165 citations · 1.3k across the 24 of their papers we have counts for
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Detection of a Radio Bubble around the Ultraluminous X-ray Source Holmberg IX X-1
Ciprian T. Berghea, Megan C. Johnson, Nathan J. Secrest +3
We present C and X-band radio observations of the famous utraluminous X-ray source (ULX) Holmberg IX X-1, previously discovered to be associated with an optical emission line nebul…
Spitzer IRAC observations of IR excess in Holmberg IX X-1: A circumbinary disk or a variable jet?
R. P. Dudik, C. T. Berghea, T. P. Roberts +4
We present Spitzer Infrared Array Camera (IRAC) photometric observations of the Ultra-luminous X-ray Source (ULX, X-1) in Holmberg IX. We construct a spectral energy distribution (…
The Local Environment of Ultraluminous X-ray Sources Viewed by XMM Newton's Optical Monitor
Ciprian T. Berghea, Rachel P. Dudik, Jonathan Tincher +1
We have used XMM-Newton's Optical Monitor (OM) images to study the local environment of a sample of 27 Ultraluminous X-ray Sources (ULXs) in nearby galaxies. UVW1 fluxes were extra…
Spitzer Observations of MF 16 Nebula and the associated Ultraluminous X-ray Source
Ciprian T. Berghea, Rachel P. Dudik
We present Spitzer Infrared Spectrograph (IRS) observations of the ultra-luminous X-ray source (ULX) NGC 6946 X-1 and its associated nebula MF 16. This ULX has very similar propert…
The First Detection of [O IV] from an Ultraluminous X-ray Source with Spitzer. II. Evidence for High Luminosity in Holmberg II ULX
C. T. Berghea, R. P. Dudik, K. A. Weaver +1
This is the second of two papers examining Spitzer Infrared Spectrograph (IRS) observations of the ultraluminous X-ray source (ULX) in Holmberg II. Here we perform detailed photoio…
The First Detection of [O IV] from an Ultraluminous X-ray Source with Spitzer I. Observational Results for Holmberg II ULX
C. T. Berghea, R. P. Dudik, K. A. Weaver +1
We present the first Spitzer Infrared Spectrograph (IRS) observations of the [O IV] 25.89 m emission line detected from the ultraluminous X-ray source (ULX) in Holmberg II. This…