Copernicus and Ariel V observations of Hercules X-1
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چکیده
منابع مشابه
ar X iv : a st ro - p h / 96 01 16 7 v 1 2 9 Ja n 19 96 BATSE SD Observations of Hercules X - 1
The cyclotron line in the spectrum of the accretion-powered pulsar Her X-1 offers an opportunity to assess the ability of the BATSE Spectroscopy Detectors (SDs) to detect lines like those seen in some GRBs. Preliminary analysis of an initial SD pulsar mode observation of Her X-1 indicated a cyclotron line at an energy of ≈ 44 keV, rather than at the expected energy of ≈ 36 keV. Our analysis of ...
متن کاملSuzaku Observations of Hercules X-1 : Measurements of the Two Cyclotron Harmonics
The accretion-powered pulsar Her X-1 was observed with Suzaku twice in its main-on state, on 2005 October 5-6 and 2006 March 29-30, for a net exposure of 30.5 ks and 34.4 ks, respectively. In the 2005 and 2006 observations, the source was detected at an average 10-30 keV intensity of 290 mCrab and 230 mCrab, respectively. The intrinsic pulse period was measured on both occasions at 1.23776 s by...
متن کاملThe BeppoSAX LECS X-ray spectrum of Hercules X-1
We present 0.1–10 keV observations of HerX-1 obtained with the Low-Energy Spectrometer Concentrator instrument onboard the BeppoSAX satellite during the main on-state of the 35 day cycle. We confirm the existence of an intense 0.093 keV blackbody component and a broad emission feature at 0.94 keV. The pulse phase dependence of these components is similar, suggesting a common origin. This is mos...
متن کاملX-ray Line Emission in Hercules X-1
We find line emission from the hydrogen-and/or helium-like ions of Ne, O, N and C in the low and short-on states of Her X-1, using the XMM-Newton Reflection Grating Spectrometer. The emission line velocity broadening is 200 < σ < 500 km s −1. Plasma diagnostics with the Ne IX, O VII and N VI Heα lines and the radiative re-combination continua of O VII and N VII, indicate the gas is heated by ph...
متن کاملAriel FARM 19 1
SUMMARY. It has been recently found that bis(pyrro1idine-N-carbodithioato)-oxovanadium (IV) is an orally active insulin-mimetic complex. In order to facilitate the characterization and rapid identification of this interesting drug, we have recorded its infrared and Raman spectra and made an assignment of its most characteristic bands. On the basis of this analysis some structural peculiarities ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1977
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/178.1.1p