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|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.|
|LIGO Public Tours Offered Twice Monthly|
LIGO Hanford welcomes drop-in visitors for two-hour Observatory tours on the second Saturday of each month at 1:30 PM and on the fourth Friday of each month at 3:00 PM. Groups of 15 or larger can schedule a private tour. Tours are free.
|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!|
|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.|
Volunteer to become part of LIGO's public outreach team. Both long-term and short-term volunteer opportunities are available. Inquire at outreach(at)ligo-wa.caltech.edu, at 509-372-8248.
Explore LIGO . . .
|Try LIGO's book recommendations.|
Contact LIGO via 509-372-8106, 509-372-8248 or outreach(at)ligo-wa.caltech.edu to request a speaker for your organization, schedule a LIGO tour or field trip, request our periodic e-newsletter, sign up to be a LIGO volunteer, or query us on gravitational-wave astronomy.
Last modified Nov 14, 2013
Black hole image credit: NASA/CXC/SAO
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LIGO is supported by the National Science Foundation. Any opinions, findings, conclusions or recommendations expressed here are those of the author(s) and do not necessarily reflect the views of the National Science Foundation