DIRECT DETECTION OF AN ULTRALUMINOUS ULTRAVIOLET SOURCE
نویسندگان
چکیده
منابع مشابه
First Detection of Mid-infrared Variability from an Ultraluminous X-Ray Source Holmberg II X-1
We present mid-infrared (IR) light curves of the Ultraluminous X-ray Source (ULX) Holmberg II X-1 from observations taken between 2014 January 13 and 2017 January 5 with the Spitzer Space Telescope at 3.6 and 4.5 μm in the Spitzer Infrared Intensive Transients Survey. The mid-IR light curves, which reveal the first detection of mid-IR variability from a ULX, is determined to arise primarily fro...
متن کاملNew flaring of an ultraluminous X-ray source in NGC1365
We have studied a highly variable ultraluminous X-ray source (ULX) in the Fornax galaxy NGC1365, with a series of 12 Chandra and XMM-Newton observations between 2002 and 2006. In 2006 April, the source peaked at a luminosity ≈ 3 × 10 erg s in the 0.3–10 keV band (similar to the maximum luminosity found by ASCA in 1995), and declined on an e-folding timescale ≈ 3 days. The X-ray spectrum is alwa...
متن کاملYet another galaxy identification for an ultraluminous X - ray source ⋆
We report on the identification of the optical and infrared counterparts of the ultraluminous X-ray source (ULX) XMMU J121214.5+131248 (NGC4168-ULX1). The optical spectrum yields a redshift of z = 0.217, which implies that the ULX is not associated with the nearby galaxy NGC 4168, but rather with a background object. Optical spectral line ratios and the spectral energy distribution constructed ...
متن کاملRadio emission from an ultraluminous x-ray source.
The physical nature of ultraluminous x-ray sources is uncertain. Stellar-mass black holes with beamed radiation and intermediate black holes with isotropic radiation are two plausible explanations. We discovered radio emission from an ultraluminous x-ray source in the dwarf irregular galaxy NGC 5408. The x-ray, radio, and optical fluxes as well as the x-ray spectral shape are consistent with be...
متن کاملStis Ultraviolet/optical Spectroscopy of 'warm' Ultraluminous Infrared Galaxies
We present high spatial resolution ultraviolet and optical spectroscopy, obtained using the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope, of nuclear structures within four 'warm' Ultraluminous Infrared Galaxies (ULIRGs). We find an AGN in at least three, and probably all four of our sample, hosted in a compact, optically luminous 'knot'. In three cases these knots we...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2010
ISSN: 2041-8205,2041-8213
DOI: 10.1088/2041-8205/714/1/l167