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ASTRA Proceedings An open-access journal for refereed proceedings in extraterrestrial research
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The Sun resides in the so-called Local Bubble, an underdense region, embedded in a dense wall of molecular clouds. This structure is expected to act as an efficient cosmic-ray isotropizer. Using realistic assumptions on the impact of the Local Bubble on cosmic-ray diffusion, we demonstrate that the Local Bubble can dilute the directional information of energetic positrons and electrons in cosmic rays.
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Articles | Volume 2
Articles | Volume 2
ASTRA Proc., 2, 1–3, 2015
https://doi.org/10.5194/ap-2-1-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
ASTRA Proc., 2, 1–3, 2015
https://doi.org/10.5194/ap-2-1-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 2

  31 Jul 2015

31 Jul 2015

The Local Bubble as a cosmic-ray isotropizer

I. Gebauer et al.

Cited articles

Abt, H. A.: The age of the local interstellar bubble, in: American Institute of Physics Conference Series, edited by: Docobo, J. A., Tamazian, V. S., and Balega, Y. Y., American Institute of Physics Conference Series, 1452, 9–17, https://doi.org/10.1063/1.4718582, 2012
Accardo, L., Aguilar, M., Aisa, D., et al.: High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–500 GeV with the Alpha Magnetic Spectrometer on the International Space Station, Phys. Rev. Lett., 113, 121101, https://doi.org/10.1103/PhysRevLett.113.121101, 2014.
Ackermann, M., Ajello, M., Atwood, W. B., et al.: Searches for cosmic-ray electron anisotropies with the Fermi Large Area Telescope, Phys. Rev. D, 82, 092003, https://doi.org/10.1103/PhysRevD.82.092003, 2010.
Adriani, O., Barbarino, G. C., Bazilevskaya, G. A., et al.: Cosmic-Ray Positron Energy Spectrum Measured by PAMELA, Phys. Rev. Lett., 111, 081102, https://doi.org/10.1103/PhysRevLett.111.081102, 2013.
Aguilar, M., Aisa, D., Alvino, A., et al.: Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station, Phys. Rev. Lett., 113, 121102, https://doi.org/10.1103/PhysRevLett.113.121102, 2014.
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Short summary
The Sun resides in the so-called Local Bubble, an underdense region, embedded in a dense wall of molecular clouds. This structure is expected to act as an efficient cosmic-ray isotropizer. Using realistic assumptions on the impact of the Local Bubble on cosmic-ray diffusion, we demonstrate that the Local Bubble can dilute the directional information of energetic positrons and electrons in cosmic rays.
Read more
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ASTRA Proceedings

An open-access journal for refereed proceedings in extraterrestrial research

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