Optical Identification of the Resonance-Stabilized para-Ethynylbenzyl Radical

In order to find out the physical nature of galactic X-ray sources, data on the variability of 24 sources during 1964–1971 have been investigated. The fluxes of 9 sources are found to be increasing to the maximum value (for several months) and then slowly decreasing (for 3 years). These 9 sources have been related by us to the class of X-ray Novae. The X-ray Nova synthetic light curve has been drawn from data of the fluxes of 9 discovered Novae. Assumptions have been made on the physical nature of the X-ray Novae. Between the flares the X-ray Novae may be weak X-ray sources with a luminosity of about 1034 erg s−1. During the flares the luminosity increases to about 1038 erg s−1. The number of X-ray sources in the Galaxy is about 103–104. The object of the optical identification may be a dwarf star of no earlier spectral class than F.

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PROBING THE MSP PRENATAL STAGE: THE OPTICAL IDENTIFICATION OF THE X-RAY BURSTER EXO 1745-248 IN TERZAN 5

The Astrophysical Journal ◽

10.1088/2041-8205/807/1/l1 ◽

2015 ◽

Vol 807 (1) ◽

pp. L1 ◽

Cited By ~ 17

Author(s):

F. R. Ferraro ◽

C. Pallanca ◽

B. Lanzoni ◽

M. Cadelano ◽

D. Massari ◽

...

Keyword(s):

Optical Identification ◽

X Ray

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Use of optical identification tables

An Introduction to the Rock-Forming Minerals ◽

10.1180/dhz.45 ◽

2013 ◽

Keyword(s):

Optical Identification

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Optical identification and quantification of single neutron detection in 6LiF/ZnS scintillators using a CMOS camera

Journal of Instrumentation ◽

10.1088/1748-0221/13/10/p10033 ◽

2018 ◽

Vol 13 (10) ◽

pp. P10033-P10033

Author(s):

M. Mosconi ◽

J. Ortega ◽

E. Abad ◽

R. Martínez ◽

V. Guijarrubia ◽

...

Keyword(s):

Neutron Detection ◽

Cmos Camera ◽

Optical Identification ◽

Single Neutron ◽

Identification And Quantification

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Extragalactic X-ray sources and the diffuse X-ray background

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1979.0060 ◽

1979 ◽

Vol 366 (1726) ◽

pp. 391-402 ◽

Cited By ~ 3

Keyword(s):

Spatial Distribution ◽

Euclidean Space ◽

Active Galaxies ◽

Clusters Of Galaxies ◽

Optical Identification ◽

X Ray ◽

Luminosity Functions ◽

Sky Survey ◽

Order Of Magnitude ◽

X Ray Background

Results from the Ariel 5 sky survey instrument relating to the properties and the spatial distribution of extragalactic X-ray sources are discussed. The lg N -lg S relation for sources in the 2A catalogue is consistent with a uniform distribution of sources in Euclidean space. In addition, measurements of fluctuations in the X-ray background suggest that the Euclidean form of the source counts can be extrapolated to flux levels at least an order of magnitude fainter than the 2A catalogue limit. Information is also available from the optical identification of 2A sources which, through redshift measurements, enables the X-ray luminosity functions of the two main classes of source, namely clusters of galaxies and active galaxies, to be determined. The luminosity functions can be used to calculate the contribution of clusters of galaxies and active galaxies to the diffuse X-ray background in the 2-10 keV range. It is found that cosmological evolution of one or both populations is required to account for the diffuse X-ray background entirely in terms of the integrated emission from these sources.

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