Results 21 to 30 of about 195 (150)
The nature of SS433 and the ultraluminous X-ray sources [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 MNRAS, in press. 7 pages, no figures.
Begelman, M. C. +3 more
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X-ray observations of ultraluminous X-ray sources [PDF]
Astrophysics and Space Science, 2007 Invited talk at the 5th Stromlo Symposium. 10 pages, 4 figures.
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The Ultraluminous X‐Ray Sources Near the Center of M82 [PDF]
The Astrophysical Journal, 2007 We report the identification of a recurrent ultraluminous X-ray source (ULX), a highly absorbed X-ray source (possibly a background AGN), and a young supernova remnant near the center of the starburst galaxy M82. From a series of Chandra observations taken from 1999 to 2005, we found that the transient ULX first appeared in 1999 October.
Hsieh, PY +4 more
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Identification of Bubble Nebulae around NGC 55 ULX-1 with MUSE Observations
The Astrophysical Journal, 2023 Using the Multi Unit Spectroscopic Explorer (MUSE) instrument on the Very Large Telescope, we identified three bubble nebulae (denoted as A, B, and C) around an ultraluminous X-ray source (ULX) in NGC 55.
Changxing Zhou, Hua Feng, Fuyan Bian
doaj +1 more source
OPTICAL COUNTERPARTS OF THE NEAREST ULTRALUMINOUS X-RAY SOURCES [PDF]
The Astrophysical Journal Supplement Series, 2013 ApJS in press. 51 pages; 13 pages of text followed by colour figures and tables. Figure quality reduced to satisfy arXiv regulations, for high quality figure, contact j.c.gladstone@ualberta.ca or download accepted version from ApJS when ...
Gladstone, J.C. +6 more
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Ultraluminous X-ray Sources and Their Nebulae [PDF]
AIP Conference Proceedings, 2008 One of the interesting features of Ultraluminous X-ray sources is that many of them are surrounded by luminous nebulae exhibiting diverse observational properties. In different cases the nebulae are photoionized or shock-powered. Generally, the two energy sources appear to coexist.
Pavel Abolmasov, Magnus Axelsson
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Radio Emission from an Ultraluminous X-ray Source [PDF]
Science, 2003 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.
Kaaret, Philip +3 more
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A bright ultraluminous X-ray source in NGC 5907 [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 We present a multi-mission X-ray analysis of a bright (peak observed 0.3-10 keV luminosity of ~ 6x10^{40} erg s^{-1}), but relatively highly absorbed ULX in the edge-on spiral galaxy NGC 5907. The ULX is spectrally hard in X-rays (Gamma ~ 1.2-1.7, when fitted with an absorbed power-law), and has a previously-reported hard spectral break consistent with
Sutton, A. D. +6 more
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The Lack of Halo Ultraluminous X-Ray Sources [PDF]
The Astrophysical Journal, 2006 4 pages accepted to ...
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The Astrophysical Journal, 2023 Despite the 30 yr history of ultraluminous X-ray sources (ULXs) studies, issues such as the majority of their physical natures (i.e., neutron stars, stellar-mass black holes, or intermediate black holes) as well as the accretion mechanisms are still ...
Chen-Hsun Ma +3 more
doaj +1 more source