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Journal of Undergraduate Research

Keywords

H2O megamasers, black hole mass, Mark 1210

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

Abstract

We present results from monitoring the spectra of Mrk 1210 with the Green Bank Telescope (GBT) and through the construction of sub-mas resolution maps with the Very Long Baseline Array (VLBA). The purpose of these observations was to determine the accelerations, distances, and angular displacement of the H2O megamasers in the central black hole accretion disk. By modeling these parameters we are better able to understand the dynamics of the megamasers in a potential molecular disk. The VLBI observations show that these masers lie within the inner 0.8 pc of the nucleus. We present possible models for such a system and report a black hole mass of approximately 1.3 × 10^7M⊙. This work was started as an REU project for the NRAO in Charlottesville, VA and continued as a ORCA grant project at Brigham Young University.

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