n32130* --physics--astrophysics--quasi-stellar, radio & x- ray sourcesastrophysicsgalaxiesgamma radiationradiation sourcesrocketssatellitesstarsx radiationFrom the previous speakers, this morning, you have heard about research in astronomy which can be done better in outer space than from the ground....
Example: Bones absorb X-rays more than muscles, so our skeleton shows up on an x-ray. X-ray of a hand on a computer mouse The x-ray plate gets darkened by the x-rays, so our bones appear whiter.But X-rays are bad for us right? Yes, they are!
Detections ofγ-rays1and X-rays2,3from Supernova 1987A, together with its exponential light curve4, have dramatically confirmed theoretical predictions made two decades ago5–7. We discuss what these observations, in August and September 1987, can already tell us about the supernova. Assuming t...
Villa, Low energy gamma ray observations with the MISO telescope. Int. Cosm. Ray Conf. 1, 222–225 (1981b) Google Scholar R.E. Baker, G. Barbaglia, A. Bazzano, L. Boccaccini, A. Bussini, A. Carzaniga, A. Court, A.J. Dean, N.A. Dipper, G. Ferrandi, N. Haskell, C. ...
The scintillation properties of BaF2 doped with 0.002 to 10 mol% Ce3+ have been studied by means of X-ray and gamma ray excitation. The luminescence intensity increases with the Ce concentration until a maximum is reached for 0.2 mol% doped crystals. The light yield is then about 60% more...
We present four X-ray/γ-ray spectra of Cyg X-1 observed in the hard ('low') state simultaneously by Ginga and GRO OSSE on 1991 June 6. The four spectra have almost identical spectral form but vary in normalization within a factor of 2. The 3-30keV Ginga spectra are well represented...
Robust quantitative X-ray phase diagnostic for carbon composite characterisation in the context of lightning induced risk Laureen Guitard , Adrien Stolidi & Amelie Jarnac Article 10 September 2024 | Open Access A hybrid simulation method towards the gamma ray phase contrast imaging for metallic...
X-ray, electromagnetic radiation of extremely short wavelength and high frequency, with wavelengths ranging from about 10^-8 to 10^-12 metre. The passage of X-rays through materials, including biological tissue, can be recorded. Thus, analysis of X-ray i
X-ray sources and effects X-rays can be produced on Earth by sending a high-energy beam of electrons smashing into an atom like copper or gallium, according to Kelly Gaffney, director of the Stanford Synchrotron Radiation Lightsource. When the beam hits the atom, the electrons in the inner...