The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation

S. W. Barwick; J. J. Beatty; C. R. Bower; C. J. Chaput; S. Coutu; G. A. De Nolfo; M. A. DuVernois; D. Ellithorpe; D. Ficenec; J. Knapp; D. M. Lowder; S. Mckee; D. Müller; J. A. Musser; S. L. Nutter; E. Schneider; S. P. Swordy; G. Tarlé; A. D. Tomasch; E. Torbet

doi:10.1086/305573

The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation

S. W. Barwick, J. J. Beatty, C. R. Bower, C. J. Chaput, S. Coutu, G. A. De Nolfo, M. A. DuVernois, D. Ellithorpe, D. Ficenec, J. Knapp, D. M. Lowder, S. Mckee, D. Müller, J. A. Musser, S. L. Nutter, E. Schneider, S. P. Swordy, G. Tarlé, A. D. Tomasch, E. Torbet

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Abstract

Observations of cosmic-ray electrons and positrons have been made with a new balloon-borne detector, the High-Energy Antimatter Telescope (HEAT), which was first flown in 1994 May from Fort Sumner, New Mexico. We describe the instrumental approach and the data analysis procedures, and we present results from this flight. The measurement has provided a new determination of the individual energy spectra of electrons and positrons from 5 GeV to about 50 GeV and of the combined "allelectron" intensity (e⁺ + e^-) up to ∼ 100 GeV. The single power-law spectral indices for electrons and positrons are a = 3.09 ± 0.08 and 3.3 ± 0.2, respectively. We find that a contribution from primary sources to the positron intensity in this energy region, if it exists, must be quite small.

Original language	English (US)
Pages (from-to)	779-789
Number of pages	11
Journal	Astrophysical Journal
Volume	498
Issue number	2 PART I
DOIs	https://doi.org/10.1086/305573
State	Published - 1998

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Barwick, S. W., Beatty, J. J., Bower, C. R., Chaput, C. J., Coutu, S., De Nolfo, G. A., DuVernois, M. A., Ellithorpe, D., Ficenec, D., Knapp, J., Lowder, D. M., Mckee, S., Müller, D., Musser, J. A., Nutter, S. L., Schneider, E., Swordy, S. P., Tarlé, G., Tomasch, A. D., & Torbet, E. (1998). The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation. Astrophysical Journal, 498(2 PART I), 779-789. https://doi.org/10.1086/305573

@article{ddd20ea7c0304cdf9bb3d5772e26195a,

title = "The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation",

abstract = "Observations of cosmic-ray electrons and positrons have been made with a new balloon-borne detector, the High-Energy Antimatter Telescope (HEAT), which was first flown in 1994 May from Fort Sumner, New Mexico. We describe the instrumental approach and the data analysis procedures, and we present results from this flight. The measurement has provided a new determination of the individual energy spectra of electrons and positrons from 5 GeV to about 50 GeV and of the combined {"}allelectron{"} intensity (e+ + e-) up to ∼ 100 GeV. The single power-law spectral indices for electrons and positrons are a = 3.09 ± 0.08 and 3.3 ± 0.2, respectively. We find that a contribution from primary sources to the positron intensity in this energy region, if it exists, must be quite small.",

author = "Barwick, {S. W.} and Beatty, {J. J.} and Bower, {C. R.} and Chaput, {C. J.} and S. Coutu and {De Nolfo}, {G. A.} and DuVernois, {M. A.} and D. Ellithorpe and D. Ficenec and J. Knapp and Lowder, {D. M.} and S. Mckee and D. M{\"u}ller and Musser, {J. A.} and Nutter, {S. L.} and E. Schneider and Swordy, {S. P.} and G. Tarl{\'e} and Tomasch, {A. D.} and E. Torbet",

year = "1998",

doi = "10.1086/305573",

language = "English (US)",

volume = "498",

pages = "779--789",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 PART I",

}

Barwick, SW, Beatty, JJ, Bower, CR, Chaput, CJ, Coutu, S, De Nolfo, GA, DuVernois, MA, Ellithorpe, D, Ficenec, D, Knapp, J, Lowder, DM, Mckee, S, Müller, D, Musser, JA, Nutter, SL, Schneider, E, Swordy, SP, Tarlé, G, Tomasch, AD & Torbet, E 1998, 'The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation', Astrophysical Journal, vol. 498, no. 2 PART I, pp. 779-789. https://doi.org/10.1086/305573

TY - JOUR

T1 - The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation

AU - Barwick, S. W.

AU - Beatty, J. J.

AU - Bower, C. R.

AU - Chaput, C. J.

AU - Coutu, S.

AU - De Nolfo, G. A.

AU - DuVernois, M. A.

AU - Ellithorpe, D.

AU - Ficenec, D.

AU - Knapp, J.

AU - Lowder, D. M.

AU - Mckee, S.

AU - Müller, D.

AU - Musser, J. A.

AU - Nutter, S. L.

AU - Schneider, E.

AU - Swordy, S. P.

AU - Tarlé, G.

AU - Tomasch, A. D.

AU - Torbet, E.

PY - 1998

Y1 - 1998

N2 - Observations of cosmic-ray electrons and positrons have been made with a new balloon-borne detector, the High-Energy Antimatter Telescope (HEAT), which was first flown in 1994 May from Fort Sumner, New Mexico. We describe the instrumental approach and the data analysis procedures, and we present results from this flight. The measurement has provided a new determination of the individual energy spectra of electrons and positrons from 5 GeV to about 50 GeV and of the combined "allelectron" intensity (e+ + e-) up to ∼ 100 GeV. The single power-law spectral indices for electrons and positrons are a = 3.09 ± 0.08 and 3.3 ± 0.2, respectively. We find that a contribution from primary sources to the positron intensity in this energy region, if it exists, must be quite small.

AB - Observations of cosmic-ray electrons and positrons have been made with a new balloon-borne detector, the High-Energy Antimatter Telescope (HEAT), which was first flown in 1994 May from Fort Sumner, New Mexico. We describe the instrumental approach and the data analysis procedures, and we present results from this flight. The measurement has provided a new determination of the individual energy spectra of electrons and positrons from 5 GeV to about 50 GeV and of the combined "allelectron" intensity (e+ + e-) up to ∼ 100 GeV. The single power-law spectral indices for electrons and positrons are a = 3.09 ± 0.08 and 3.3 ± 0.2, respectively. We find that a contribution from primary sources to the positron intensity in this energy region, if it exists, must be quite small.

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DO - 10.1086/305573

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AN - SCOPUS:4244108745

SN - 0004-637X

VL - 498

SP - 779

EP - 789

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART I

ER -

The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation

Abstract

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