Mathematical SETI pp 361-375

Part of the Springer Praxis Books book series (PRAXIS)

Belt of focal spheres between 550 and 17,000 AU

Chapter

Abstract

The gravitational lens of the Sun has a drawback: the solar corona. This is discussed at length in Chapter 8 of [19] and exemplified by Figure 14.1. Electrons in the corona make electromagnetic waves “diverge” and this “pushes the focus out” to distances greater than 550 AU. For instance, at the CMB peak frequency of 160 GHz, the true focus lies at 763 AU. Thus, it would be safer to position the FOCAL spacecraft at 1,000 AU.

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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.International Academy of Astronautics and Istituto Nazionale di AstrofisicaTorino (Turin)Italy

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