Results 21 to 30 of about 1,806 (190)
Characterizing Pulsars Detected in the Rapid ASKAP Continuum Survey
The Astrophysical Journal, 2023 We present the detection of 661 known pulsars observed with the Australian SKA Pathfinder (ASKAP) telescope at 888 MHz as part of the Rapid ASKAP Continuum Survey (RACS).
Akash Anumarlapudi +18 more
doaj +1 more source
Inherent and Local Magnetic Field Structures in Jets from Active Galactic Nuclei
Galaxies, 2021 In theoretical models for the electromagnetic launching of astrophysical jets, a helical magnetic (B)-field component is generated through the winding up of an initial longitudinal field component by the rotation of the cental black hole and accretion ...
Denise C. Gabuzda
doaj +1 more source
Efficient wide-field radio interferometry response [PDF]
Astronomy & Astrophysics, 2021 Radio interferometers do not measure the sky brightness distribution directly, but measure a modified Fourier transform of it. Imaging algorithms therefore need a computational representation of the linear measurement operator and its adjoint, regardless of the specific chosen imaging algorithm.
Philipp Arras +3 more
openaire +3 more sources
Galaxies, 2021 I offer a brief and personal history of the development of polarization sensitive observations with widely separated antennas. The story starts at Jodrell Bank in the late 1960s with a 24 km baseline radio linked (but not phase stable) interferometer and
John Wardle
doaj +1 more source
Atom radio-frequency interferometry
, 2020 We realize and model a Rydberg-state atom interferometer for measurement of phase and intensity of radio-frequency (RF) electromagnetic waves. A phase reference is supplied to the atoms via a modulated laser beam, enabling atomic measurement of the RF wave's phase without an external RF reference wave.
Anderson, David A. +4 more
openaire +2 more sources
Deep Synoptic Array Science: Discovery of the Host Galaxy of FRB 20220912A
The Astrophysical Journal Letters, 2023 We report the detection and interferometric localization of the repeating fast radio burst (FRB) source FRB 20220912A during commissioning observations with the Deep Synoptic Array (DSA-110).
Vikram Ravi +28 more
doaj +1 more source
An Updated View of the Milky Way from Maser Astrometry
Universe, 2022 Astrometric observations of maser sources in the Milky Way, using the Very Long Baseline Interferometry (VLBI) technique, have been exploited to determine the spiral structure of our Galaxy. Several major spiral arms have now been pinpointed in the first
Katharina Immer, Kazi L. J. Rygl
doaj +1 more source
Interferometry and the study of protoplanetary disks*
EPJ Web of Conferences, 2015 Interferometry offers access to scales that are unresolvable using single dish telescopes, which is especially important when investigating objects with small angular sizes, such as protoplanetary disks.
Ilee John D., Greaves Jane S.
doaj +1 more source
Deep learning-based imaging in radio interferometry
Astronomy & Astrophysics, 2022 Context.The sparse layouts of radio interferometers result in an incomplete sampling of the sky in Fourier space which leads to artifacts in the reconstructed images. Cleaning these systematic effects is essential for the scientific use of radiointerferometric images.Aims.Established reconstruction methods are often time-consuming, require expert ...
K. Schmidt +7 more
openaire +2 more sources
IONOSPHERIC POWER-SPECTRUM TOMOGRAPHY IN RADIO INTERFEROMETRY [PDF]
The Astrophysical Journal, 2010 8 pages; Accepted for publication in ...
openaire +3 more sources