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Related papers: The KaVA and KVN Pulsar Project

200 papers

Pulsar timing uses the highly stable pulsar spin period to investigate many astrophysical topics. In particular, pulsar timing arrays make use of a set of extremely well-timed pulsars and their time correlations as a challenging detector of…

Astrophysics of Galaxies · Physics 2021-12-16 Michele Maiorano , Francesco De Paolis , Achille A. Nucita

VISTA Variables in the Via Lactea (VVV) is an ESO public near-infrared variability survey of the Galactic bulge and an adjacent area of the southern mid-plane. It will produce a deep atlas in the ZYJHKs filters, and a Ks-band time-series…

Solar and Stellar Astrophysics · Physics 2011-11-09 I. Dekany , M. Catelan , D. Minniti , the VVV Collaboration

The vast majority of pulsars detected by the Fermi Large Area Telescope (LAT) display exponentially cutoff spectra with cutoffs falling in a narrow band around a few GeV. Early spectral modelling predicted spectral cutoffs at energies of up…

High Energy Astrophysical Phenomena · Physics 2016-07-25 M. Breed , C. Venter , A. K. Harding

Pulsars are the only cosmic radio sources known to be sufficiently compact to show diffractive interstellar scintillations. Images of the variance of radio signals in both time and frequency can be used to detect pulsars in large-scale…

Instrumentation and Methods for Astrophysics · Physics 2016-08-17 S. Dai , S. Johnston , M. E. Bell , W. A. Coles , G. Hobbs , R. D. Ekers , E. Lenc

The Square Kilometre Array (SKA) is an integral part of the next-generation observatories that will survey the Universe across the electromagnetic spectrum, and beyond, revolutionizing our view of fundamental physics, astrophysics and…

It is anticipated that future space-born missions, such as Gaia, will be able to determine in optical domain positions of more than 100,000 bright quasars with sub-mas accuracies that are comparable to very long baseline interferometry…

Instrumentation and Methods for Astrophysics · Physics 2013-06-13 Leonid Petrov

We report the discovery of 19 new pulsars identified from archival observations of the Five-hundred-meter Aperture Spherical radio Telescope (FAST) within Galactic latitudes $|b|<5\deg$ and declinations ${\rm Decl.}<-5\deg$. The dataset was…

High Energy Astrophysical Phenomena · Physics 2026-01-06 Shi-Jie Gao , Yi-Xuan Shao , Xiang-Dong Li

To continue the unparalleled success of the Very Large Array (VLA) for radio astronomy, the facility is currently being converted to become the 'Expanded VLA' (EVLA). The EVLA will radically improve the VLA in order to cover the full…

Astrophysics · Physics 2009-11-13 Juergen Ott , Rick Perley , Michael Rupen , the EVLA team

We discuss a multimessenger strategy to detect radio pulses from Galactic binary neutron stars in a very tight orbit with the period shorter than 10 min. On one hand, all-sky surveys by radio instruments are inefficient for detecting faint…

High Energy Astrophysical Phenomena · Physics 2018-12-31 Koutarou Kyutoku , Yuki Nishino , Naoki Seto

We use four observations with the European VLBI network to measure the first precise radio parallax of the Crab Pulsar. We found two in-beam extragalactic sources just outside the Crab Nebula, with one bright enough to use as a background…

High Energy Astrophysical Phenomena · Physics 2023-08-02 Rebecca Lin , Marten H. van Kerkwijk , Franz Kirsten , Ue-Li Pen , Adam T. Deller

We have searched 75 unidentified radio sources selected from the NRAO VLA Sky Survey (NVSS) catalog for the presence of rapidly spinning pulsars and short, dispersed radio bursts. The sources are radio bright, have no identifications or…

Solar and Stellar Astrophysics · Physics 2015-06-15 Deborah Schmidt , Fronefield Crawford , Glen Langston , Claire Gilpin

We have used the Very Long Baseline Array (VLBA) at 43, 23 and 15 GHz to measure the solar gravitational deflection of radio waves among four radio sources during an 18-day period in October 2005. Using phase-referenced radio interferometry…

Cosmology and Nongalactic Astrophysics · Physics 2009-07-22 E. Fomalont , S. Kopeikin , G. Lanyi , J. Benson

We present the catalog of the KVN Calibrator Survey (KVNCS). This first part of the KVNCS is a single dish radio survey conducted at 22 (K band) and 43 GHz (Q band) simultaneously using the Korean VLBI Network (KVN) from 2009 to 2011. A…

Astrophysics of Galaxies · Physics 2017-03-08 Jeong Ae Lee , Bong Won Sohn , Taehyun Jung , Do-Young Byun , Jee Won Lee

Pulsars in the Galactic centre promise to enable unparalleled tests of gravity theories and black hole physics and to serve as probes of the stellar formation history and evolution and the interstellar medium in the complex central region…

Since the 2011 VERITAS discovery of very high energy (VHE; E>100 GeV) gamma rays from the Crab pulsar, there has been concerted effort by the gamma-ray astrophysics community to detect other pulsars in the VHE band in order to place better…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Avery Archer

To date, only 69 pulsars have been identified with a detected pulsed radio emission below 100 MHz. A LOFAR-core LBA census and a dedicated campaign with the Nan\c{c}ay LOFAR station in stand-alone mode were carried out in the years…

High Energy Astrophysical Phenomena · Physics 2020-03-18 L. Bondonneau , J. -M. Grießmeier , G. Theureau , A. V. Bilous , V. I. Kondratiev , M. Serylak , M. J. Keith , A. G. Lyne

We report results of the performance evaluation of a new hardware correlator in Korea, the Daejeon correlator, developed by the Korea Astronomy and Space Science Institute (KASI) and the National Astronomical Observatory of Japan (NAOJ). We…

Pulsar timing is a technique that uses the highly stable spin periods of neutron stars to investigate a wide range of topics in physics and astrophysics. Pulsar timing arrays (PTAs) use sets of extremely well-timed pulsars as a Galaxy-scale…

Instrumentation and Methods for Astrophysics · Physics 2021-10-05 J. P. W. Verbiest , S. Oslowski , S. Burke-Spolaor

The Murchison Widefield Array (MWA), and its recently-developed Voltage Capture System (VCS), facilitates extending the low-frequency range of pulsar observations at high-time and -frequency resolution in the Southern Hemisphere, providing…

High Energy Astrophysical Phenomena · Physics 2018-01-23 Mengyao Xue , N. D. R. Bhat , S. E. Tremblay , S. M. Ord , C. Sobey , N. A. Swainston , D. L. Kaplan , Simon Johnston , B. W. Meyers , S. J. McSweeney

We report on the first millisecond timescale radio interferometric search for the new class of transient known as fast radio bursts (FRBs). We used the Very Large Array (VLA) for a 166-hour, millisecond imaging campaign to detect and…