نتایج جستجو برای: very long baseline interferometer and gps

تعداد نتایج: 16960958  

Journal: :Science 2003
Hiroshi Sudou Satoru Iguchi Yasuhiro Murata Yoshiaki Taniguchi

Supermassive black hole binaries may exist in the centers of active galactic nuclei such as quasars and radio galaxies, and mergers between galaxies may result in the formation of supermassive binaries during the course of galactic evolution. Using the very-long-baseline interferometer, we imaged the radio galaxy 3C 66B at radio frequencies and found that the unresolved radio core of 3C 66B sho...

2008
Paul K. Grimes Matthew Brock Christian M. Holler Karl Jacobs Michael E. Jones Oliver G. King Jamie Leech Angela C. Taylor Ghassan Yassin

We describe a novel heterodyne interferometer currently under construction at Oxford. The instrument employs new techniques in heterodyne interferometry, with the aim of achieving very high brightness sensitivity in the millimetre band. It is a single-baseline tracking interferometer for operation in the frequency range 185-275 GHz with two 0.4m offset parabolic antennas separated by a 0.5 m ba...

Journal: :The Astrophysical Journal 2022

Abstract In this work, we study how to infer the orbit of a supermassive black hole binary (SMBHB) by time-dependent measurements with very long baseline interferometry, such as Event Horizon Telescope (EHT). Assuming pointlike luminosity image model, show that multiple years observations EHT, it is possible recover SMBHB orbital parameters—eccentricity, (rescaled) semimajor axis, frequency, an...

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