Today marks the anniversary of #GW170817, our first observation of a binary neutron star, and our first multimessenger source!

https://www.ligo.org/science/Publication-GW170817BNS/index.php

#GravitationalWaves #Astrodon

New account, new #introduction post! Hi, I’m Deanna (they/them) 👋 . I'm a postdoc at the Helsinki Institute of Physics working on #DarkMatter and #GravitationalWaves. I love science #outreach and I’ve been doing #cosmology livestreams - called #CupOfCosmology - since late 2015 (link in bio). I also often talk about my struggles with #MentalHealth in #academia, and my experience as #LGBTQInSTEM and as a (perceived) #WomenInSTEM.
I love meeting new people, so feel free to follow and interact!

A team of #European #astronomers, along with Indian and Japanese colleagues, has reported evidence that strongly suggests the detection of ultra-low-frequency #gravitationalwaves. Such waves, which have not previously been observed, probably originate from pairs of #supermassiveblackholes at the center of #merginggalaxies.

https://phys.org/news/2023-06-clock-like-precision-pulsars-window-gravitational.html

Our universe is rippling with waves caused by massive events, such as merging black holes. Up until yesterday, we didn’t have any evidence of long-wavelength, ‘background’ #GravitationalWaves. But now @nanograv has announced a detection! A network of pulsars measured very carefully has revealed a faint hum in spacetime itself. Though luckily you don’t need pulsars to detect these cookies, a mouth works just fine 😉

#astronomy #astroart #scicomm #science

#Vibrations in the Fabric of #Spacetime - A new milestone in #gravitationalwaves detection has been revealed by #NANOGrav experiment.

https://youtube.com/watch?v=c2EKbvnee3o&feature=share

RT @CosmicRami@twitter.com

How it started ----> How its going

Y'all, remember it was because of THIS QUEEN that we have all of this exciting news today.

Absolute legend. I hope she is very proud today.👑

#IPTAGWB #Pulsars #GravitationalWaves

🐦🔗: https://twitter.com/CosmicRami/status/1674228660939915264

RT @MPIfR_Bonn@twitter.com

Researchers in the European Pulsar Timing Array, together with collaborators around the World, open a new window to the Universe

#PulsarTiming #GravitationalWaves #BlackHole
@EPTAGW@twitter.com @InPTA_GW@twitter.com @mpi_grav@twitter.com

https://www.mpifr-bonn.mpg.de/pressreleases/2023/7

🐦🔗: https://twitter.com/MPIfR_Bonn/status/1674300889731940353

Thread🧵by cosmologist Katie Mack about #NanoGrav news and how pulsar timing array observations can be filtered to find effects of low-frequency #GravitationalWaves. (As opposed to LIGO which measures high-frequency GW.)
[please excuse the bird-site thread link. I can edit the link if @AstroKatie cross-posts the thread via her Mastodon acct]
https://twitter.com/AstroKatie/status/1674207104750460929 #astronomy

#Scientists have found evidence of a universal background of #gravitationalwaves, or ripples in the fabric of #spacetime.

https://www.jpl.nasa.gov/news/15-years-of-radio-data-reveals-evidence-of-spacetime-murmur

"Astrophysicists report solid evidence for a background hum of gravitational waves" by @geekwire / @alanboyle - Discovery: precise timing of pulsar radio signals from across the galaxy indicates effects of low-frequency #GravitationalWaves. https://www.geekwire.com/2023/evidence-hum-gravitational-waves/ #nanograv #astronomy

Ars Technica: NANOGrav hears “hum” of gravitational wave background, louder than expected https://arstechnica.com/?p=1950301 #Tech #arstechnica #IT #Technology #supermassiveblackholes #gravitationalwaves #astrophysics #astronomy #cosmology #NANOGrav #Science #Physics #science #LIGO

"Big Gravitational Wave Announcement Is Coming Thursday" by @ScienceAlert - Coordinated science research announcement scheduled 1pm EDT Thursday, June 29. https://www.sciencealert.com/a-big-gravitational-wave-announcement-is-coming-thursday-heres-why-were-excited #nanograv #gravitationalwaves #astronomy

I’ve used #Astrodon briefly before. I’m returning because #Twitter is now so unsafe for me. I am a #transman, #nonbinary, & #gay former #computational #astrophysicist & #particle physicist

I was in #academia for 15 yrs over 3 MSc’s. Now, I am partly #disabled by #seizures. I work as a #tutor. I aspire to do #datascience

My research was on #blackholes, #gravitationalwaves, #neutrinos, #exoplanets, & #cosmology. I’m hoping to connect to people with similar interests, especially existing friends

Ars Technica: Stars collided in galactic “demolition derby,” produced oddball gamma-ray burst https://arstechnica.com/?p=1949504 #Tech #arstechnica #IT #Technology #multi-messengerastronomy #gravitationalwaves #stellarevolution #Gammaraybursts #astronomy #galaxies #Science #Physics #science

Dying #stars' #cocoons could be new source of #gravitationalwaves

https://phys.org/news/2023-06-dying-stars-cocoons-source-gravitational.html

Right *now*, LIGO Livingston is fully operational and observing, with a binary neutron star range of around 138 Mpc. Come on LIGO Hanford!

You may check the current detector status at https://online.ligo.org #GravitationalWaves

We have prepared a guide for our astronomer partners on the information we release with our candidates

https://emfollow.docs.ligo.org/userguide/

To find out more about alerts, you might enjoy this article from back in O3

https://www.ligo.org/magazine/LIGO-magazine-issue15.pdf#page=6

#O4IsComing #GravitationalWaves

3/3

You can find more information about our candidates from our Gravitational Wave Candidate Event database. We will post information here for all the interesting candidates that we share during #O4.

Today's candidate is https://gracedb.ligo.org/superevents/S230518h/

#O4IsComing #GravitationalWaves

2/3

While we're testing our detectors ahead of #O4 starting next week, we have identified our first interesting candidate #S230518h

If real, the source is most likely a neutron star–black hole binary. Checks of the data quality are underway

Circular: https://gcn.nasa.gov/circulars/33813

#O4IsComing #GravitationalWaves

1/3

#Gravitationalwaves could reveal hidden histories of #blackholes

https://physicsworld.com/a/gravitational-waves-could-reveal-hidden-histories-of-black-holes/