On the magnetic field in the white dwarf GRW + 70.8247 deg

Details On the magnetic field in the white dwarf GRW + 70.8247 deg On the magnetic field in the white dwarf GRW + 70.8247 deg

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282l..97h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 282, July 15, 1984, p. L97, L98.

Other

32

Stellar Magnetic Fields, Stellar Spectra, White Dwarf Stars, Field Strength, H Lines, Lyman Alpha Radiation, Ultraviolet Spectra

Scientific paper

Greenstein has observed a sharp absorption feature near 1345 Å in the ultraviolet spectrum of the white dwarf Grw +70°8247. He interprets this as a component of hydrogen Lyα in a strong magnetic field, which he estimates to be in the region of 3.5×108 gauss. Using a very accurate multiparameter variational approach the authors deduce that the maximum Lyα wavelength obtainable is 1342.6 Å (or slightly greater if one includes a gravitational redshift as well as a Stark-induced redshift), at which wavelength the magnetic field is 5.6×108 gauss, all other magnetic field values giving rise to smaller wavelengths.

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