UG�-4 wide band generator with electronic control and UShT-4 universal stand, for spectral analysis of materials (E)

1973 ◽  
Vol 19 (1) ◽  
pp. 952-956
Author(s):  
B. G. Voronov
Keyword(s):  
Spectral Analysis ◽  
Wide Band ◽  
Electronic Control ◽  
Universal Stand

scholarly journals Revisiting the X-ray emission of the asynchronous polar V1432 Aql

2022 ◽  
Vol 21 (12) ◽  
pp. 315
Author(s):  
Qi-Shan Wang ◽  
Sheng-Bang Qian ◽  
Li-Ying Zhu
Keyword(s):  
Magnetic Field ◽  
Spectral Analysis ◽  
Accretion Rate ◽  
Wide Band ◽  
Reflection Effect ◽  
X Ray ◽  
Low Intensity ◽  
Strong Reflection ◽  
Orbital Modulation ◽  
The Magnetic Field

Abstract As the only eclipsing asynchronous polar, V1432 Aql provides an excellent laboratory to study the interaction between the accreted matter and the magnetic field. Here, we report an analysis of the X-ray data from the contemporaneous NuSTAR and Swift-XRT observations. The X-ray data present a profile with a low-intensity state for almost half an orbital period, a dip at 0.6 phase, and a peak at 0.75 phase, which suggests that there was only one accretion region during the observation and the claim is supported by the spectral analysis. The comparison with the previous data indicates that the X-ray data have an orbital modulation, as the case in BeppoSAX, rather than a spin one observed in ROSAT. We attribute the orbit and spin modulations to the different accretion geometries at work. The spectral analysis of the wide-band data presents a significant reflection effect, a commonly observed soft X-ray temperature, and the energy balance in V1432 Aql. Additionally, we obtained a low total accretion rate of 1.3 × 10−10 M ⊙ yr−1 and a high specific accretion rate of 3.8 g cm−2 s−1 which explains the strong reflection from the surface of the white dwarf. However, due to its complex emission, a more physical understanding of its accretion geometry is still outstanding.

Wide-band spectral analysis of blood pressure and RR interval variability in borderline and mild hypertension

1999 ◽  
Vol 19 (6) ◽  
pp. 490-496 ◽  
Author(s):  
Reijo Takalo ◽  
Ilkka Korhonen ◽  
Heli Sorsa ◽  
Silja Majahalme ◽  
Martti Tuomisto ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Spectral Analysis ◽  
Mild Hypertension ◽  
Wide Band ◽  
Rr Interval

Seven-colour photometry at the Geneva Observatory

1966 ◽  
Vol 24 ◽  
pp. 262-266 ◽  
Author(s):  
M. Golay
Keyword(s):  
Wide Band ◽  
Electric System ◽  
Band Type

During the last 5 years, we have developed a seven-colour photometry at the Geneva Observatory. Our multicolour photo-electric system is of a wide-band type; the bandwidth being about 500Å for four filters. The three others are similar to theUBVsystem. In Table 1 we give the filter combinations used in our photometry (1).

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