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

18.1k citations

Showing 2016 · astro-ph.SRShow all

10 papers · 2 filters

astro-ph.SR2016★ 54 cited

Flare differentially rotates sunspot on Sun's surface

Chang Liu, Yan Xu, Wenda Cao +7

Sunspots are concentrations of magnetic field visible on the solar surface (photosphere). It was considered implausible that solar flares, as resulted from magnetic reconnection in…

astro-ph.SR2016★ 75 cited

Global Energetics of Solar Flares: III. Non thermal Energies

Markus J. Aschwanden, Gordon Holman, Aidan O'Flannagain +3

This study entails the third part of a global flare energetics project, in which Ramaty High-Energy Solar Spectroscopic Imager (RHESSI) data of 191 M and X-class flare events from…

astro-ph.SR2016★ 22 cited

An analysis of interplanetary solar radio emissions associated with a coronal mass ejection

Vratislav Krupar, Jonathan Eastwood, Oksana Kruparova +12

Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth-directed. Here we report a rare instance with compreh…

astro-ph.SR2016★ 53 cited

The First Focused Hard X-ray Images of the Sun with NuSTAR

Brian W. Grefenstette, Lindsay Glesener, Säm Krucker +20

We present results from the the first campaign of dedicated solar observations undertaken by the \textit{Nuclear Spectroscopic Telescope ARray} ({\em NuSTAR}) hard X-ray telescope.…

astro-ph.SR2016★ 8 cited

Simulation of Quiet-Sun Hard X-rays Related to Solar Wind Superhalo Electrons

Wen Wang, Linghua Wang, Sam Krucker +1

In this paper, we propose that the accelerated electrons in the quiet Sun could collide with the solar atmosphere to emit Hard X-rays (HXRs) via non-thermal bremsstrahlung, while s…

astro-ph.SR2016★ 49 cited

The injection of ten electron/He-rich SEP events

Linghua Wang, Säm Krucker, Glenn M. Mason +2

We have derived the particle injections at the Sun for ten good electron/He-rich solar energetic particle (SEP) events, using a 1.2 AU particle path length (suggested by anal…

astro-ph.SR2016★ 72 cited

Magnetic-Island Contraction and Particle Acceleration in Simulated Eruptive Solar Flares

S. E. Guidoni, C. R. DeVore, J. T. Karpen +1

The mechanism that accelerates particles to the energies required to produce the observed high-energy impulsive emission in solar flares is not well understood. Drake et al. (2006)…

astro-ph.SR2016★ 51 cited

The first X-ray imaging spectroscopy of quiescent solar active regions with NuSTAR

I. G. Hannah, B. W. Grefenstette, D. M. Smith +15

We present the first observations of quiescent active regions (ARs) using NuSTAR, a focusing hard X-ray telescope capable of studying faint solar emission from high temperature and…

astro-ph.SR2016★ 4 cited

Impulsivity Parameter for Solar Flares

W. G. Fajardo-Mendieta, J. C. Martínez-Oliveros, J. D. Alvarado-Gómez +1

Three phases are typically observed during solar flares: the preflare, impulsive, and decay phases. During the impulsive phase, it is believed that the electrons and other particle…

astro-ph.SR2016★ 20 cited

Sunquake Generation by Coronal Magnetic Restructuring

Alexander J. B. Russell, Michaela K. Mooney, James E. Leake +1

Sunquakes are the surface signatures of acoustic waves in the Sun's interior that are produced by some but not all flares and coronal mass ejections (CMEs). This paper explores a m…