Models for Optical and Infrared Polarization from CW1103+254

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Photonic Crystal-Based Polarization Converter for Optical Communication Applications

A photonic crystal-based TE to TM polarization converter for integrated optical communication is proposed in this paper. The photonic crystal consists of air circular-holes in slab waveguide. The radius of holes are determined to be 291nm having lattice constant of 640nm using the gap map and band diagram. The polarization converter is composed of an InGaAsP triangular-shaped waveguide on SiO2 ...

متن کامل

Polarization of Gamma–Ray Burst Optical and Near-Infrared Afterglows

Gamma–Ray Burst afterglow polarization measurements, in spite of their intrinsic difficulties, have been carried out for a number of events that begins to be adequate to draw some general statistical conclusions. Although the presence of some degree of intrinsic polarization seems to be well established, there are still open problems regarding the polarization time evolution and the possible co...

متن کامل

The Optical Polarization of Near-infrared Selected Qsos

Optical broad-band polarimetry is presented for near-infrared color-selected active galactic nuclei (AGN) classified as quasi-stellar objects (QSOs) based on their Ks-band luminosity. More than 10% of a sample of 70 QSOs discovered in the Two Micron All Sky Survey (2MASS) with J −Ks > 2 and MKs < −23 show high broad-band linear polarization (P > 3%), and values range to a maximum of P ∼ 11%. Hi...

متن کامل

Refractive Dual Band Infrared Imager Optical Design

Infrared imagers are important for reorganization and monitoring. This paper discusses the design of an infrared imager. Optical design in medium wavelength infrared (MWIR) and long wavelength infrared (LWIR) bands is different and needs distinct detectors and materials. Reflective systems are not suitable due to their small field of view (FOV) and vignetting. Refractive dual band optical syste...

متن کامل

Dust and Infrared Polarization Signatures

An outline is presented of observations and interpretations of polarization in the near and mid-infrared. Grain alignment occurs in the diffuse interstellar medium, in dense and massive molecular clouds and in HII regions as well as the boundaries of diffuse quiescent clouds; the resulting polarization displays features due to thermal excitation of molecular bonds and these are discussed in ter...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: International Astronomical Union Colloquium

سال: 1987

ISSN: 0252-9211

DOI: 10.1017/s0252921100105482