20 datasets

ZivaHub2026 · Astronomical catalogue

<p dir="ltr">The GENESIS Black Hole–White Hole Multiverse Hypothesis proposes a model of cosmological reproduction in which gravitational collapse does not terminate at a singularity, but undergoes a black-hole-to-white-hole transition that seeds an expanding daughter universe. The hypothesis combines established and proposed results from general relativity, quantum-gravity black-hole transition m

figshare2026 · Astronomical catalogue

<p dir="ltr">This dataset contains numerical results supporting the manuscript “Template banks for gravitational-wave searches using low-discrepancy sequences.”</p><p dir="ltr">The data include recovery fractions, fitting-factor distributions, template-count statistics, and computational timings for stochastic template-bank construction using uniform random sampling and low-discrepancy sequences.

figshare2026 · Astronomical catalogue

<p dir="ltr">The control programme of the series named orientation reversal — physically inverting the apparatus — as its most decisive test, on the reasoning that mains coupling and circuit response are indifferent to which way up a device is whereas a gravitational term is not. The recorded terminal voltages were being used to build a specific potential Ψ_g, and through it the compactn

IVOA Registry (Virtual Observatory)2025 · Astronomical catalogue

The LIGO/Virgo detected a gravitational wave (GW) event, named GW200224_222234 (also known as S200224ca) and classified as a binary-black hole coalescence, on 2020 February 24. Given its relatively small localization skymap (71deg^2^ for a 90% credible region; revised to 50deg^2^ in GWTC-3), we performed target- of-opportunity observations using the Subaru/Hyper Suprime-Cam (HSC) in the r2 and z b

NASA Data Portal2025 · Astronomical catalogue · unknown

Numerically-generated gravitational waveforms for circular inspiral into Kerr black holes. These waveforms were developed using Scott Hughes' black hole perturbation theory code (the "Teukolsky code").

NASA Data Portal2025 · Astronomical catalogue · unknown

Numerically-generated gravitational waveforms for circular inspiral into Kerr black holes. These waveforms were developed using Scott Hughes' black hole perturbation theory code (the 'Teukolsky code').

NASA Data Portal2025 · Astronomical catalogue · unknown

Numerically-generated gravitational waveforms for binary neutron stars.

NASA Data Portal2025 · Astronomical catalogue · unknown

Gravitational radiation waveforms for black hole-neutron star coalescence calculations. The physical input is Newtonian physics, an ideal gas equation of state with varying compressibility (through the index gamma), and point-mass gravitational radiation back reaction, which is switched off in the simulation once the star is tidally disrupted. All the simulations are 3D, done using SPH.

NASA Data Portal2025 · Astronomical catalogue · unknown

Numerically-generated gravitational waveforms for binary black holes.

IVOA Registry (Virtual Observatory)2024 · Astronomical catalogue

Continuous gravitational waves are nearly monochromatic signals emitted by asymmetries in rotating neutron stars. These signals have not yet been detected. Deep all-sky searches for continuous gravitational waves from isolated neutron stars require significant computational expense. Deep searches for neutron stars in binary systems are even more expensive, but these targets are potentially more pr

IVOA Registry (Virtual Observatory)2023 · Astronomical catalogue

Searches for electromagnetic counterparts of gravitational-wave signals have redoubled since the first detection in 2017 of a binary neutron star merger with a gamma-ray burst, optical/infrared kilonova, and panchromatic afterglow. Yet, one LIGO/Virgo observing run later, there has not yet been a second, secure identification of an electromagnetic counterpart. This is not surprising given that the

IVOA Registry (Virtual Observatory)2023 · Astronomical catalogue

We present the Global Rapid Advanced Network Devoted to the Multi-messenger Addicts (GRANDMA). The network consists of 21 telescopes with both photometric and spectroscopic facilities. They are connected together thanks to a dedicated infrastructure. The network aims at coordinating the observations of large sky position estimates of transient events to enhance their follow-up and reduce the delay

IVOA Registry (Virtual Observatory)2023 · Astronomical catalogue

The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO-Virgo Collaboration (LVC). Both low-energy (7-100MeV) and high-energy (0.1-105GeV) samples were analyzed in order to cover a very wide neutrino spectrum. Follow-ups of 36 (out of 39) gravitational waves reported in the GWTC-2 catalog were examined; no significant exce

IVOA Registry (Virtual Observatory)2023 · Astronomical catalogue

We present optical follow-up observation results of three binary black hole merger (BBH) events, GW190408_181802, GW190412, and GW190503_185404, which were detected by the Advanced LIGO and Virgo gravitational wave (GW) detectors. Electromagnetic (EM) counterparts are generally not expected for BBH merger events. However, some theoretical models suggest that EM counterparts of BBH can possibly ari

IVOA Registry (Virtual Observatory)2022 · Astronomical catalogue

We present the results of a search in LIGO O2 public data for continuous gravitational waves from the neutron star in the low-mass X-ray binary Scorpius X-1. We search for signals with ~constant frequency in the range 40-180Hz. Thanks to the efficiency of our search pipeline we can use a long coherence time and achieve unprecedented sensitivity, significantly improving on existing results. This is

IVOA Registry (Virtual Observatory)2021 · Astronomical catalogue

We present a search for gravitational waves from 221 pulsars with rotation frequencies >~10Hz. We use advanced LIGO data from its first and second observing runs spanning 2015-2017, which provides the highest-sensitivity gravitational-wave data so far obtained. In this search we target emission from both the l=m=2 mass quadrupole mode, with a frequency at twice that of the pulsar's rotation, and t

IVOA Registry (Virtual Observatory)2020 · Astronomical catalogue

The Neil Gehrels Swift Observatory carried out prompt searches for gravitational-wave (GW) events detected by the LIGO/Virgo Collaboration (LVC) during the second observing run ("O2"). Swift performed extensive tiling of eight LVC triggers, two of which had very low false-alarm rates (GW170814 and the epochal GW170817), indicating a high confidence of being astrophysical in origin; the latter was

IVOA Registry (Virtual Observatory)2018 · Astronomical catalogue

We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational-wave emission, GW170817. Our observations commenced 10.5hr post-merger, as soon as the localization region became accessible from Chile. We imaged 70deg^2^ in the i and z bands, covering 93% of the initial integrated localization probability, to a de

IVOA Registry (Virtual Observatory)2018 · Astronomical catalogue

We present an implementation of the Gehrels+ (2016ApJ...820..136G) galaxy-targeted strategy for gravitational-wave (GW) follow-up using the Las Cumbres Observatory global network of telescopes. We use the Galaxy List for the Advanced Detector Era (GLADE) galaxy catalog, which we show is complete (with respect to a Schechter function) out to ~300Mpc for galaxies brighter than the median Schechter f

DANS Data Station Physical and Technical Sciences2005 · Astronomical catalogue · unknown

Data set with the simulated population of double white dwarfs in the galaxy Date Submitted: 2021-06-11