The Cosmologists Who Faked It - Issue 42: Fakes

At 2:40 a.m., my phone woke me up. At least one of us was always on shift, and that night in September of 2010, I had volunteered to respond to automated text messages from our alert system. As a graduate student at the time, I (Jonah) had helped build the first quick-response alert software pipeline for two gravitational-wave observatories, called LIGO (Laser Interferometer Gravitational-wave Observatory) and Virgo. This system was designed to search for astrophysical signals in data as it arrived, to alert people who could check if a signal seemed valid, and share the message with astronomers around the world if needed. Every alert carried the possibility of a positive detection--humanity's first direct observation of waves traveling through the fabric of spacetime, predicted by Einstein in 1916. I got out of bed and made a sleepy-eyed walk to the small workstation we kept in our apartment. I didn't know it, but the alert was the beginning of a professional and emotional rollercoaster. I logged into our event database and started browsing plots. The plots showed an unusually loud signal.