mpi_grav

mpi_grav, 10 days ago to Astro

The gravitational-wave detections continued over the weekend: @LIGO and Virgo observed two new possible signals from merging black hole binaries.

1️⃣ S240601aj is from a (luminosity) distance of 17.5 billion light years: https://gracedb.ligo.org/superevents/S240601aj/view/

2️⃣ S240601co is from a (luminosity) distance of 4.5 billion light years: https://gracedb.ligo.org/superevents/S240601co/view/

Overall, 105 probable signals have been observed in O4 so far.

#GravitationalWaves #Astrodon #O4IsHere #S240601aj #S240601co

Map of the entire sky showing the most likely regions of origin of the gravitational wave of the candidate signal S240601co. The orange spots cover a total area of about 1080 square degrees.

mpi_grav, 16 days ago to Potsdam German

📣 Stellenausschreibung 📣

Wissenschaftsmanagerin & Koordinatorin der Graduiertenschule (International Max Planck Research School, IMPRS) „Gravity at the Extreme: From Theory to Observation“

Der/die IMPRS-Koordinatorin & Wissenschaftsmanagerin arbeitet an der Schnittstelle Wissenschaft/Verwaltung, unterstützt die wissenschaftliche Leitung der IMPRS, koordiniert die laufende Organisation, stimmt mit Partnereinrichtungen ab,…

ℹ️ https://www.aei.mpg.de/1157747/imprs-koordinator-in-und-wissenschaftsmanager-in

#Job #Potsdam #Wissenschaftsmanagement

mpi_grav, 16 days ago to random

💯 ✅

With two new gravitational-wave candidates on May 27, there are now 101 such likely astrophysical events in O4, the fourth observing run of the gravitational-wave detectors @LIGO, Virgo, KAGRA, and GEO600.

The researchers still need to investigate the signal candidates in more detail before characterizing and publishing them in scientific papers.

Fingers crossed that there will be 200 gravitational-wave events at the end of O4 (in February 2025).

#O4IsHere

mpi_grav, 21 days ago to Potsdam German

📣 Job advert 📣

Science Manager and Coordinator of the International Max Planck Research School (IMPRS) “Gravity at the Extreme: From Theory to Observation”

The IMPRS Coordinator and Science Manager will work at the interface between science and administration, supports the scientific leadership team of the IMPRS, coordinates the IMPRS overall, interacts with the partner institutions,…

ℹ️ https://www.aei.mpg.de/1157734/imprs-coordinator-and-science-manager

#Job #Potsdam #ScienceManagement

mpi_grav, 30 days ago to physics German

📣 Postdoc job alert 📣

The “Astrophysical and Cosmological Relativity” department at the @mpi_grav in Potsdam announces the opening of several postdoctoral appointments.

These appointments will be in the area of data analysis and its interface with waveform modeling for the recently adopted space-based gravitational-wave detector LISA.

ℹ️ https://www.aei.mpg.de/1155448/acr-lisa-postdoc

📅 apply by May 21, 2024

#Postdoc #PostdocPosition #Job #Physics #Astrophysics #Potsdam #LISA #LISAMission

mpi_grav, 30 days ago to Potsdam German

📣 Stellen für Postdoktorand*innen 📣

Mehrere Postdoc-Stellen in der Abteilung „Astrophysikalische und kosmologische Relativitätstheorie“ am @mpi_grav in Potsdam: Diese sind in den Bereichen der Datenanalyse und deren Schnittstelle mit der Wellenformmodellierung für den kürzlich beschlossenen weltraumgestützten Gravitationswellendetektor LISA.

ℹ️ https://www.aei.mpg.de/1155467/acr-lisa-postdoc

📅 bewerbt euch bis zum 21. Mai 2024

#Postdoc #PostdocPosition #Job #Physik #Astrophysik #Potsdam #LISA #LISAMission

mpi_grav, 30 days ago to random

Wow! The universe seems quite active right now: The gravitational-wave detectors have observed three possible binary black hole mergers in the past three days.

May 11: S240511i
ℹ️ https://gracedb.ligo.org/superevents/S240511i/view/

May 12: S240512r
ℹ️ https://gracedb.ligo.org/superevents/S240512r/view/

May 13: S240513ei
ℹ️ https://gracedb.ligo.org/superevents/S240513ei/view/

In all three cases, the direction of origin of the gravitational waves could be determined fairly precisely.

#GravitationalWaves #S240511i #S240512r #S240513ei @LIGO

Map of the entire sky, on which the areas in which the gravitational wave candidate S240512r is located are marked in shades of orange. There is a 90% probability that it comes from an area of only 216 square degrees.
Map of the entire sky, on which the areas in which the gravitational wave candidate S240513ei is located are marked in shades of orange. There is a 90% probability that it comes from an area of only 362 square degrees.

mpi_grav, 1 month ago to physics German

📣 Postdoc job alert 📣

The “Astrophysical and Cosmological Relativity” department at the @mpi_grav in Potsdam announces the opening of several postdoctoral appointments.

These appointments will be in the area of data analysis and its interface with waveform modeling for the recently adopted space-based gravitational-wave detector LISA.

ℹ️ https://www.aei.mpg.de/1155448/acr-lisa-postdoc

📅 apply by May 21, 2024

#Postdoc #PostdocPosition #Job #Physics #Astrophysics #Potsdam #LISA #LISAMission

mpi_grav, 1 month ago to random German

New profile picture 🖼️

Neutron stars typically have about 40 % more mass than our Sun with a diameter of only about 20 kilometres. This image shows a neutron star next to Hannover, a site of the @mpi_grav.

Researchers from the permanent independent research group “Continuous Gravitational Waves” use these very waves to search for otherwise invisible neutron stars.

Pic: NASA's Goddard Space Flight Centre

#ProfilePicture #NeutronStar #GravitationalWaves

mpi_grav, 1 month ago to random German

On Sunday, the Universe produced the next merger of two black holes, which Virgo an @LIGO in Livingston and Hanford then observed

❓ ⚫🌀⚫
📏 14.7 ± 4.3 billion light years
🔭 1782 square degrees

ℹ️ https://gracedb.ligo.org/superevents/S240501an/ [GraceDB]

📄 https://gcn.nasa.gov/circulars/36397 [GCN]

mpi_grav, 1 month ago to random German

Anders als wir hatte das Universum gestern keinen freien Tag und hat für @LIGO in Hanford und Livingston und für Virgo eine Verschmelzung zweier Schwarzer Löcher produziert.

❓ ⚫🌀⚫
📏 15.7 ± 4.3 Milliarden Lichtjahre
🔭 1458 Quadratgrad (Sternbild Bildhauer)

ℹ️ https://gracedb.ligo.org/superevents/S240501an/ [GraceDB]

📄 https://gcn.nasa.gov/circulars/36356 [GCN]

#Gravitationswellen #S240501an #SchwarzeLöcher

mpi_grav, 1 month ago to random

Last night there was another candidate for gravitational waves from a merger of a binary black holes.

❓ ⚫🌀⚫
📏 2.5 ± 0.6 billion light years
🔭 286 square degrees (constellation of Cancer)

ℹ️ https://gracedb.ligo.org/superevents/S240428dr/view/ [GraceDB]

📄 https://gcn.nasa.gov/circulars/36340 [GCN]

#GravitationalWaves #S240428dr #BlackHoles

mpi_grav, 1 month ago to space

“Hopes of Big Bang Discoveries Ride on a Future Spacecraft” article in @QuantaMagazine on @LISA and how this ESA mission will be a new probe of primordial processes.

📰 https://www.quantamagazine.org/hopes-of-big-bang-discoveries-ride-on-a-future-spacecraft-20240417/

#GravitationalWaves #ESA #Space #BigBang

mpi_grav, 1 month ago to Astronomy

Join the Search for Pulsars: Help @einsteinathome scientists to identify these amazing cosmic lighthouses!

Join our Zooniverse citizen science project “Einstein@Home: Pulsar Seekers”

➡️ https://www.zooniverse.org/projects/rsengar/einstein-at-home-pulsar-seekers

Also available on the Zooniverse mobile app.

#Zooniverse #CitizenScience #Pulsars #Astronomy

mpi_grav, 1 month ago to Astronomy

On Saturday there was another possible gravitational-wave signal, this time observed by three detectors (both @LIGO instruments and Virgo).

This allowed the sky position to be determined fairly accurately.

It is probably the merger of two black holes or of a neutron star with a black hole at a distance of around 1.7 billion light years.

ℹ️ https://gracedb.ligo.org/superevents/S240413p/view/

#GravitationalWaves #astronomy #O4b

mpi_grav, 2 months ago to random German

Donnerstag dreht sich der Monatsvortrag in der Volkssternwarte Hannover um Einsteins Relativitätstheorie. Den Vortrag über ihre Grundlagen, Vorhersagen und Tests hält @benknispel.

➡️ https://sternwarte-hannover.de/vortraege/

Einlass ist spätestens um 19:30 Uhr, meist früher. Der Vortrag beginnt spätestens um 20:00 Uhr, sollte der Vortragsraum bereits vorher voll sein, auch früher.

Bild: ESO/Landessternwarte Heidelberg-Königstuhl/F. W. Dyson, A. S. Eddington, & C. Davidson

#Relativitätstheorie #Outreach

mpi_grav, 2 months ago to random

When a neutron star meets an unusual black hole: Shortly after the start of the fourth observing run, the @LIGO/Virgo/KAGRA collaborations detected a remarkable gravitational-wave signal.

Our press release from Friday evening (local time) on the first publication from the fourth observing run of the international gravitational-wave detector network.

ℹ️ https://www.aei.mpg.de/1138125/mysterious-object-in-the-gap

#ICYMI #GravitationalWaves #GW230529 #O4

mpi_grav, 2 months ago to random German

🎞️ Aaand action! 🎞️

This visualisation shows the merger of a mass-gap black hole (dark grey) with a neutron star (orange) similar to GW230529 observed by @LIGO. The colours show the neutron stars' increasing density from dark orange to white. The emitted gravitational waves are shown in light blue.

Animation: I. Markin, T. Dietrich, H. Pfeiffer, A. Buonanno / @unipotsdam / @mpi_grav

#GW230529 #GravitationalWaves

video/mp4

mpi_grav, 2 months ago to random German

🚨 Mysterious object in the gap – Shortly after the start of the fourth observing run, the @LIGO-Virgo-KAGRA collaborations detected a remarkable gravitational-wave signal. 😲

It's from the merger of a neutron star with an unknown compact object, most likely an unusually light-weight black hole falling into the “lower mass gap” between the heaviest neutron stars and the lightest black holes.

ℹ️ https://www.aei.mpg.de/1138125/mysterious-object-in-the-gap

#GravitationalWaves #GW230529 #O4

mpi_grav, 2 months ago to random

The @LIGO- and Virgo detectors are preparing for the start of the second half of the fourth observation run (April 10). The first measurement data is already being collected, which looks promising. 👍

This diagram shows (over the last 48 hours) the distance from which they can detect the merger of two neutron stars via gravitational waves. 🌟🌀🌟

#GravitationalWaves #O4 #O4b