LIGO Hanford for the Public[fb]


[121411] What do you want to know about LIGO? LIGO Hanford's list of Frequently Asked Questions (FAQ) now resides on our Web site. Surf our FAQ for responses to often-asked questions that cover various aspects of LIGO detector operations, data analysis, astronomy/astrophysics and working life at the Observatory. LIGO Hanford thanks students from Liberty High School and Sammamish High School for sending in the questions that started the LHO FAQ!
Follow the installation of Advanced LIGO   at LIGO Hanford by surfing our photo and video Galleries. Check the galleries periodically to find recent news on Advanced LIGO activities at LHO. Then come see the real thing on a LIGO tour![081811_6]
[issue_3] LIGO Magazine, Issue Three    Read issue three (left) to learn of the challenges and successes of a multi-continent multi-decade research effort in squeezed light. LIGO Magazine comes to you from the international LIGO Scientific Collaboration and delivers twice-yearly news of the worldwide effort to detect gravitational waves along with interesting features from related areas of astrophysics. [issue_2]

LIGO Hanford Feels East Coast Earthquake on 8/23/2011
The plots below show the arrival of earthquake waves from the August 23 Virginia earthquake at LIGO Hanford. LIGO's seismometer network at the Livingston observatory was out of service at the time of the quake due to Advanced LIGO activities. These types of seismic disturbances are commonly felt at the LIGO facilities, although in Hanford's case the nearby sources are more likely to lie near Alaska and along the west coast than in Virginia! These plots were constructed with the LIGO e-Lab Web interface, part of the I2U2 Collaboration. The upper plot shows root mean square values of the raw data, hence the values are positive. The lower plot shows data that were averaged over short time intervals, yielding the classic seismogram-type oscillation about the horizontal axis. The quake occurred near 17:51 UTC on August 23, meaning that the group of seismic waves that delivered the greatest energy to Hanford needed 15 minutes of travel time. The surface distance from the epicenter to LIGO Hanford is roughly 3500 km.
Click on the plots for an enlarged view.
[VA quake]
[VA quake]

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