TY - JOUR A1 - M. D. Johnson A1 - A. Loeb A1 - H. Shiokawa A1 - A. A. Chael A1 - S. S. Doeleman AU - BT - ApJ DA - 11/2015 DO - 10.1088/0004-637X/813/2/132 LA - eng PY - 2015 EP - 132 T1 - Measuring the Direction and Angular Velocity of a Black Hole Accretion Disk via Lagged Interferometric Covariance T2 - ApJ TI - Measuring the Direction and Angular Velocity of a Black Hole Accretion Disk via Lagged Interferometric Covariance VL - 813 Y1 - 2015 ER -