Results 21 to 30 of about 9,734,716 (302)
Time Resolved Two Dimensional X-Ray Densitometry of a Two Phase Flow Downstream of a Ventilated Cavity [PDF]
, 2013 To measure the void fraction distribution in gas-liquid flows, a two-dimensional x-ray densitometry system was developed. This system is capable of acquiring a two-dimensional projection with a 225 cm2 area of measurement through 21 cm of water.
GABILLET, Céline +8 more
core +1 more source
A transient ultraluminous X-ray source in NGC 55 [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Ultraluminous X-ray sources (ULXs) are a class of accreting compact objects with X-ray luminosities above 1039 erg s−1 . The average number of ULXs per galaxy is still not well-constrained, especially given the uncertainty on the fraction of ULX transients.
Robba, A, Barra, F
openaire +7 more sources
The nature of the X-ray transient MAXI J0556−332 [PDF]
, 2012 Phase-resolved spectroscopy of the newly discovered X-ray transient MAXIJ0556-332 has revealed the presence of narrow emission lines in the Bowen region that most likely arise on the surface of the mass donor star in this low-mass X-ray binary.
Charles, PA +25 more
core +1 more source
Compact objects in active galactic nuclei and X-ray binaries [PDF]
, 2007 In this thesis I study the inner-most regions of Active Galactic Nuclei (AGN) using the reverberation mapping technique, and neutron star low-mass X-ray binaries in quiescence using X-ray observations. Using the 13-year optical monitoring data for the
Cackett, Edward M.
core +2 more sources
X-Ray-luminous Supernovae: Threats to Terrestrial Biospheres
The Astrophysical Journal, 2023 The spectacular outbursts of energy associated with supernovae (SNe) have long motivated research into their potentially hazardous effects on Earth and analogous environments.
Ian R. Brunton +4 more
doaj +1 more source
Transient X-ray source A1118—61 [PDF]
Nature, 1976 THE transient X-ray source Ariel 1118—61 was discovered late in 1974 (refs 1, 2). It has been suggested3 that this source may be associated with the long period Mira-type variable RS Cen, which is located within the error box for the X-ray source.
P. J. N. DAVISON, P. W. SANFORD
openaire +1 more source
Recent Transient X-Ray Sources [PDF]
Highlights of Astronomy, 1977 Prior to the launch of the Ariel V satellite in 1974, four transient X-ray sources had been observed. We placed the study of sources of this type amongst the major objectives of the satellite, and so ensured that the spacecraft ground centre was capable of quick reaction, and that experimenters had rapid access to their data, so that new transients ...
openaire +1 more source
DISCOVERY OF MILLIHERTZ X-RAY OSCILLATIONS IN A TRANSIENT ULTRALUMINOUS X-RAY SOURCE IN M82 [PDF]
The Astrophysical Journal, 2010 5 pages, 1 figure, accepted for publication in The Astrophysical Journal ...
Feng, Hua, Rao, Fengyun, Kaaret, Philip
openaire +2 more sources
The RS Oph Outburst of 2021 Monitored in X-Rays with NICER
The Astrophysical Journal, 2023 The 2021 outburst of the symbiotic recurrent nova RS Oph was monitored with the Neutron Star Interior Composition Explorer Mission (NICER) in the 0.2–12 keV range from day one after the optical maximum, until day 88, producing an unprecedented, detailed ...
Marina Orio +21 more
doaj +1 more source
The light curve of a transient X-ray source [PDF]
The Astrophysical Journal, 1975 The Ariel-5 satellite has monitored the X-ray light curve of A1524-62 almost continuously from 40 days prior to maximum light until its disappearance below the effective experimental sensitivity. The source exhibited maximum light on Dec. 4, 1974, at a level of 0.9 the apparent magnitude of the Crab Nebula in the energy band 3-6 keV.
L. J. Kaluzienski +7 more
openaire +1 more source