Galactic cosmic ray hazard in the unusual extended solar minimum between solar cycle 23 and 24

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Schwadron, N. A. ; Boyd, A. J. ; Kozarev, K. ; Golightly, M. ; Spence, H. ; Townsend, L. W. ; Owens, Mathew (2010)
  • Related identifiers: doi: 10.1029/2010SW000567
  • Subject:
    arxiv: Astrophysics::Earth and Planetary Astrophysics | Physics::Space Physics

Galactic cosmic rays (GCRs) are extremely difficult to shield against and pose one of the most severe long-term hazards for human exploration of space. The recent solar minimum between solar cycles 23 and 24 shows a prolonged period of reduced solar activity and low interplanetary magnetic field strengths. As a result, the modulation of GCRs is very weak, and the fluxes of GCRs are near their highest levels in the last 25 years in the fall of 2009. Here we explore the dose rates of GCRs in the current prolonged solar minimum and make predictions for the Lunar Reconnaissance Orbiter (LRO) Cosmic Ray Telescope for the Effects of Radiation (CRaTER), which is now measuring GCRs in the lunar environment. Our results confirm the weak modulation of GCRs leading to the largest dose rates seen in the last 25 years over a prolonged period of little solar activity.
  • References (44)
    44 references, page 1 of 5

    Badhwar, G. D., and P. M. O'Neill (1991), An improved model of galactic cosmic radiation for space exploration missions, Proc. Int. Conf. Cosmic Rays 22nd, 1, 643-646.

    Badhwar, G. D., and P. M. O'Neill (1992), An improved model of galactic cosmic radiation for space exploration missions, Nucl. Tracks Radiat. Meas., 20, 403-410, doi:10.1016/1359-0189(92)90024-P.

    Badhwar, G. D., and P. M. O'Neill (1993), Time lag of twenty‐two year solar modulation, Proc. Int. Conf. Cosmic Rays 23rd, 3, 535-539.

    Badhwar, G. D., and P. M. O'Neill (1994), Long term modulation of galactic cosmic radiation and its model for space exploration, Adv. Space Res., 14, 749-757, doi:10.1016/0273-1177(94)90537-1.

    Badhwar, G. D., and P. M. O'Neill (1996), Galactic cosmic radiation model and its applications, Adv. Space Res., 17, 7-17, doi:10.1016/ 0273-1177(95)00507-B.

    Beer, J., et al. (1990), Use of 10Be in polar ice to trace the 11‐year cycle of solar activity, Nature, 347, 164-166, doi:10.1038/347164a0.

    Cini Castagnoli, G., et al. (1995), Evidence for enhanced 10Be deposition in Mediterranean sediments 35 kyr BP, Geophys. Res. Lett., 22, 707-710, doi:10.1029/95GL00298.

    Cini Castagnoli, G., G. Bonino, C. Taricco, and B. Lehman (1998), Cosmogenic isotopes and geomagnetic signals in a Mediterranean sea sediment at 35,000 y BP, Nuovo Cimento C, 21, 243-246.

    Cucinotta, F. A., F. K. Manuel, J. Jones, G. Izsard, J. Murray, B. Djojonegro, and M. Wear (2001a), Space radiation and cataracts in astronauts, Radiat. Res., 156, 460-466, doi:10.1667/0033-7587(2001) 156[0460:SRACIA]2.0.CO;2.

    Cucinotta, F. A., W. Schimmerling, J. W. Wilson, L. E. Peterson, G. D. Badhwar, P. Saganti, and J. F. Dicello (2001b), Space radiation cancer risks and uncertainties for Mars missions, Radiat. Res., 156, 682-688, doi:10.1667/0033-7587(2001)156[0682:SRCRAU]2.0.CO;2.

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