Results 91 to 100 of about 4,978 (186)

The Peculiar Velocity of Messier 87 from Microarcsecond Geodetic Very Long Baseline Interferometry Astrometry

open access: yesThe Astrophysical Journal
Our knowledge of the space velocity of Messier 87, which is the dominant galaxy in the Virgo cluster, has been limited to the radial velocity component.
Valeri V. Makarov   +2 more
doaj   +1 more source

Prospects of Detecting a Jet in Sagittarius A* with Very-long-baseline Interferometry

open access: yesThe Astrophysical Journal
Event Horizon Telescope (EHT) images of the horizon-scale emission around the Galactic center supermassive black hole Sagittarius A* (Sgr A*) favor accretion flow models with a jet component. However, this jet has not been conclusively detected.
Erandi Chavez   +5 more
doaj   +1 more source

Evolution of the Termination Region of the Parsec-scale Jet of 3C 84 Over the Past 20 yr

open access: yesThe Astrophysical Journal
We present the kinematics of the parsec-scale jet in 3C 84 from 2003 November to 2022 June observed with the Very Long Baseline Array at 43 GHz. We find that the C3 component, a bright feature at the termination region of the jet component ejected from ...
Minchul Kam   +6 more
doaj   +1 more source

VLBA Astrometry of the Galactic Double Neutron Stars PSR J0509+3801 and PSR J1930–1852: A Preliminary Transverse Velocity Distribution of Double Neutron Stars and its Implications

open access: yesThe Astrophysical Journal
The mergers of double neutron star (DNS) systems are believed to drive the majority of short γ -ray bursts (SGRBs), while also serving as production sites of heavy r -process elements.
Hao Ding   +5 more
doaj   +1 more source

An Angular Diameter Measurement of β UMa via Stellar Intensity Interferometry with the VERITAS Observatory

open access: yesThe Astrophysical Journal
We use the Very Energetic Radiation Imaging telescope Array System (VERITAS) imaging air Cherenkov telescope array to obtain the first measured angular diameter of β UMa at visual wavelengths using stellar intensity interferometry (SII) and independently
A. Acharyya   +47 more
doaj   +1 more source

A prototype differential atom interferometer for fundamental physics. [PDF]

open access: yesNature
Baynham CFA   +92 more
europepmc   +1 more source

Entanglement-assisted non-local optical interferometry in a quantum network. [PDF]

open access: yesNature
Stas PJ   +15 more
europepmc   +1 more source

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