output
19922026
most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

Showing 2022 · astro-ph.SRShow all

26 papers · 2 filters

astro-ph.SR2022★ 24 cited

Solar flare hard X-rays from the anchor points of an eruptive filament

Muriel Zoë Stiefel, Andrea Francesco Battaglia, Krzysztof Barczynski +7

Context. We present an analysis of a GOES M1.8 flare with excellent observational coverage in UV, EUV, and X-ray, including observations from the instruments IRIS, SDO with AIA, Hi…

astro-ph.SR2022★ 14 cited

Identifying the energy release site in a Solar microflare with a jet

Andrea Francesco Battaglia, Wen Wang, Jonas Saqri +10

One of the main science questions of the Solar Orbiter and Parker Solar Probe missions deals with understanding how electrons in the lower solar corona are accelerated and how they…

astro-ph.SR2022★ 31 cited

The radial variation of the solar wind turbulence spectra near the kinetic break scale from Parker Solar Probe measurements

S. Lotz, A. E. Nel, R. T. Wicks +7

In this study we examine the radial dependence of the inertial and dissipation range indices, as well as the spectral break separating the inertial and dissipation range in power d…

astro-ph.SR2022★ 12 cited

The First Survey of Quiet Sun Features Observed in Hard X-Rays With NuSTAR

Sarah Paterson, Iain G. Hannah, Brian W. Grefenstette +5

We present the first survey of quiet Sun features observed in hard X-rays (HXRs), using the the Nuclear Spectroscopic Telescope ARray (NuSTAR), a HXR focusing optics telescope. The…

astro-ph.SR2022★ 17 cited

Structured type III radio bursts observed in interplanetary space

Immanuel C. Jebaraj, Jasmina Magdalenić, Vladimir Krasnoselskikh +2

Context: The last few decades has seen numerous studies dedicated to fine structures of type III radio bursts observed in the metric to decametric wavelengths. Majority of explanat…

astro-ph.SR2022★ 39 cited

Acceleration of polytropic solar wind: Parker Solar Probe observation and one-dimensional model

Chen Shi, Marco Velli, Stuart D. Bale +3

The acceleration of the solar coronal plasma to supersonic speeds is one of the most fundamental yet unresolved problem in heliophysics. Despite the success of Parker's pioneering…

astro-ph.SR2022★ 31 cited

Magnetic field spectral evolution in the inner heliosphere

Nikos Sioulas, Zesen Huang, Chen Shi +23

Parker Solar Probe and Solar Orbiter data are used to investigate the radial evolution of magnetic turbulence between au. The spectrum is studied as…

astro-ph.SR2022★ 115 cited

Interchange reconnection as the source of the fast solar wind within coronal holes

S. D. Bale, J. F. Drake, M. D. McManus +13

The fast solar wind that fills the heliosphere originates from deep within regions of open magnetic field on the Sun called coronal holes. The energy source responsible for acceler…

astro-ph.SR2022★ 3 cited

The Spectrometer Telescope for Imaging X-rays (STIX) on Solar Orbiter

Laura A. Hayes, Sophie Musset, Daniel M üller +1

The Spectrometer/Telescope for Imaging X-rays (STIX) is one of the 10 instruments on-board the scientific payload of ESA's Solar Orbiter mission. STIX provides hard X-ray imaging s…

astro-ph.SR2022★ 10 cited

Association of intermittency with electron heating in the near-Sun solar wind

C. Phillips, R. Bandyopadhyay, D. J. McComas +1

Several studies in the near-Earth environment show that intermittent structures are important sites of energy dissipation and particle energization. Recent Parker Solar Probe (PSP)…

astro-ph.SR2022★ 34 cited

Patches of magnetic switchbacks and their origins

Chen Shi, Olga Panasenco, Marco Velli +18

Parker Solar Probe (PSP) has shown that the solar wind in the inner heliosphere is characterized by the quasi omni-presence of magnetic switchbacks ("switchback" hereinafter), loca…

astro-ph.SR2022★ 29 cited

Magnetic field intermittency in the solar wind: PSP and SolO observations ranging from the Alfven region out to 1 AU

Nikos Sioulas, Zesen Huang, Marco Velli +17

and data are utilized to investigate magnetic field intermittency in the solar wind (SW). Small-scale intermittency is observed to radially strengthen…

astro-ph.SR2022★ 5 cited

Ramaty High Energy Solar Spectroscopic Imager (RHESSI)

Brian R. Dennis, Albert Y. Shih, Gordon J. Hurford +1

This paper describes the X-ray and gamma-ray imaging spectroscopy capabilities of the Ramaty High Energy Solar Spectroscopic Imager (RHESSI). It also outlines RHESSI's major scient…

astro-ph.SR2022

Radial evolution of thermal and suprathermal electron populations in the slow solar wind from 0.13 to 0.5 au : Parker Solar Probe Observations

Joel B. Abraham, Christopher J Owen, Daniel Verscharen +8

We develop and apply a bespoke fitting routine to a large volume of solar wind electron distribution data measured by Parker Solar Probe (PSP) over its first five orbits, covering…

astro-ph.SR2022★ 21 cited

On the properties of Alfvénic switchbacks in the expanding solar wind: the influence of the Parker spiral

Jonathan Squire, Zade Johnston, Alfred Mallet +1

Switchbacks -- rapid, large deflections of the solar wind's magnetic field -- have generated significant interest as possible signatures of the key mechanisms that heat the corona…

astro-ph.SR2022★ 9 cited

On the faintest solar coronal hard X-rays observed with FOXSI

Juan Camilo Buitrago-Casas, Lindsay Glesener, Steven Christe +23

Solar nanoflares are small eruptive events releasing magnetic energy in the quiet corona. If nanoflares follow the same physics as their larger counterparts, they should emit hard…

astro-ph.SR2022★ 17 cited

On the utility of flux rope models for CME magnetic structure below 30

Benjamin Lynch, Nada Al-Haddad, Wenyuan Yu +2

We present a comprehensive analysis of the three-dimensional magnetic flux rope structure generated during the Lynch et al. (2019) magnetohydrodynamic (MHD) simulation of a global-…

astro-ph.SR2022★ 9 cited

Parker Solar Probe observations of near- harmonics emissions in the near-Sun solar wind and their dependence on the magnetic field direction

Sabrina F. Tigik, Andris Vaivads, David M. Malaspina +1

Wave emissions at frequencies near electron gyrofrequency harmonics are observed at small heliocentric distances below about 40 solar radii and are known to occur in regions with q…

astro-ph.SR2022★ 2 cited

On the properties of Alfvénic switchbacks in the expanding solar wind: three-dimensional numerical simulations

Zade Johnston, Jonathan Squire, Alfred Mallet +1

Switchbacks -- abrupt reversals of the magnetic field within the solar wind -- have been ubiquitously observed by Parker Solar Probe (PSP). Their origin, whether from processes nea…

astro-ph.SR2022★ 28 cited

Forward-fitting STIX visibilities

Anna Volpara, Paolo Massa, Emma Perracchione +6

Aima. To determine to what extent the problem of forward fitting visibilities measured by the Spectrometer/Telescope Imaging X-rays (STIX) on-board Solar Orbiter is more challengin…

astro-ph.SR2022★ 17 cited

Density And Velocity Fluctuations of Alpha Particles in Magnetic Switchbacks

M. D. McManus, J. L. Verniero, S. D. Bale +9

Magnetic switchbacks, or sudden reversals in the magnetic field's radial direction, are one of the more striking observations of Parker Solar Probe (PSP) thus far in its mission. W…

astro-ph.SR2022★ 10 cited

Features of magnetic field switchbacks in relation to the local-field geometry of large-amplitude Alfvénic oscillations: \emph{Wind} and \emph{PSP} observations

S. Bourouaine, J. C. Perez, N. E. Raouafi +3

In this letter we report observations of magnetic switchback (SB) features near 1 au using data from the \emph{Wind} spacecraft. These features appear to be strikingly similar to t…

astro-ph.SR2022★ 22 cited

Tracking a beam of electrons from the low solar corona into interplanetary space with the Low Frequency Array, Parker Solar Probe and 1 au spacecraft

Samuel T. Badman, Eoin P. Carley, Luis Alberto Cañizares +7

Type III radio bursts are the result of plasma emission from mildly relativistic electron beams propagating from the low solar corona into the heliosphere where they can eventually…

astro-ph.SR2022★ 23 cited

The preferential orientation of magnetic switchbacks, implications for solar magnetic flux transport

Naïs Fargette, Benoit Lavraud, Alexis P. Rouillard +3

We investigate the orientation of the magnetic field deflections in switchbacks (SB) to determine if they are characterised by a possible preferential orientation. We compute the d…