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Carlson, Per
Publications (10 of 26) Show all publications
Abdellaoui, G., Abe, S., Adams, J. H., Ahriche, A., Allard, D., Allen, L., . . . Marchi, A. Z. (2018). First observations of speed of light tracks by a fluorescence detector looking down on the atmosphere. Journal of Instrumentation, 13, Article ID P05023.
Open this publication in new window or tab >>First observations of speed of light tracks by a fluorescence detector looking down on the atmosphere
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2018 (English)In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 13, article id P05023Article in journal (Refereed) Published
Abstract [en]

EUSO-Balloon is a pathfinder mission for the Extreme Universe Space Observatory onboard the Japanese Experiment Module (JEM-EUSO). It was launched on the moonless night of the 25(th) of August 2014 from Timmins, Canada. The flight ended successfully after maintaining the target altitude of 38 km for five hours. One part of the mission was a 2.5 hour underflight using a helicopter equipped with three UV light sources (LED, xenon flasher and laser) to perform an inflight calibration and examine the detectors capability to measure tracks moving at the speed of light. We describe the helicopter laser system and details of the underflight as well as how the laser tracks were recorded and found in the data. These are the first recorded laser tracks measured from a fluorescence detector looking down on the atmosphere. Finally, we present a first reconstruction of the direction of the laser tracks relative to the detector.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD, 2018
Keywords
Detectors for UV, visible and IR photons, Lasers, Balloon instrumentation, Space instrumentation
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-231633 (URN)10.1088/1748-0221/13/05/P05023 (DOI)000432931100003 ()2-s2.0-85048075268 (Scopus ID)
Note

QC 20180903

Available from: 2018-09-03 Created: 2018-09-03 Last updated: 2018-09-03Bibliographically approved
Menn, W., Bogomolov, E. A., Simon, M., Vasilyev, G., Adriani, O., Barbarino, G. C., . . . Zampa, N. (2018). Lithium and Beryllium Isotopes with the PAMELA Experiment. Astrophysical Journal, 862(2), Article ID 141.
Open this publication in new window or tab >>Lithium and Beryllium Isotopes with the PAMELA Experiment
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2018 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 862, no 2, article id 141Article in journal (Refereed) Published
Abstract [en]

The cosmic ray (CR) lithium and beryllium (Li-6, Li-7, Be-7, Be-9, Be-10) isotopic composition has been measured with the satellite-borne experiment PAMELA, which was launched into low-Earth orbit on board the Resurs-DKJ satellite on 2006 June 15. The rare lithium and beryllium isotopes in CRs are believed to originate mainly from the interaction of high-energy carbon, nitrogen, and oxygen nuclei with the interstellar medium (ISM), but also on "tertiary" interactions in the ISM (i.e., produced by further fragmentation of secondary beryllium and boron). In this paper, the isotopic ratios Li-7/Li-6 and Be-7/(Be-9 + Be-10), measured between 150 and 1100 MeV n(-1) using two different detector systems from 2006 July to 2014 September, will be presented.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2018
Keywords
astroparticle physics, cosmic rays
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-233280 (URN)10.3847/1538-4357/aacf89 (DOI)000440621800003 ()2-s2.0-85051533703 (Scopus ID)
Note

QC 20180822

Available from: 2018-08-22 Created: 2018-08-22 Last updated: 2018-10-16Bibliographically approved
Martucci, M., Munini, R., Boezio, M., Di Felice, V., Adriani, O., Barbarino, G. C., . . . Raath, J. L. (2018). Proton Fluxes Measured by the PAMELA Experiment from the Minimum to the Maximum Solar Activity for Solar Cycle 24. Astrophysical Journal Letters, 854(1), Article ID L2.
Open this publication in new window or tab >>Proton Fluxes Measured by the PAMELA Experiment from the Minimum to the Maximum Solar Activity for Solar Cycle 24
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2018 (English)In: Astrophysical Journal Letters, ISSN 2041-8205, E-ISSN 2041-8213, Vol. 854, no 1, article id L2Article in journal (Refereed) Published
Abstract [en]

Precise measurements of the time-dependent intensity of the low-energy (<50 GeV) galactic cosmic rays (GCRs) are fundamental to test and improve the models that describe their propagation inside the heliosphere. In particular, data spanning different solar activity periods, i.e., from minimum to maximum, are needed to achieve comprehensive understanding of such physical phenomena. The minimum phase between solar cycles 23 and 24 was peculiarly long, extending up to the beginning of 2010 and followed by the maximum phase, reached during early 2014. In this Letter, we present proton differential spectra measured from 2010 January to 2014 February by the PAMELA experiment. For the first time the GCR proton intensity was studied over a wide energy range (0.08-50 GeV) by a single apparatus from a minimum to a maximum period of solar activity. The large statistics allowed the time variation to be investigated on a nearly monthly basis. Data were compared and interpreted in the context of a state-of-the-art three-dimensional model describing the GCRs propagation through the heliosphere.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2018
Keywords
astroparticle physics, cosmic rays, Sun: heliosphere
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-223499 (URN)10.3847/2041-8213/aaa9b2 (DOI)000424238600002 ()2-s2.0-85042130192 (Scopus ID)
Note

QC 20180223

Available from: 2018-02-23 Created: 2018-02-23 Last updated: 2018-02-23Bibliographically approved
De Angelis, A., Tatischeff, V., Grenier, I. A., McEnery, J., Mallamaci, M., Tavani, M., . . . Zoglauer, A. (2018). Science with e-ASTROGAM A space mission for MeV-GeV gamma-ray astrophysics. JOURNAL OF HIGH ENERGY ASTROPHYSICS, 19, 1-106
Open this publication in new window or tab >>Science with e-ASTROGAM A space mission for MeV-GeV gamma-ray astrophysics
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2018 (English)In: JOURNAL OF HIGH ENERGY ASTROPHYSICS, ISSN 2214-4048, Vol. 19, p. 1-106Article in journal (Refereed) Published
Abstract [en]

e-ASTROGAM ('enhanced ASTROGAM') is a breakthrough Observatory space mission, with a detector composed by a Silicon tracker, a calorimeter, and an anticoincidence system, dedicated to the study of the non-thermal Universe in the photon energy range from 0.3 MeV to 3 GeV - the lower energy limit can be pushed to energies as low as 150 keV for the tracker, and to 30 keV for calorimetric detection. The mission is based on an advanced space-proven detector technology, with unprecedented sensitivity, angular and energy resolution, combined with polarimetric capability. Thanks to its performance in the MeV-GeV domain, substantially improving its predecessors, e-ASTROGAM will open a new window on the non-thermal Universe, making pioneering observations of the most powerful Galactic and extragalactic sources, elucidating the nature of their relativistic outflows and their effects on the surroundings. With a line sensitivity in the MeV energy range one to two orders of magnitude better than previous generation instruments, e-ASTROGAM will determine the origin of key isotopes fundamental for the understanding of supernova explosion and the chemical evolution of our Galaxy. The mission will provide unique data of significant interest to a broad astronomical community, complementary to powerful observatories such as LIGO-Virgo-GEO600-KAGRA, SKA, ALMA, E-ELT, TMT, LSST, JWST, Athena, CTA, IceCube, KM3NeT, and LISA.

Place, publisher, year, edition, pages
Elsevier, 2018
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-239505 (URN)10.1016/j.jheap.2018.07.001 (DOI)000449510800001 ()000449510800001 (Scopus ID)
Note

QC 20181203

Available from: 2018-12-03 Created: 2018-12-03 Last updated: 2018-12-03Bibliographically approved
Bruno, A., Carlson, P., Pearce, M., Zampa, N. & et al., . (2018). Solar Energetic Particle Events Observed by the PAMELA Mission. Astrophysical Journal, 862(2), Article ID 97.
Open this publication in new window or tab >>Solar Energetic Particle Events Observed by the PAMELA Mission
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2018 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 862, no 2, article id 97Article in journal (Refereed) Published
Abstract [en]

Despite the significant progress achieved in recent years, the physical mechanisms underlying the origin of solar energetic particles (SEPs) are still a matter of debate. The complex nature of both particle acceleration and transport poses challenges to developing a universal picture of SEP events that encompasses both the low-energy (from tens of keV to a few hundreds of MeV) observations made by space-based instruments and the GeV particles detected by the worldwide network of neutron monitors in ground-level enhancements (GLEs). The high-precision data collected by the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) satellite experiment offer a unique opportunity to study the SEP fluxes between similar to 80 MeV and a few GeV, significantly improving the characterization of the most energetic events. In particular, PAMELA can measure for the first time with good accuracy the spectral features at moderate and high energies, providing important constraints for current SEP models. In addition, the PAMELA observations allow the relationship between low and high-energy particles to be investigated, enabling a clearer view of the SEP origin. No qualitative distinction between the spectral shapes of GLE, sub-GLE and non-GLE events is observed, suggesting that GLEs are not a separate class, but are the subset of a continuous distribution of SEP events that are more intense at high energies. While the spectral forms found are to be consistent with diffusive shock acceleration theory, which predicts spectral rollovers at high energies that are attributed to particles escaping the shock region during acceleration, further work is required to explore the relative influences of acceleration and transport processes on SEP spectra.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD, 2018
Keywords
acceleration of particles, coronal mass ejections (CMEs), solar-terrestrial relations, space vehicles, Sun: flares, Sun: particle emission
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
urn:nbn:se:kth:diva-241148 (URN)10.3847/1538-4357/aacc26 (DOI)000440020900007 ()2-s2.0-85051457381 (Scopus ID)
Note

QC 20190114

Available from: 2019-01-14 Created: 2019-01-14 Last updated: 2019-01-14Bibliographically approved
Mikhailov, V. V., Adriani, O., Bazilevskaya, G. A., Barbarino, G. C., Bellotti, R., Bogomolov, E. A., . . . Yurkin, Y. T. (2018). Trapped Positrons and Electrons in the Inner Radiation Belt According to Data of the PAMELA Experiment. Physics of Atomic Nuclei, 81(4), 515-519
Open this publication in new window or tab >>Trapped Positrons and Electrons in the Inner Radiation Belt According to Data of the PAMELA Experiment
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2018 (English)In: Physics of Atomic Nuclei, ISSN 1063-7788, E-ISSN 1562-692X, Vol. 81, no 4, p. 515-519Article in journal (Refereed) Published
Abstract [en]

Measurements of secondary-electron and secondary-positron fluxes below the geomagnetic cutoff in near-Earth space were performed by means of the PAMELA magnetic spectrometer installed on board the Resurs-DK1 satellite launched on June 15, 2006, in an elliptical orbit of inclination 70A degrees and altitude 350 to 600 km. This spectrometer permits measuring the fluxes of electrons and positrons over a wide energy range, as well as determining their spatial distributions to a precision of about 2A degrees. A calculation of particle trajectories in the geomagnetic field makes it possible to separate electrons and positrons originating from cosmic-ray interactions in the Earth's magnetosphere. The spatial distributions of quasitrapped, trapped, and short-lived albedo positrons and electrons of energy above 70 MeV in the radiation belt were analyzed. The ratio of the electron-to-positron fluxes and the energy spectra of the electrons and positrons in question are indicative of different productionmechanisms for stably trapped and quasitrapped secondary particles.

Place, publisher, year, edition, pages
PLEIADES PUBLISHING INC, 2018
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-234208 (URN)10.1134/S1063778818040129 (DOI)000441871000012 ()2-s2.0-85051714633 (Scopus ID)
Note

QC 20180906

Available from: 2018-09-06 Created: 2018-09-06 Last updated: 2018-10-19Bibliographically approved
Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., Bellotti, R., Boezio, M., Bogomolov, E. A., . . . Zampa, N. (2018). Unexpected Cyclic Behavior in Cosmic-Ray Protons Observed by PAMELA at 1 au. Astrophysical Journal Letters, 852(2), Article ID L28.
Open this publication in new window or tab >>Unexpected Cyclic Behavior in Cosmic-Ray Protons Observed by PAMELA at 1 au
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2018 (English)In: Astrophysical Journal Letters, ISSN 2041-8205, E-ISSN 2041-8213, Vol. 852, no 2, article id L28Article in journal (Refereed) Published
Abstract [en]

Protons detected by the PAMELA experiment in the period 2006-2014 have been analyzed in the energy range between 0.40 and 50 GV to explore possible periodicities besides the well known solar undecennial modulation. An unexpected clear and regular feature has been found at rigidities below 15 GV, with a quasi-periodicity of similar to 450 days. A possible Jovian origin of this periodicity has been investigated in different ways. The results seem to favor a small but not negligible contribution to cosmic rays from the Jovian magnetosphere, even if other explanations cannot be excluded.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD, 2018
Keywords
cosmic rays, Sun: heliosphere
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-221941 (URN)10.3847/2041-8213/aaa403 (DOI)000419785000004 ()2-s2.0-85040668902 (Scopus ID)
Note

QC 20180130

Available from: 2018-01-30 Created: 2018-01-30 Last updated: 2018-01-30Bibliographically approved
Abdellaoui, G., Capel, F., Carlson, P., Fuglesang, C., Larsson, O., Zuccaro Marchi, A. & et.al., . (2017). Cosmic ray oriented performance studies for the JEM-EUSO first level trigger. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 150-163
Open this publication in new window or tab >>Cosmic ray oriented performance studies for the JEM-EUSO first level trigger
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2017 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, p. 150-163Article in journal (Refereed) Published
Abstract [en]

JEM-EUSO is a space mission designed to investigate Ultra-High Energy Cosmic Rays and Neutrinos (E > 5.10(19) eV) from the International Space Station (ISS). Looking down from above its wide angle telescope is able to observe their air showers and collect such data from a very wide area. Highly specific trigger algorithms are needed to drastically reduce the data load in the presence of both atmospheric and human activity related background light, yet retain the rare cosmic ray events recorded in the telescope. We report the performance in offline testing of the first level trigger algorithm on data from JEM-EUSO prototypes and laboratory measurements observing different light sources: data taken during a high altitude balloon flight over Canada, laser pulses observed from the ground traversing the real atmosphere, and model landscapes reproducing realistic aspect ratios and light conditions as would be seen from the ISS itself. The first level trigger logic successfully kept the trigger rate within the permissible bounds when challenged with artificially produced as well as naturally encountered night sky background fluctuations and while retaining events with general air-shower characteristics.

Place, publisher, year, edition, pages
Elsevier, 2017
Keywords
JEM-EUSO; Trigger system; FPGA; Nightglow background
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-214415 (URN)10.1016/j.nima.2017.05.043 (DOI)000407863700020 ()2-s2.0-85021224738 (Scopus ID)
Note

QC 20170913

Available from: 2017-09-13 Created: 2017-09-13 Last updated: 2017-09-13Bibliographically approved
Menn, W., Bogomolov, E. A., Simon, M., Vasilyev, G. I., Adriani, O., Barbarino, G. C., . . . Zampa, N. (2017). Cosmic-ray lithium and beryllium isotopes in the PAMELA-experiment. In: Proceedings of Science: . Paper presented at 35th International Cosmic Ray Conference, ICRC 2017, 10 July 2017 through 20 July 2017. Sissa Medialab Srl
Open this publication in new window or tab >>Cosmic-ray lithium and beryllium isotopes in the PAMELA-experiment
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2017 (English)In: Proceedings of Science, Sissa Medialab Srl , 2017Conference paper, Published paper (Refereed)
Abstract [en]

The PAMELA space experiment was launched on the 15th of June 2006 from the Baikonur cosmodrome. The scientific objectives addressed by the mission are the measurement of the antiprotons and positrons spectra in cosmic rays, the hunt for antinuclei as well as the determination of light nuclei fluxes from hydrogen to oxygen in a wide energy range and with high statistics. The apparatus comprises a time-of-flight system, a magnetic spectrometer (permanent magnet) with an silicon-microstrip tracking system, an imaging calorimeter built from layers of siliconmicrostrip detectors interleaved with plates of tungsten, an anti-coincidence system, a shower tail scintillator-counter and a neutron detector. The instrument in its detector-combination is also capable to identify isotopes, using the rigidity information from the magnetic spectrometer together with the time-of-flight measurement or with the multiple dE/dx measurement in the calorimeter. In this paper details about the analysis method and new results of the isotopic ratios of lithium and beryllium with increased statistics will be presented. 

Place, publisher, year, edition, pages
Sissa Medialab Srl, 2017
Keywords
Beryllium, Calorimeters, Cosmic ray measurement, Cosmology, Isotopes, Lithium, Magnetic resonance spectrometers, Particle spectrometers, Permanent magnets, Silicon detectors, Imaging calorimeters, Magnetic spectrometers, Scientific objectives, Scintillator counters, Silicon micro-strip, Space experiments, Time of flight measurements, Time of flight systems, Cosmic rays
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
urn:nbn:se:kth:diva-236836 (URN)2-s2.0-85046060923 (Scopus ID)
Conference
35th International Cosmic Ray Conference, ICRC 2017, 10 July 2017 through 20 July 2017
Funder
Swedish National Space BoardSwedish Research Council
Note

QC 20181221

Available from: 2018-12-21 Created: 2018-12-21 Last updated: 2018-12-21Bibliographically approved
Ricci, M., Pizzella, G., Martucci, M., Bruno, A., Di Felice, V., Marcelli, N., . . . Zampa, N. (2017). Effect of the Jupiter magnetosphere on the cosmic ray protons measured with the PAMELA experiment. In: Proceedings of Science: . Paper presented at 35th International Cosmic Ray Conference, ICRC 2017, 10 July 2017 through 20 July 2017. Sissa Medialab Srl
Open this publication in new window or tab >>Effect of the Jupiter magnetosphere on the cosmic ray protons measured with the PAMELA experiment
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2017 (English)In: Proceedings of Science, Sissa Medialab Srl , 2017Conference paper, Published paper (Refereed)
Abstract [en]

The very intense Jovian magnetic field produces a magnetosphere where high-energy charged particles are trapped, allowing the possibility for acceleration mechanism that could inject those particles in the open space. In the last decades, accelerated electrons from the Jupiter magnetosphere have been detected and studied in the interplanetary space.This work investigated whether the proton data obtained by the PAMELA space-borne detector between July 9th, 2006 to August 31th, 2014 shows signatures that arise from Jupiter. In this proceeding the basis of the analysis of cosmic ray protons by PAMELA are described and results will be shown at the conference. 

Place, publisher, year, edition, pages
Sissa Medialab Srl, 2017
Keywords
Charged particles, Cosmology, Interplanetary flight, Magnetosphere, Accelerated electrons, Acceleration mechanisms, Cosmic ray protons, High energy charged particle, Jupiters, Space-borne, Cosmic rays
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
urn:nbn:se:kth:diva-236874 (URN)2-s2.0-85046060766 (Scopus ID)
Conference
35th International Cosmic Ray Conference, ICRC 2017, 10 July 2017 through 20 July 2017
Funder
Swedish National Space BoardSwedish Research Council
Note

QC 20181214

Available from: 2018-12-14 Created: 2018-12-14 Last updated: 2018-12-14Bibliographically approved
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