Open AccessEvaluating and Enhancing Candidate Clocking Systems for CHIME/FRB VLBI Outriggers
Author(s) -
Savannah Cary,
Juan Mena-Parra,
Calvin Leung,
Kiyoshi Masui,
Jane Kaczmarek,
Tomas Cassanelli,
Chime
Publication year - 2021
Publication title -
research notes of the aas
Language(s) - English
Resource type - Journals
ISSN - 2515-5172
DOI - 10.3847/2515-5172/ac289d
Subject(s) - very long baseline interferometry , outrigger , hydrogen maser , maser , computer science , physics , interferometry , astronomy , geodesy , remote sensing , geology , oceanography
As the Canadian Hydrogen Intensity Mapping Experiment (CHIME) has become the leading instrument for detecting Fast Radio Bursts (FRBs), CHIME/FRB Outriggers will use very-long-baseline interferometry (VLBI) to localize FRBs with milliarcsecond precision. The CHIME site uses a passive hydrogen maser frequency standard in order to minimize localization errors due to clock delay. However, not all outrigger stations will have access to a maser. This report presents techniques used to evaluate clocks for use at outrigger sites without a maser. More importantly, the resulting algorithm provides calibration methods for clocks that do not initially meet the stability requirements for VLBI, thus allowing CHIME/FRB Outriggers to remain true to the goal of having milliarcsecond precision.