New status from the current 4th joint gravitational-wave observing run (O4):

⌛ Since the start of O4: 89 days

🔢 Number of significant signal candidates: 32

➡️ There is a new signal candidate every 2.8 days.

At the end of the planned O4 runtime (20 months), there could be >200 candidates.

Not all candidates will be confirmed as signals after further analyses. But these should detect more signals not found so far.

#GravitationalWaves #O4

Der vierte Beobachtungslauf (O4) von @LIGO, Virgo und KAGRA läuft seit 76 Tagen und es gibt bereits 28 signifikante Signalkandidaten – alle 2,7 Tage ein neues mögliches Gravitationswellen-Signal.

Alle Kandidaten: https://gracedb.ligo.org/superevents/public/O4/

#Gravitationswellen #O4

Für den Sonntagabend: „Was bringt die Zukunft der Gravitationswellenastronomie?“ #FasziAstroOnline-Vortrag von Ende 2021 von @benknispel:

🎞️ https://www.youtube.com/watch?v=CUkg8spuUSo

#O4 #Gravitationswellen #Astronomie

Want to help in the search for gravitational waves without being a scientist yourself? No problem, just support our citizen science project @einsteinathome.

ℹ️ https://www.einstein-online.info/en/spotlight/eah/
➡️ https://einsteinathome.org/

#O4 #CitizenScience #GravitationalWaves

Ihr wollt bei der Suche nach Gravitationswellen helfen, ohne selbst Wissenschaftler:in zu sein? Gar kein Problem, einfach unser Citizen-Science-Projekt @einsteinathome unterstützen.

ℹ️ https://www.einstein-online.info/spotlight/eah/
➡️ https://einsteinathome.org/

#O4 #CitizenScience #Gravitationswellen

Gravitational waves to look out for in the future: A gravitational-wave background of many, many faint individually unrecognisable signals or from more speculative sources (inflation,…):

ℹ️ https://www.ligo.org/science/Publication-O3StochIso/index.php

#FutureFriday #Waiting4O4 #O4

New selected research highlight: Next generation waveform models for observing run O4 – Five papers about state-of-the-art, computationally efficient inspiral-merger-ringdown gravitational waveforms developed by @mpi_grav Potsdam researchers

➡️ https://www.aei.mpg.de/1034138/new-waveform-models-for-o4

#O4

#ThrowbackThursday to when we saw a signal like none before. What surprises will O4 bring?

📰 https://www.aei.mpg.de/213678/a-signal-like-none-before

#GravitationalWaves #Waiting4O4 #O4

#ThrowbackThursday als wir ein Signal wie keines zuvor entdeckten. Welche Überraschungen wird es in O4 geben?

📰 https://www.aei.mpg.de/364257/a-signal-like-none-before

#GravitationalWaves #Waiting4O4 #O4

Gravitational-wave detectors @LIGO, Virgo, and KAGRA start next observing run to explore the secrets of the Universe. During the last years @mpi_grav and Leibniz University Hannover researchers have prepared for this observing run O4.

➡️ https://aei.mpg.de/1033824/gravitational-wave-detectors-start-next-observing-run-to-explore-the-secrets-of-the-universe

#Waiting4O4 #O4 #O4begins

For our #ExpertsWednesday learn more about the work of the @maxplanckpress independent research group “Binary Merger Observations and Numerical Relativity” @BinaryNr at @mpi_grav Hannover:

➡️ https://www.aei.mpg.de/693972/numerical-visualisations
➡️ https://www.aei.mpg.de/785562/news

#Waiting4O4 #O4

Die Geheimnisse des Universums erforschen: Gravitationswellen-Detektoren @LIGO, Virgo, KAGRA starten ihren nächsten Beobachtungslauf „O4“. In den letzten Jahren haben sich Forschende am @mpi_grav und der Leibniz Universität Hannover auf O4 vorbereitet.

➡️ https://www.aei.mpg.de/1035660/gravitational-wave-detectors-start-next-observing-run-to-explore-the-secrets-of-the-universe

#Waiting4O4 #O4 #O4begins

How does the laser light in @LIGO become the data stream in which the gravitational-wave signals are found? LIGO Magazine, issue 19, to the rescue, explaining the LIGO Controls and Data System (CDS):

ℹ️ https://www.ligo.org/magazine/LIGO-magazine-issue19.pdf#page=36 [pdf]

#Waiting4O4 #O4

What will the future of astronomy with gravitational waves bring? One of the most exciting projects is LISA, a space-based low-frequency gravitational-wave observatory:

🎞️ https://www.youtube.com/watch?v=aTPkoZxyovo

ℹ️ https://www.lisamission.org/

#MultimediaMonday #Waiting4O4 #O4

Was bietet die Zukunft der Astronomie mit Gravitationswellen? Eines der spannendsten Projekte ist LISA, ein weltraumgestütztes Observatorium für tieffrequente Gravitationswellen:

🎞️ https://www.youtube.com/watch?v=aTPkoZxyovo

ℹ️ https://www.lisamission.org/

#MultimediaMonday #Waiting4O4 #O4

Zum Sonntagabend mal was Spannendes? Dann haben wir das Richtige für euch: „Gravitationswellen - ein neues Fenster ins Universum“ im Vortrag von Prof. Dr. Michele Heurs (Leibniz Universität Hannover)

🎞️ https://www.youtube.com/watch?v=tsrtx4LpSXg

#Gravitationswellen #Waiting4O4 #O4

What are continuous gravitational waves, where do they come from, and how do we search for them? The Einstein Online article by @benknispel offers an overview:

📰 https://www.einstein-online.info/en/spotlight/continuousGW/

#SaturdayReading #Waiting4O4 #O4

Was sind kontinuierliche Gravitationswellen, woher kommen sie und wie suchen wir nach Ihnen? Einen ersten Überblick bietet der Einstein-Online-Artikel von @benknispel:

📰 https://www.einstein-online.info/spotlight/kontinuierlicheGW/

#SaturdayReading #Waiting4O4 #O4

Gravitational waves on your smartphone! Keep track of the latest gravitational-wave discovery candidates by @LIGO, Virgo, and KAGRA with the app “Chirp”. It's available for Android and iOS.

📱 http://chirp.sr.bham.ac.uk

#FutureFriday #Waiting4O4 #O4

How can you learn in real-time about new gravitational-wave candidate signals discovered by @LIGO, Virgo, and KAGRA during the fourth observing run O4? One possibility: the “Public Alerts” on the GraceDB webpage:

🚨 https://gracedb.ligo.org

#Waiting4O4 #O4 #FutureFriday