Search for Non-Thermal Emission from Isolated Magnetized White Dwarfs
Abstract
In order to search for possible non-thermal emission like AE Aquarii, we picked up magnetized isolated white dwarfs (WDs) in addition to binaries including magnetized cataclysmic variables. Recently, many magnetized WDs are found by Sloan Digital Sky Survey project reaching 9000 objects including WDs showing a magnetic field strength of B ~ 109 G. 82 objects were selected with known magnetic field strength and spin periods in terms of magnetic dipole momentum. The most promising object is EUVE J0317-855, which locates above death line of pulsars and has magnetic dipole radiation Erad ~ 1.1 × 1029 erg/s. Then, we researched for non-thermal emission from isolated magnetized WDs with INTEGRAL, MAXI and Suzaku. As a result, no significant emissions were detected from isolated magnetized WDs with these instruments sensitivities.
- Publication:
-
Thirteenth Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories
- Pub Date:
- January 2015
- DOI:
- 10.1142/9789814623995_0465
- Bibcode:
- 2015mgm..conf.2447H