Since 1970, magnetic fields have been discovered in well over 200 white dwarfs, ranging from to gauss (0.2 T to 100 kT). Many of the presently known magnetic white dwarfs are identified by low-resolution spectroscopy, which is able to reveal the presence of a magnetic field of 1 megagauss or more. Thus the basic identification process also sometimes results in discovery of magnetic fields. White dwarf magnetic fields may also be measured without spectral lines, using the techniques of broadband circular polarimetry, or maybe through measurement of their frequencies of radio emission via the electron cyclotron maser. It has been estimated that at least 10% of white dwarfs have fields in excess of 1 million gauss (100 T). The magnetic fields in a white dwarf may allow for the existence of a new type of chemical bond, perpendicular paramagnetic bonding, in addition to ionic and covalent bonds, though detecting molecules bonded in this way is expected to be difficult.
since 1970 magnetic fields have? been discovered in well over 200 white dwarfs ranging from to gauss (02 t to 100 kt) many of the presently known magnetic white dwarfs are identified by low-resolution spectroscopy which is able to reveal the presence of a magnetic field of 1 megagauss or more thus the basic identification process also sometimes results in discovery of magnetic fields white dwarf magnetic fields may also be measured without spectral lines using the techniques of broadband circular polarimetry or m.aybe through measurement of t,heir frequencies of radio emission via the electron cyclotron maser it has been estimated that at least 10% of white dwarfs have fields in excess of 1 million gauss (100 t) the magnetic fields in a white dwarf may allow for the existenc!e of a new type of chemical bond perpendicular paramagnetic bonding in addition t:o ionic and covalent bonds though detecting molecules bonded in this way is expected to be difficult