منابع مشابه
Miras around the Galactic Center
We report results of our near-IR survey for variables in a field of view of 20′ by 30′ towards the Galactic Center (GC), where we detected 1364 long-period variables. We have established a method for the simultaneous estimation of distances and extinctions using the period-luminosity relations for the JHKs bands. Our method is applicable to Miras with periods in the range 100–350 days and mean ...
متن کاملStudies of Three-Body B^+→D ̅^* 〖(2007)〗^0 K^+ K ̅^0 and B^0→D^* 〖(2010)〗^- K^+ K ̅^0 Decays
We analyze three-body decays of and . Under the factorization approach, there are tree level diagrams for these decay modes and the transition matrix element of decay is factorized into a form factor multiplied by decay constant and form factor multiplied into weak vertices form factor. The transition matrix element of decay is also factorized into a form factor multiplied into weak vertic...
متن کاملMHD jets around galactic objects
Abstract. We present a self-similar, steady-state model describing both a magnetized accretion disc and a magnetohydrodynamic jet. We focus on the role of a hot corona in such a structure. This corona enables the disc to launch various types of jets. By considering the energy conservation, we also present a diagnostic of the luminosity of the magnetized disc, which could explain some observatio...
متن کاملMulti - frequency polarimetry of the Galactic radio background around 350 MHz : I . A region in Auriga around l = 161 ◦ , b = 16 ◦
With the Westerbork Synthesis Radio Telescope (WSRT), multi-frequency polarimetric images were taken of the diffuse radio synchrotron background in a ∼ 5◦×7◦ region centered on (l, b) = (161◦, 16◦) in the constellation of Auriga. The observations were done simultaneously in 5 frequency bands, from 341 MHz to 375 MHz, and have a resolution of ∼ 5.0′×5.0′ cosec δ. The polarized intensity P and po...
متن کاملMulti - frequency polarimetry of the Galactic radio background around 350 MHz : II . A region in Horologium around l = 137 ◦ , b = 7 ◦
We study a conspicuous ring-like structure with a radius of about 1.4 which was observed with the Westerbork Synthesis Radio Telescope (WSRT) at 5 frequencies around 350 MHz. This ring is very prominent in Stokes Q and U , and less so in polarized intensity P . No corresponding structure is visible in total intensity Stokes I , which indicates that the ring is created by Faraday rotation and de...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1978
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/182.1.1