output
19962026
most citedLOFAR: The LOw-Frequency ARray

2.7k citations

Showing 2021Show all

48 papers · 1 filter

physics.space-ph2021★ 23 cited

Spectrum of kinetic plasma turbulence at 0.3-0.9 astronomical units from the Sun

Olga Alexandrova, Vamsee Krishna Jagarlamudi, Petr Hellinger +3

We investigate spectral properties of turbulence in the solar wind that is a weakly collisional astrophysical plasma, accessible to in-situ observations. Using the Helios search co…

astro-ph.HE2021★ 263 cited

Strong-field Gravity Tests with the Double Pulsar

M. Kramer, I. H. Stairs, R. N. Manchester +27

Continued observations of the Double Pulsar, PSR J0737-3039A/B, consisting of two radio pulsars (A and B) that orbit each other with a period of 2.45hr in a mildly eccentric (e=0.0…

astro-ph.EP2021★ 5 cited

Observing Jupiter's radio emissions using multiple LOFAR stations: a first case study of the Io-decametric emission using the Irish IE613, French FR606 and German DE604 stations

Corentin K. Louis, Caitriona M. Jackman, Jean-Mathias Griessmeier +11

The Low Frequency Array (LOFAR) is an international radio telescope array, consisting of 38 stations in the Netherlands and 14 international stations spread over Europe. Here we pr…

astro-ph.SR2021

Parker Solar Probe evidence for the absence of whistlers close to the Sun to scatter strahl and regulate heat flux

C. Cattell, A. Breneman, J. Dombeck +14

Using the Parker Solar Probe FIELDS bandpass filter data and SWEAP electron data from Encounters 1 through 9, we show statistical properties of narrowband whistlers from ~16 Rs to…

gr-qc2021★ 74 cited

Narrowband searches for continuous and long-duration transient gravitational waves from known pulsars in the LIGO-Virgo third observing run

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1658

Isolated neutron stars that are asymmetric with respect to their spin axis are possible sources of detectable continuous gravitational waves. This paper presents a fully-coherent s…

astro-ph.IM2021★ 15 cited

A comparative analysis of pulse time-of-arrival creation methods

J. Wang, G. M. Shaifullah, J. P. W. Verbiest +15

Extracting precise pulse times of arrival (TOAs) and their uncertainties is the first and most fundamental step in high-precision pulsar timing. In the classical method, TOAs are d…

astro-ph.GA2021★ 1 cited

Pilot study and early results of the Cosmic Filaments and Magnetism Survey with Nenufar: the Coma cluster field

Bonnassieux Etienne, Evangelia Tremou, Julien N. Girard +9

NenuFAR, the New Extension in Nancay Upgrading LOFAR, is currently in its early science phase. It is in this context that the Cosmic Filaments and Magnetism Pilot Survey is observi…

astro-ph.HE2021★ 53 cited

Noise analysis in the European Pulsar Timing Array data release 2 and its implications on the gravitational-wave background search

A. Chalumeau, S. Babak, A. Petiteau +49

The European Pulsar Timing Array (EPTA) collaboration has recently released an extended data set for six pulsars (DR2) and reported evidence for a common red noise signal. Here we…

astro-ph.HE2021★ 74 cited

Searches for Gravitational Waves from Known Pulsars at Two Harmonics in the Second and Third LIGO-Virgo Observing Runs

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1694

We present a targeted search for continuous gravitational waves (GWs) from 236 pulsars using data from the third observing run of LIGO and Virgo (O3) combined with data from the se…

astro-ph.HE2021★ 282 cited

Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: Inferences in the stochastic gravitational-wave background search

S. Chen, R. N. Caballero, Y. J. Guo +49

We present results from the search for a stochastic gravitational-wave background (GWB) as predicted by the theory of General Relativity using six radio millisecond pulsars from th…

astro-ph.SR2021★ 21 cited

The role of asymmetries in coronal rain formation during thermal non-equilibrium cycles

Gabriel Pelouze, Frédéric Auchère, Karine Bocchialini +4

Context: Thermal non-equilibrium (TNE) produces several observables that can be used to constrain the spatial and temporal distribution of solar coronal heating. Its manifestations…

astro-ph.SR2021★ 58 cited

Strong perpendicular velocity-space in proton beams observed by Parker Solar Probe

J. L. Verniero, B. D. G. Chandran, D. E. Larson +16

The SWEAP instrument suite on Parker Solar Probe (PSP) has detected numerous proton beams associated with coherent, circularly polarized, ion-scale waves observed by PSP's FIELDS i…

astro-ph.SR2021★ 35 cited

Whistler waves observed by Solar Orbiter / RPW between 0.5 AU and 1 AU

M. Kretzschmar, T. Chust, V. Krasnoselskikh +29

The goal of our study is to detect and characterize the electromagnetic waves that can modify the electron distribution functions, with a special attention to whistler waves. We an…

gr-qc2021★ 62 cited

The NANOGrav 12.5-year data set: Search for Non-Einsteinian Polarization Modes in theGravitational-Wave Background

Zaven Arzoumanian, Paul T. Baker, Harsha Blumer +68

We search NANOGrav's 12.5-year data set for evidence of a gravitational wave background (GWB) with all the spatial correlations allowed by general metric theories of gravity. We fi…

astro-ph.SR2021★ 19 cited

Magnetic reconnection as a mechanism to produce multiple protonpopulations and beams locally in the solar wind

B. Lavraud, R. Kieokaew, N. Fargette +37

Context. Spacecraft observations early revealed frequent multiple proton populations in the solar wind. Decades of research on their origin have focused on processes such as magnet…

astro-ph.SR2021★ 17 cited

Solar Orbiter/RPW antenna calibration in the radio domain and its application to type III burst observations

A. Vecchio, M. Maksimovic, V. Krupar +18

In order to allow for a comparison with the measurements from other antenna systems, the voltage power spectral density measured by the Radio and Plasma waves receiver (RPW) on boa…

astro-ph.HE2021★ 28 cited

Dual-frequency single-pulse study of PSR B0950+08

A. V. Bilous, J. M. Griessmeier, T. Pennucci +33

PSR B0950+08 is a bright non-recycled pulsar whose single-pulse fluence variability is reportedly large. Based on observations at two widely separated frequencies, 55 MHz (NenuFAR)…

astro-ph.SR2021★ 74 cited

Characteristic scales of magnetic switchback patches near the Sun and their possible association with solar supergranulation and granulation

Naïs Fargette, Benoit Lavraud, Alexis Rouillard +16

Parker Solar Probe (PSP) data recorded within a heliocentric radial distance of 0.3 AU have revealed a magnetic field dominated by Alfvénic structures that undergo large local vari…

astro-ph.HE2021★ 14 cited

A broadband radio study of PSR J0250+5854: the slowest-spinning radio pulsar known

C. H. Agar, P. Weltevrede, L. Bondonneau +19

We present radio observations of the most slowly rotating known radio pulsar PSR J0250+5854. With a 23.5 s period, it is close, or even beyond, the - diagram region tho…

astro-ph.EP2021★ 10 cited

Menura: a code for simulating the interaction between a turbulent solar wind and solar system bodies

Etienne Behar, Shahab Fatemi, Pierre Henri +1

Despite the close relationship between planetary science and plasma physics, few advanced numerical tools allow to bridge the two topics. The code Menura proposes a breakthrough to…

astro-ph.HE2021★ 5 cited

Search for Very High-Energy Emission from the millisecond pulsar PSR J0218+4232

V. A. Acciari, S. Ansoldi, L. A. Antonelli +198

PSR J0218+4232 is one of the most energetic millisecond pulsars known and has long been considered as one of the best candidates for very high-energy (VHE; >100 GeV) gamma-ray emis…

astro-ph.GA2021★ 35 cited

Sub-arcsecond imaging with the International LOFAR Telescope: II. Completion of the LOFAR Long-Baseline Calibrator Survey

Neal Jackson, Shruti Badole, John Morgan +69

The Low-Frequency Array (LOFAR) Long-Baseline Calibrator Survey (LBCS) was conducted between 2014 and 2019 in order to obtain a set of suitable calibrators for the LOFAR array. In…

astro-ph.IM2021★ 88 cited

Sub-arcsecond imaging with the International LOFAR Telescope I. Foundational calibration strategy and pipeline

L. K. Morabito, N. J. Jackson, S. Mooney +71

[abridged] The International LOFAR Telescope is an interferometer with stations spread across Europe. With baselines of up to ~2,000 km, LOFAR has the unique capability of achievin…

astro-ph.HE2021★ 10 cited

Follow-up of 27 radio-quiet gamma-ray pulsars at 110-190 MHz using the international LOFAR station FR606

J. -M. Grießmeier, D. A. Smith, G. Theureau +5

The Fermi Large Area Telescope has detected over 260 gamma-ray pulsars. About one quarter of these are labeled as radio-quiet. In the population of nonrecycled gamma-ray pulsars, t…