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19962026
most citedLOFAR: The LOw-Frequency ARray

2.7k citations

Showing 2020Show all

47 papers · 1 filter

physics.plasm-ph2020★ 20 cited

Harmonic radio emission in randomly inhomogeneous plasma

Anna Tkachenko, Vladimir Krasnoselskikh, Andrii Voshchepynets

In present paper, we describe a theoretical model of generation of harmonic emissions of type III solar radio bursts. The goal of our study is to fully take into account the most e…

astro-ph.HE2020★ 55 cited

The impact of Solar wind variability on pulsar timing

C. Tiburzi, G. M. Shaifullah, C. G. Bassa +22

High-precision pulsar timing requires accurate corrections for dispersive delays of radio waves, parametrized by the dispersion measure (DM), particularly if these delays are varia…

astro-ph.SR2020★ 68 cited

Switchbacks: statistical properties and deviations from alfvénicity

A. Larosa, V. Krasnoselskikh, T. Dudok de Witınst +16

{Parker Solar Probe's first solar encounter has revealed the presence of sudden magnetic field deflections that are called switchbacks and are associated with proton velocity enhan…

astro-ph.EP2020★ 11 cited

Encounter of Parker Solar Probe and a Comet-like Object During Their Perihelia: Model Predictions and Measurements

Jiansen He, Bo Cui, Liping Yang +15

Parker Solar Probe (PSP) aims at exploring the nascent solar wind close to the Sun. Meanwhile, PSP is also expected to encounter small objects like comets and asteroids. In this wo…

astro-ph.HE2020★ 45 cited

Dispersion measure variability for 36 millisecond pulsars at 150MHz with LOFAR

J. Y. Donner, J. P. W. Verbiest, C. Tiburzi +19

Radio pulses from pulsars are affected by plasma dispersion, which results in a frequency-dependent propagation delay. Variations in the magnitude of this effect lead to an additio…

astro-ph.CO2020★ 27 cited

Cosmology and the massive photon frequency shift in the Standard-Model Extension

Alessandro D. A. M. Spallicci, José A. Helayël-Neto, Martin López-Corredoira +1

The total red shift might be recast as a combination of the expansion red shift and a static shift due to the energy-momentum tensor non-conservation of a photon propagating th…

astro-ph.HE2020★ 88 cited

Massive black hole binary systems and the NANOGrav 12.5 year results

Hannah Middleton, Alberto Sesana, Siyuan Chen +3

The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has recently reported evidence for the presence of a common stochastic signal across their array of puls…

physics.data-an2020★ 4 cited

Applying clock comparison methods to pulsar timing observations

Siyuan Chen, Francois Vernotte, Enrico Rubiola

Frequency metrology outperforms any other branch of metrology in accuracy (parts in ) and small fluctuations (). In turn, among celestial bodies, the rotation…

physics.space-ph2020★ 22 cited

Wave-particle energy transfer directly observed in an ion cyclotron wave

Daniel Vech, Mihailo M. Martinovic, Kristopher G. Klein +21

Context. The first studies with Parker Solar Probe (PSP) data have made significant progress toward the understanding of the fundamental properties of ion cyclotron waves in the in…

astro-ph.HE2020★ 70 cited

Discovery of a Gamma-ray Black Widow Pulsar by GPU-accelerated Einstein@Home

L. Nieder, C. J. Clark, D. Kandel +39

We report the discovery of 1.97 ms period gamma-ray pulsations from the 75 minute orbital-period binary pulsar now named PSR J1653-0158. The associated Fermi Large Area Telescope g…

astro-ph.SR2020★ 56 cited

Detection of small magnetic flux ropes from the third and fourth Parker Solar Probe encounters

L. -L. Zhao, G. P. Zank, Q. Hu +22

We systematically search for magnetic flux rope structures in the solar wind to within the closest distance to the Sun of 0.13 AU, using data from the third and fourth orbits of th…

astro-ph.HE2020★ 121 cited

Astrophysics Milestones For Pulsar Timing Array Gravitational Wave Detection

Nihan S. Pol, Stephen R. Taylor, Luke Zoltan Kelley +49

The NANOGrav Collaboration reported strong Bayesian evidence for a common-spectrum stochastic process in its 12.5-yr pulsar timing array dataset, with median characteristic strain…

astro-ph.HE2020★ 19 cited

A precise mass measurement of PSR J2045+3633

J. W. McKee, P. C. C. Freire, M. Berezina +10

We present the results of a timing analysis undertaken with the goal of obtaining an improved mass measurement of the recycled pulsar J2045+3633. Using regular high-cadence observa…

astro-ph.HE2020★ 42 cited

A revisit of PSR J19093744 with 15-year high-precision timing

K. Liu, L. Guillemot, A. G. Istrate +10

We report on a high-precision timing analysis and an astrophysical study of the binary millisecond pulsar, PSR J19093744, motivated by the accumulation of data with well improve…

astro-ph.SR2020★ 112 cited

The Solar Orbiter Science Activity Plan: translating solar and heliospheric physics questions into action

I. Zouganelis, A. De Groof, A. P. Walsh +182

Solar Orbiter is the first space mission observing the solar plasma both in situ and remotely, from a close distance, in and out of the ecliptic. The ultimate goal is to understand…

astro-ph.IM2020★ 25 cited

Pulsars with NenuFAR: backend and pipelines

L. Bondonneau, J. -M. Grießmeier, G. Theureau +27

NenuFAR (New extension in Nançay upgrading LoFAR) is a new radio telescope developed and built on the site of the Nançay Radio Observatory. It is designed to observe the largely un…

astro-ph.IM2020★ 7 cited

Detecting the elemental and molecular signatures of life: Laser-based mass spectrometry technologies

Niels F. W. Ligterink, Andreas Riedo, Marek Tulej +8

The identification of extraterrestrial life is one the most exciting and challenging endeavors in space research. The existence of extinct or extant life can be inferred from bioge…

astro-ph.HE2020★ 34 cited

Measuring Interstellar Delays of PSR J0613-0200 over 7 years, using the Large European Array for Pulsars

R. A. Main, S. A. Sanidas, J. Antoniadis +19

Using data from the Large European Array for Pulsars (LEAP), and the Effelsberg telescope, we study the scintillation parameters of the millisecond pulsar J0613-0200 over a 7 year…

physics.space-ph2020★ 28 cited

Narrowband oblique whistler-mode waves: Comparing properties observed by Parker Solar Probe at <0.2 AU and STEREO at 1 AU

C. Cattell, B. Short, A. Breneman +15

AIM: Large amplitude narrowband obliquely propagating whistler-mode waves at frequencies of ~0.2 fce (electron cyclotron frequency) are commonly observed at 1 AU, and are most cons…

physics.space-ph2020★ 23 cited

A charging model for the Rosetta spacecraft

F. L. Johansson, A. I. Eriksson, N. Gilet +5

Context. The electrostatic potential of a spacecraft, VS, is important for the capabilities of in situ plasma measurements. Rosetta has been found to be negatively charged during m…

physics.space-ph2020★ 30 cited

Whistler Waves and Electron Properties in the Inner Heliosphere: Helios Observations

Vamsee Krishna Jagarlamudi, Olga Alexandrova, Laura Bercic +4

We present the analysis of narrowband whistler wave signatures observed in the inner heliosphere (0.3-1 au). These signatures are bumps in the spectral density in the 10-200 Hz fre…

astro-ph.HE2020★ 61 cited

Einstein@Home Discovery of the Gamma-ray Millisecond Pulsar PSR J2039-5617 Confirms Its Predicted Redback Nature

C. J. Clark, L. Nieder, G. Voisin +19

The Fermi Large Area Telescope gamma-ray source 3FGL J2039.65618 contains a periodic optical and X-ray source that was predicted to be a "redback" millisecond pulsar (MSP) binar…

gr-qc2020★ 63 cited

Addressing the cosmological tension by the Heisenberg uncertainty

Salvatore Capozziello, Micol Benetti, Alessandro D. A. M Spallicci

The uncertainty on measurements, given by the Heisenberg principle, is a quantum concept usually not taken into account in General Relativity. From a cosmological point of view, se…

astro-ph.HE2020★ 66 cited

Simultaneous multi-telescope observations of FRB 121102

M. Caleb, B. W. Stappers, T. D. Abbott +29

We present 11 detections of FRB 121102 in ~3 hours of observations during its 'active' period on the 10th of September 2019. The detections were made using the newly deployed MeerT…