Lmst

Start the week with #GravitationalWave candidate #S250331o

If real, the source is probably a binary black hole

False alarm rate 1 in 100 yr
GraceDB https://gracedb.ligo.org/superevents/S250331o
GCN https://gcn.nasa.gov/circulars/39953
Rating 🐓 ☕ 🌷

#O4IsHere #Astrodon

Initial sky localization. 90% area 27 sq deg.

Initial three-dimensional volume localization. Distance around 580 Mpc.

🚨 A nightly gravitational-wave candidate to start the week ✨

This morning at 1:35 UTC, both @LIGO detectors, together with Virgo, observed a possible new gravitational-wave signal.

If it is real, it came from the merger of two black holes. The luminosity distance is comparatively low at “just” 1.9 billion light-years.

The sky position could be determined – quite accurately – to about 27 square degrees (equivalen to 130 times the area of the full moon in the sky).

ℹ️ https://gracedb.ligo.org/superevents/S250331o/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250331o [related GCN Circulars]

#GravitationalWaves #astronomy #O4IsHere #BlackHoles #S250331o

Map of the entire sky in an elliptical area. Orange areas show the areas of the sky from which the gravitational wave most likely came. Near the right edge a small orange area is visible.

🚨 Nächtlicher Gravitationswellen-Kandidat zum Wochenstart ✨

Heute früh um 1:35 UTC spürten beide Detektoren von @LIGO zusammen mit Virgo ein mögliches Gravitationswellen-Signal auf.

Wenn es es echt ist, stammt es von der Verschmelzung zweier Schwarzer Löcher. Die Leuchtkraft-Entfernung ist mit „nur“ rund 1,9 Milliarden Lichtjahren vergleichsweise gering.

Die Himmelsposition ließ sich auf ca. 27 Quadratgrad (130-mal die Fläche des Vollmonds am Himmel) – und damit recht genau – bestimmen.

ℹ️ https://gracedb.ligo.org/superevents/S250331o/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250331o [zugehörige GCN Circulars]

#Gravitationswellen #Astronomie #O4IsHere #SchwarzeLöcher #S250331o

Karte des gesamten Himmels in einer elliptischen Fläche. Orange Flächen zeigen die Himmelsbereiche, aus denen die Gravitationswelle mit größter Wahrscheinlichkeit kam. Rechts am Rand ist eine winzige orange Fläche erkennbar.

This morning's #GravitationalWave candidate #S250328ae with a great localization

If real, the source is probably a binary black hole

False alarm rate 1 in 100 yr
GraceDB https://gracedb.ligo.org/superevents/S250328ae
GCN https://gcn.nasa.gov/circulars/39898 https://gcn.nasa.gov/circulars/39900
Rating 🍊 🎉 🦢

#Astrodon #O4IsHere

Updates sky localization. 90% area 14 sq deg.

Updated three-dimensional volume localization. Distance around 510 Mpc.

🚨 Friday gravitational-wave candidate 🎉

This morning, both @LIGO instruments, together with Virgo, detected a new possible gravitational-wave signal (no. 202 in the current fourth observation run).

S250328ae – if real – came from the merger of two black holes at a (luminosity) distance of just 1.7 billion light-years. That's comparatively close.

The sky position could be determined very precisely to 14 square degrees (about 67 times the size of the full moon in the sky).

ℹ️ https://gracedb.ligo.org/superevents/S250328ae/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250328ae [related GCN Circulars]

#GravitationalWaves #astronomy #O4IsHere #BlackHoles

Map of the entire sky in an elliptical area. Orange areas show the areas of the sky from which the gravitational wave most likely came. To the upper right of the middle, a very small orange spot is visible.

🚨 Freitäglicher Gravitationswellen-Kandidat 🎉

Heute Morgen haben beide Instrumente von @LIGO zusammen mit Virgo ein neues mögliches Gravitationswellen-Signal aufgespürt (Nr. 202 im aktuellen Beobachtungslauf).

S250328ae kam – wenn es echt ist – von der Verschmelzung zweier Schwarzer Löcher in einer (Leuchtkraft-)Entfernung von gerade einmal 1,7 Milliarden Lichtjahren. Das ist vergleichsweise nah.

Die Himmelsposition konnte auf 14 Quadratgrad (rund 67 Mal die Fläche des Vollmonds am Himmel) sehr genau bestimmt werden.

ℹ️ https://gracedb.ligo.org/superevents/S250328ae/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250328ae [zugehörige GCN Circulars]

#Gravitationswellen #Astronomie #O4IsHere #SchwarzeLöcher

Wednesday #GravitationalWave candidate #S250326y

If real, the source is probably a binary black hole

False alarm rate 1 in 8900 yr
GraceDB https://gracedb.ligo.org/superevents/S250326y/
GCN https://gcn.nasa.gov/circulars/39871
Rating 🦆 🌷 🍫

#Astrodon #O4IsHere

Initial sky localziation. 90% area 1700 sq deg.

Initial three-dimensional volume localization. Distance around 6.2 Gpc.

New gravitational-wave candidate

Both @LIGO instruments, together with Virgo, have detected the 201st possible gravitational-wave signal in their current (fourth) joint observation run, O4.

S250326y came – if it is real – from the merger of two black holes at a luminosity distance of around 20 billion light-years.

ℹ️ https://gracedb.ligo.org/superevents/S250326y/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250326y [related GCN Circulars]

#GravitationalWaves #astronomy #O4IsHere #BlackHoles #S250326y

Map of the entire sky in an elliptical area. Orange areas show the areas of the sky from which the gravitational wave most likely came. At the bottom left and the top right of the map two orange areas are visible.

Neuer Gravitationswellen-Kandidat

Beide Instrumente von @LIGO haben zusammen mit Virgo das 201. mögliche Gravitationswellen-Signal im aktuellen vierten gemeinsamen Beobachtungslauf aufgespürt.

S250326y kam – wenn es echt ist – von der Verschmelzung zweier Schwarzer Löcher in einer Leuchtkraftentfernung von rund 20 Milliarden Lichtjahren.

ℹ️ https://gracedb.ligo.org/superevents/S250326y/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250326y [zugehörige GCN Circulars]

#Gravitationswellen #Astronomie #O4IsHere #SchwarzeLöcher #S250326y

Neue Entdeckungen in Sicht – Gravitationswellen-Observatorien haben bereits 200 Signalkandidaten beobachtet.

Wissenschaftler*innen am @mpi_grav und an der @unihannover, darunter auch viele Doktorand*innen und Postdoktorand*innen, haben zu diesem Erfolg beigetragen.

https://www.aei.mpg.de/1240339/new-discoveries-on-the-horizon

#Gravitationswellen #O4 #O4IsHere #Astronomie

New discoveries on the horizon - gravitational-wave observatories have already observed 200 detection candidates.

Scientists at the @mpi_grav and at @unihannover, including many PhD students and postdoctoral researchers, have contributed to this achievement.

https://www.aei.mpg.de/1237306/new-discoveries-on-the-horizon

#GravitationalWaves #O4 #O4IsHere #astronomy

During our observing run, new candidates are immediately reported to astronomers worldwide via NASA's GCN Circulars

Prior to O4, we had discovered 90 probable #GravitationalWave candidates. O4 is a big advancement!

O4 is planned to continue until 7 October 2025 (https://observing.docs.ligo.org/plan/). We hope for many more #GravitationalWave discoveries to come

#O4IsHere #Astrodon

Cumulative number of detections. For O1, O2 and O3, we have published 90 probable candidates. During O4, we have so far shared 200 significant candidates

🎉 We have reached 200 #GravitationalWave candidates in O4! 🎉

The fourth observing run (O4) of our detector network has had the best performance so far, with more candidates than ever before! We are currently busy analysing all these wonderful data and look forward to sharing results

#O4IsHere #Astrodon

The international network of the gravitational-wave detectors has found a new gravitational-wave candidate.

S250319bu, if real, came from the merger of two black holes at a (luminosity) distance of 14.3 billion light-years.

With data from both @LIGO and Virgo detectors, the sky position could be determined to within about 2000 square degrees.

ℹ️ https://gracedb.ligo.org/superevents/S250319bu/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250319bu [related GCN Circulars]

#GravitationalWaves #astronomy #O4IsHere #BlackHoles

Map of the entire sky in an elliptical area. Orange areas show the areas of the sky from which the gravitational wave most likely came. To the right of the center and near the right edge, two large orange spots are visible.

Das internationale Netzwerk der Gravitationswellen-Detektoren hat einen neuen Gravitationswellen-Kandidaten aufgespürt.

S250319bu kam, wenn er echt ist, von der Verschmelzung zweier Schwarzer Löcher in einer (Leuchtkraft-)Entfernung von 14,3 Milliarden Lichtjahren.

Mit den Daten beider Detektoren von @LIGO und von Virgo ließ sich die mögliche Himmelsposition auf rund 2000 Quadratgrad genau bestimmen.

ℹ️ https://gracedb.ligo.org/superevents/S250319bu/view/ [GraceDB]
ℹ️ https://gcn.nasa.gov/circulars?query=S250319bu [zugehörige GCN Circulars]

#Gravitationswellen #Astronomie #O4IsHere #SchwarzeLöcher

Fresh #GravitationalWave candidate #S250319bu

If real, the source is probably a binary black hole

False alarm rate 1 in 67 yr
GraceDB https://gracedb.ligo.org/superevents/S250319bu/
GCN https://gcn.nasa.gov/circulars/39776
Rating ⏱️🦆

#O4IsHere #Astrodon

Initial sky localization. 90% area 2,100 sq deg.

Initial three-dimensional volume localizaiton. Distance around 4.4 Gpc

Yesterday, we completely forgot to tell you about the latest gravitational-wave candidate. Let's remedy that right now!

Both @LIGO detectors and Virgo detected the possible signal S250304cb at (our) breakfast time on 4 March.

If it is real, it came from a merger of two black holes at a (luminosity) distance of around 5.8 billion light-years.

ℹ️ https://gracedb.ligo.org/superevents/S250304cb/view/ [GraceDB]

ℹ️ https://gcn.nasa.gov/circulars?query=S250304cb [related GCN Circulars]

Edit: added links

#GravitationalWaves #astronomy #astrophysics #BlackHoles #O4IsHere #S250304cb

Map of the entire sky in an elliptical area. Orange areas show the areas of the sky from which the gravitational wave most likely came. A roughly annular orange area is visible to the left of the center of the map.

Da haben wir gestern doch ganz vergessen, euch den neuesten Gravitationswellen-Kandidaten mitzuteilen. Das wollen wir dann mal ganz zügig nachholen!

Beide Detektoren von @LIGO haben zur am 4.3. zu unserer Frühstückszeit gemeinsam mit Virgo das mögliche Signal S250304cb aufgespürt.

Wenn es echt ist, kam es von der Verschmelzung zweier Schwarzer Löcher in einer (Leuchtkraft-)Entfernung von rund 5,8 Milliarden Lichtjahren.

ℹ️ https://gracedb.ligo.org/superevents/S250304cb/view/ [GraceDB]

ℹ️ https://gcn.nasa.gov/circulars?query=S250304cb [zugehörige GCN Circulars]

Edit: Links ergänzt

#Gravitationswellen #Astronomie #Astrophysik #SchwarzeLöcher #O4IsHere #S250304cb

Don't give up #GravitationalWaves for Lent, here's candidate #S250304cb

If real, the source is probably a binary black hole

False alarm rate 1 in 0.56 yr
GraceDB https://gracedb.ligo.org/superevents/S250304cb
GCN https://gcn.nasa.gov/circulars/39582
Rating 🐸

#O4IsHere #Astrodon

Initial sky localization. 90% area 1,600 sq deg.

Initial three-dimensional volume localization. Distance around 1.8 Gpc.

Last night, the @LIGO and Virgo detectors observed two new possible gravitational-wave signals.

If further analysis confirms them as real, both most likely came from binary black hole mergers.

S250226dl came from a (luminosity) distance of 11.7 billion light-years. Data from both @LIGO detectors were used: https://gracedb.ligo.org/superevents/S250226dl/view/ and https://gcn.nasa.gov/circulars?query=S250226dl

S250227e comes from a (luminosity) distance of 6.8 billion light-years. Both the @LIGO and Virgo detectors have contributed data: https://gracedb.ligo.org/superevents/S250227e/view/ and https://gcn.nasa.gov/circulars?query=S250227e

This brings the total number of all signal candidates in the fourth joint observation run O4 to 198: https://gracedb.ligo.org/superevents/public/O4/

#GravitationalWaves #astronomy #BlackHoles #O4IsHere #S250226dl #S250227e

#O4IsHere

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