne Paris Cite, CEA,AIM,CNRS, F-91191 Gif Sur Yvette, France..
Naval Res Lab, Space Sci Div, Washington, DC 20375 USA..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;George Washington Univ, Dept Phys, 725 21st St,NW, Washington, DC 20052 USA..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA..
Univ North Florida, Dept Phys, 1 UNF Dr, Jacksonville, FL 32224 USA..
Ecole Polytech, Lab Leprince Ringuet, CNRS, IN2P3, F-91128 Palaiseau, France..
Univ Iceland, Sci Inst, IS-107 Reykjavik, Iceland.;NORDITA, Royal Inst Technol, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.;Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA..
Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy..
DESY, D-15738 Zeuthen, Germany..
Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.;Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Naval Res Lab, Space Sci Div, Washington, DC 20375 USA..
Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy..
Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy..
Univ Pisa, I-56127 Pisa, Italy.;Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.;Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria..
Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA.;Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA..
Mahidol Univ, Fac Sci, Dept Phys, Bangkok 10400, Thailand..
Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Higashihiroshima, Hiroshima 7398526, Japan..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
UAB, IFAE, Edifici Cn, E-08193 Bellaterra, Barcelona, Spain..
Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy..
Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.;Univ Turin, Dipartimento Fis, I-10125 Turin, Italy..
Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, F-34095 Montpellier, France..
Hiroshima Univ, Dept Phys Sci, Higashihiroshima, Hiroshima 7398526, Japan..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Ist Radioastron, INAF, I-40129 Bologna, Italy..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.;Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy..
DESY, D-15738 Zeuthen, Germany..
Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.;Ist Nazl Astrofis, Osservatorio Astron Trieste, I-34143 Trieste, Italy..
Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Univ Montpellier, Lab Univers & Particules Montpellier, CNRS, IN2P3, F-34095 Montpellier, France..
Univ Alabama, Ctr Space Plasma & Aeron Res CSPAR, Huntsville, AL 35899 USA..
Hiroshima Univ, Dept Phys Sci, Higashihiroshima, Hiroshima 7398526, Japan..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, Erwin Rommel Str 1, D-91058 Erlangen, Germany..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.;Univ Padua, Dipartimento Fis & Astron G Galilei, I-35131 Padua, Italy..
Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
Univ Johannesburg, Dept Phys, POB 524, ZA-2006 Auckland Pk, South Africa..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.;Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.;Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.;Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.;Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria..
Univ Bordeaux 1, IN2P3, CNRS, Ctr Etud Nucl Bordeaux Gradignan, BP120, F-33175 Gradignan, France..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy..
Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA..
Adiyaman Univ, TR-02040 Adiyaman, Turkey..
Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
Univ & Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy.;Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy..
Purdue Univ Northwest, Hammond, IN 46323 USA..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.;Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan..
Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;Univ Maryland, Dept Astron, College Pk, MD 20742 USA..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Inst Space Sci CSICIEEC, Campus UAB,Carrer Magrans S-N, E-08193 Barcelona, Spain.;Inst Catalana Recerca & Estudis Avancats ICREA, E-08010 Barcelona, Spain..
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;Univ Maryland, Dept Astron, College Pk, MD 20742 USA..
Ecole Polytech, Lab Leprince Ringuet, CNRS, IN2P3, F-91128 Palaiseau, France..
Univ Alabama, Ctr Space Plasma & Aeron Res CSPAR, Huntsville, AL 35899 USA..
Stanford Univ, Dept Phys, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA..
Max Planck Inst Extraterr Phys, D-85748 Garching, Germany..
Praxis Inc, Alexandria, VA 22303 USA.;Naval Res Lab, Washington, DC 20375 USA..
Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.;Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy..
Albert Einstein Inst, Max Planck Inst Gravitationsphys, D-30167 Hannover, Germany..
Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.;Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria.;Univ Geneva, DPNC, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland..
Institute of Physics Publishing (IOPP), 2019. Vol. 878, no 1, article id 52