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The system AM Her = 4U 1814 + 50

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Abstract

The binary system AM Herculis = 4U 1814 + 50 gives the first well ascertained example of an X-ray emitting magnetic white dwarf. The orbital period (3.1h) is apparent from X-ray to IR frequencies and in linear and circular polarization. Since the time of the identification of the X-ray source the system has been extensively studied. The observations (which range from 1 MeV to 20 μm) are reviewed and compared with the present theory of X-ray emitting white dwarfs.

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Author notes

  1. Lucio Chiappetti

    Present address: Mullard Space Science Laboratory, Holmbury St. Mary, Surrey, UK

Authors and Affiliations

  1. Istituto di Fisica dell'Università, Italy

    Lucio Chiappetti, Enrico G. Tanzi & Aldo Treves

  2. Laboratorio di Fisica Cosmica del CNR, Milano, Italy

    Lucio Chiappetti, Enrico G. Tanzi & Aldo Treves

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  1. Lucio Chiappetti
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  2. Enrico G. Tanzi
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Chiappetti, L., Tanzi, E.G. & Treves, A. The system AM Her = 4U 1814 + 50. Space Sci Rev 27, 3–33 (1980). https://doi.org/10.1007/BF00168043

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