New optical polarization measurements of the Crab pulsar
arXiv:astro-ph/0511636 · doi:10.1063/1.2141887
Abstract
The Crab nebula and its pulsar have been observed for about 3 hours with the high-speed photo-polarimeter OPTIMA in January 2002 at the Calar Alto 3.5m telescope. The Crab pulsar intensity and polarization are determined at all phases of rotation with higher statistical accuracy than ever. Therefore, we were able to separate the so-called 'off-pulse' phase emission (with an intensity of about 1.2% compared to the main peak, assumed to be present at all phases) from the pulsed emission and show the 'net' polarization of the pulsed structures. Recent theoretical results indicate that the measured optical polarization of the Crab pulsar is similar to expectations from a two-pole caustic emission model or a striped pulsar wind model.
AIP Conference Proceedings "Astrophysical Sources of High Energy Particles and Radiation", eds. T. Bulik et al. (NY:AIP), Volume 801, 2005, pp. 306-311
Cited by in corpus (7)
- High-Altitude Emission from Pulsar Slot Gaps: The Crab Pulsar
- Pulse Profiles, Spectra and Polarization Characteristics of Non-Thermal Emissions from the Crab-Like Pulsars
- Gamma-ray polarization constraints on Planck scale violations of special relativity
- Polarimetry in the hard X-ray domain with INTEGRAL SPI
- A Model for AR~Scorpii: Emission from Relativistic Electrons Trapped by Closed Magnetic Field Lines of Magnetic White Dwarfs
- The Optical Polarisation of the Vela Pulsar revisited
- Lorentz breaking Effective Field Theory and observational tests