activity
20002023
most citedA coordinated X-ray and Optical Campaign of the Nearest Massive Eclipsing Binary, Orionis Aa: IV. A multiwavelength, non-LTE spectroscopic analysis

271 citations · 2.7k across the 80 of their papers we have counts for

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Showing 2004Show all

8 papers · 1 filter

astro-ph2004

XMM-Newton Observations of the 2003 X-ray Minimum of Eta Carinae

K. Hamaguchi, M. F. Corcoran, T. Gull +3

The XMM-Newton X-ray observatory took part in the multi-wavelength observing campaign of the massive, evolved star Eta Carinae in 2003 during its recent X-ray minimum. This paper r…

astro-ph2004

X-ray Gyrations of Eta Carinae, or, Is Presence of Evidence Evidence of Presence?

M. F. Corcoran, K. Hamaguchi, T. Gull +2

We review the properties of the variable X-ray emission from the extremely massive star Eta Carinae concentrating on the last X-ray minimum, and briefly consider the possible role…

astro-ph2004★ 59 cited

A Change in the Physical State of Carinae?

K. Davidson, J. C. Martin, R. M. Humphreys +8

During Car's spectroscopic event in mid-2003, the stellar wind's bright H and H emission lines temporarily had a distinctive shape unlike that reported on any previous oc…

astro-ph2004★ 1 cited

X-ray and radio emission from colliding stellar winds

J. M. Pittard, S. M. Dougherty, R. F. Coker +1

The collision of the hypersonic winds in early-type binaries produces shock heated gas, which radiates thermal X-ray emission, and relativistic electrons, which emit nonthermal rad…

astro-ph2004★ 29 cited

A Period and a Prediction for the Of?p Spectrum Alternator HD 191612

Nolan R. Walborn, Ian D. Howarth, Gregor Rauw +7

The observational picture of the enigmatic O-type spectrum variable HD191612 has been sharpened substantially. A symmetrical, low-amplitude light curve with a period near 540 d has…

astro-ph2004

Probing Colliding Wind Binaries with High-Resolution X-ray Spectra

D. B. Henley, I. R. Stevens, J. M. Pittard +2

X-ray line profiles represent a new way of studying the winds of massive stars. In particular, they enable us to probe in detail the wind-wind collision in colliding wind binaries,…

astro-ph2004

Multi-Wavelength Observations of Colliding Stellar Winds

M. F. Corcoran, J. M. Pittard, I. R. Stevens +2

Massive colliding wind binary stars serve as laboratories for the study of strong-shock physics. In these systems fundamental flow parameters (velocities, densities, directions) ar…

astro-ph2004★ 47 cited

Chandra Observation of the Trifid Nebula: X-ray emission from the O star complex and actively forming pre-main sequence stars

J. Rho, S. Ramirez, M. F. Corcoran +2

The Trifid Nebula, a young star-forming HII region, was observed for 16 hours by the Chandra X-ray Observatory. We detected 304 X-ray sources, thirty percent of which are hard sour…