All-sky search for long-duration gravitational wave transients in the first Advanced LIGO observing run

B. P. Abbott
R. Abbott
T. D. Abbott
M. R. Abernathy
F. Acernese
K. Ackley
C. Adams
T. Adams
P. Addesso
R. X. Adhikari
V. B. Adya
C. Affeldt
M. Agathos
K. Agatsuma
N. Aggarwal
O. D. Aguiar
L. Aiello
A. Ain
P. Ajith
B. Allen
A. Allocca
P. A. Altin
A. Ananyeva
S. B. Anderson
W. G. Anderson

Abstract

We present the results of a search for long-duration gravitational wave transients in the data of the LIGO Hanford and LIGO Livingston second generation detectors between September 2015 and January 2016, with a total observational time of 49 d. The search targets gravitational wave transients of 10-500 s duration in a frequency band of 24-2048 Hz, with minimal assumptions about the signal waveform, polarization, source direction, or time of occurrence. No significant events were observed. As a result we set 90% confidence upper limits on the rate of long-duration gravitational wave transients for different types of gravitational wave signals. We also show that the search is sensitive to sources in the Galaxy emitting at least similar to 10-8 M(circle dot)c(2) in gravitational waves.