R
Richard J. Edgar
Researcher at Harvard University
Publications - 64
Citations - 3239
Richard J. Edgar is an academic researcher from Harvard University. The author has contributed to research in topics: Supernova remnant & Spectral line. The author has an hindex of 28, co-authored 63 publications receiving 3080 citations. Previous affiliations of Richard J. Edgar include CFA Institute & University of Wisconsin-Madison.
Papers
More filters
Journal ArticleDOI
Self-consistent Coronal Heating and Solar Wind Acceleration from Anisotropic Magnetohydrodynamic Turbulence
TL;DR: In this article, a series of models for the plasma properties along open magnetic flux tubes rooted in solar coronal holes, streamers, and active regions are presented, which represent the first self-consistent solutions that combine chromospheric heating driven by an empirically guided acoustic wave spectrum; coronal heating from Alfven waves that have been partially reflected, then damped by anisotropic turbulent cascade; and solar wind acceleration from gradients of gas pressure, acoustic wave pressure, and Alfven wave pressure.
Journal ArticleDOI
RX J0852.0–4622: Another Nonthermal Shell-Type Supernova Remnant (G266.2–1.2)
Patrick Slane,John P. Hughes,Richard J. Edgar,Paul P. Plucinsky,Emi Miyata,Hiroshi Tsunemi,Bernd Aschenbach +6 more
TL;DR: The newly discovered supernova remnant G266.2-1.2 (RX J0852.0-4622) was observed with ASCA for 120 ks as mentioned in this paper.
Journal ArticleDOI
Plasma Properties in Coronal Holes Derived from Measurements of Minor Ion Spectral Lines and Polarized White Light Intensity
Ruth Esser,Silvano Fineschi,D. Dobrzycka,Shadia Rifai Habbal,Richard J. Edgar,John C. Raymond,John L. Kohl,Madhulika Guhathakurta +7 more
TL;DR: In this paper, a limit on the turbulent wave motion of the background plasma and the thermal motions of the protons and Mg+9 and O+5 ions is estimated from the measured line widths and electron densities derived from white light coronagraph observations, assuming WKB approximation at radial distances covered by the observations.
Journal ArticleDOI
Chandra spectra of the soft x-ray diffuse background
Maxim Markevitch,Marshall W. Bautz,Marshall W. Bautz,Beth Biller,Yousaf M. Butt,Richard J. Edgar,Terrance J. Gaetz,Gordon P. Garmire,Gordon P. Garmire,Catherine E. Grant,Catherine E. Grant,Paul J. Green,Michael Juda,Paul P. Plucinsky,Daniel A. Schwartz,Randall K. Smith,Alexey Vikhlinin,Shanil N. Virani,Bradford J. Wargelin,Scott J. Wolk +19 more
TL;DR: In this paper, Chandra ACIS-S3 was used to model the diffuse component of the cosmic X-ray background (CXB) in the 0.3-7 keV band for four directions at high Galactic latitudes.
Journal ArticleDOI
RXJ 0852.0-0462: Another Nonthermal Shell-Type SNR (G266.2-1.2)
Patrick Slane,John P. Hughes,Richard J. Edgar,Paul P. Plucinsky,Emi Miyata,Hiroshi Tsunemi,Bernd Aschenbach +6 more
TL;DR: The newly discovered supernova remnant G266.2-1.2 (RX J0852.0--0462) was observed with ASCA for 120 ks as mentioned in this paper.