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20002025
most citedThe Atacama Cosmology Telescope: DR4 Maps and Cosmological Parameters

629 citations

Showing astro-ph.HEShow all

6 papers · 1 filter

astro-ph.HE2021★ 2 cited

Chandra revisits WR48a: testing colliding wind models in massive binaries

Svetozar A. Zhekov, Marc Gagne, Stephen L. Skinner

We present results of new Chandra High-Energy Transmission Grating (HETG) observations (2019 November - December) of the massive Wolf-Rayet (WR) binary WR 48a. Analysis of these hi…

astro-ph.HE2021★ 14 cited

Chandra grating spectroscopy of embedded wind shock X-ray emission from O stars shows low plasma temperatures and significant wind absorption

David H. Cohen, Winter Parts, Graham M. Doskoch +4

We present a uniform analysis of six examples of embedded wind shock (EWS) O star X-ray sources observed at high resolution with the Chandra grating spectrometers. By modeling both…

astro-ph.HE2014★ 17 cited

A Chandra Grating Observation of the Dusty Wolf-Rayet Star WR48a

Svetozar A. Zhekov, Marc Gagne, Stephen L. Skinner

We present results of a Chandra High Energy Transmission Grating (HETG) observation of the carbon-rich Wolf-Rayet (WR) star WR48a. These are the first high-resolution spectra of th…

astro-ph.HE2009★ 5 cited

X-ray and UV observations of nova V598 Puppis between 147 and 255 days after outburst

K. L. Page, J. P. Osborne, A. M. Read +6

Aims: The launch of Swift has allowed many more novae to be observed regularly over the X-ray band. Such X-ray observations of novae can reveal ejecta shocks and the nuclear burnin…

astro-ph.HE2009★ 62 cited

Swift observations of the X-ray and UV evolution of V2491 Cyg (Nova Cyg 2008 No. 2)

K. L. Page, J. P. Osborne, P. A. Evans +8

We present extensive, high-density Swift observations of V2491 Cyg (Nova Cyg 2008 No. 2). Observing the X-ray emission from only one day after the nova discovery, the source is fol…

astro-ph.HE2009★ 37 cited

Swift X-ray and UV monitoring of the Classical Nova V458 Vul (Nova Vul 2007)

J. -U. Ness, J. J. Drake, A. P. Beardmore +18

We describe the highly variable X-ray and UV emission of V458 Vul (Nova Vul 2007), observed by Swift between 1 and 422 days after outburst. Initially bright only in the UV, V458 Vu…