Open AccessCONSTRAINING THE FLARING REGION FOR SAGITTARIUS A* BY 1.3MM VLBI MEASUREMENTS
Author(s) -
Lei Huang,
Zhiqiang Shen,
F. Gao
Publication year - 2013
Publication title -
international journal of modern physics. conference series
Language(s) - English
Resource type - Journals
ISSN - 2010-1945
DOI - 10.1142/s2010194513011112
Subject(s) - very long baseline interferometry , sagittarius a* , shadow (psychology) , physics , astrophysics , sagittarius , astronomy , scale (ratio) , supermassive black hole , geology , stars , galaxy , psychology , milky way , quantum mechanics , psychotherapist
We introduce a simple and useful method to interpret the 2009 data by 1.3mm VLBI, which detected the time-variable emission of Sgr A*. The flaring region can be constrained to scale comparable to black hole shadow size in East-West direction. Constraint in North-South direction is relaxed due to lack of baseline, which can be improved in future observations.