1. Plotting public LIGO data

I would like to study the gravitational wave strain time-series around the time of an interesting simulated signal during the last science run (S6).

These data are public, so we can load them directly from the web.

The TimeSeries object has a classmethod dedicated to fetching open-access data hosted by the LIGO Open Science Center, so we can just import that object

from gwpy.timeseries import TimeSeries

then call the fetch_open_data method, passing it the prefix for the interferometer we want (‘L1’), and the GPS start and stop times of our query:

data = TimeSeries.fetch_open_data('L1', 968654552, 968654562)

and then we can make a plot:

plot = data.plot(
    title='LIGO Livingston Observatory data for HW100916',
    ylabel='Strain amplitude',
)
plot.show()

(png)