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#GW190814 — The mystery of a 2.6 solar mass compact object? cplberry.com/2020/06/23/gw1…
#GW190814's masses are unlike anything we've seen before. The lower mass object could be a unexpectedly massive neutron star (making it our 1st neutron star–black hole), or it could be the smallest black hole ever found!

📊: media.ligo.northwestern.edu/gallery/mass-p… Masses in the stellar graveyard
#GW190814 was detected 14 August 2019 (on the second birthday of GW170814 🎁). It was sent out as candidate #S190814bv. After lots of careful analysis, I'm excited to share our results (it's more interesting than I initially suspected)
Discover more about our latest @LIGO & @ego_virgo discovery #GW190814 from the official science summary
The #GW190814 paper is available to read from the Astrophysical Journal Letters #OpenAccess doi.org/10.3847/2041-8… (it should be hitting the arXiv soon too)
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Christopher Berry
@cplberry
Getting ready to watch my first #APSApril session on the latest @ego_virgo & @LIGO results! 🍿
Chad Hanna is reviewing our third observing run. Look at the performance of @ego_virgo, @LIGOWA & @LIGOLA. Phenomenal sensitivity and amount of observing time: at least one detector observing for >96% of the time! O3a: No interferometer observing 3.2% of the time<br /> O3b: No interferometer observing 3.4% of the time
Hanna reviews our first detection of O3, a massive binary neutron star system #GW190425 arxiv.org/abs/2001.01761 The mass of GW190425 is larger than any binary neutron star seen in our Galaxy
Read 22 tweets
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Christopher Berry
@cplberry
New gravitational-wave candidate?
gracedb.ligo.org/superevents/S2…
#S20014 was found by an unmodelled burst search, I'm always skeptical of these, as they are easily confused with glitches
False alarm rate: 1 per 25 yr
Rating: 🧙‍♂️😐 Initial sky localization. 90% area 400 sq deg
#S20014 looks to be low frequency, it's central frequency is around 65 Hz
gcn.gsfc.nasa.gov/notices_l/S200…
Extremely heavy black hole mergers could be in this range. These signals are short. They can be found by burst searches and missed by template searches (there's not much to match)
There are also short, low-frequency glitches. Here are examples of Blip and Tomte glitches from @GravitySpyZoo. This glitches are hard to identify, as we don't have a good auxiliary monitor to identify them A Blip glitch from Gravity SpyA Tomte glitch from Gravity Spy.
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