• No results found

X ray Emission

X-ray emission from comets, cometary knots, and supernova remnants

X-ray emission from comets, cometary knots, and supernova remnants

... then X-ray emission should exist at the head of the cometary knots similar in appearance to the X-ray images of real comets (Lisse et ...and X-ray emission whenever ...

5

T Tauri stars : mass accretion and X ray emission

T Tauri stars : mass accretion and X ray emission

... resolution X-ray spectroscopy of some T Tauri stars appears to show ev- idence for X-ray emission from accretion shocks ...UV emission, as well as some soft X-rays (Lamzin ...

256

Magnetic fields and X ray emission in pre main sequence stars

Magnetic fields and X ray emission in pre main sequence stars

... Several X-ray observations of AA Tau are available in the literature and show that the star is a highly variable X-ray ...in X-rays in March 1980 and then again in February 1981 using ...

254

IMPLICATIONS OF THE NON-DETECTION OF X-RAY EMISSION FROM HD 149427

IMPLICATIONS OF THE NON-DETECTION OF X-RAY EMISSION FROM HD 149427

... We reported the non-detection of X-ray emission from the enigmatic object HD 149427. This result poses upper limits on the mass accretion rate of the white dwarf. Such low accretion rates are ...

8

Resonant Soft X Ray Inelastic Scattering and Soft X Ray Emission Study of the Electronic Structure of alpha MoO3

Resonant Soft X Ray Inelastic Scattering and Soft X Ray Emission Study of the Electronic Structure of alpha MoO3

... soft x-ray undulators with fixed linear ...the x-ray emission/scattering spectrometer to be rotated outside of the plane of polarization defined by the incident photon polariza- tion ...

8

A study of diffuse radio sources and X-ray emission in six massive clusters

A study of diffuse radio sources and X-ray emission in six massive clusters

... used X-ray Monte Carlo (XMC) technique to generate the temperature map (see Andersson, Pe- terson & Madejski 2007; Peterson, Marshall & Andersson 2007; Andersson et ...etc. X-ray ...

14

X-ray emission from hot subdwarfs with compact companions

X-ray emission from hot subdwarfs with compact companions

... The X-ray emission observed in the HD 49798 binary consists of a very soft and strongly pulsed blackbody-like component (kT = 40 eV), plus a harder spectral component that dominates above ∼1 ...

6

Properties of EUV and X-ray emission in solar active regions

Properties of EUV and X-ray emission in solar active regions

... and X-ray emission observed in these outer re- gions is determined in part by the magnetic field, which allows plasma and thermal energy to flow preferentially in the direction of the field lines, ...

12

Relationship between x ray emission and absorption spectroscopy and the local H bond environment in water

Relationship between x ray emission and absorption spectroscopy and the local H bond environment in water

... water X-ray absorption (XAS) and X-ray emission (XES) spectra and the local H-bond coordination is studied based on structures obtained from path-integral molecular dynamics simulations ...

45

Feedback from winds and supernovae in massive stellar clusters - II. X-ray emission

Feedback from winds and supernovae in massive stellar clusters - II. X-ray emission

... diffuse X-ray emission must result from the action of stellar ...diffuse X-ray emission, though Ezoe et ...diffuse emission (such as those of 30 Doradus, ...

22

Quantum chemical calculations of X ray emission spectroscopy

Quantum chemical calculations of X ray emission spectroscopy

... computed X-ray emission energies and oscillator strengths from EOM-CCSD calculations for a range of molecules comprising atoms from the first row of the periodic table and hydrogen along with the ...

28

A search for soft X-ray emission associated with prominent high-velocity-cloud complexes

A search for soft X-ray emission associated with prominent high-velocity-cloud complexes

... additional X-ray absorbers not traced by the H i radiation; solid lines mark ar- eas where ROSAT detected more radiation than expected by the H i ...excess X- ray ...the X-rays is more ...

20

X-ray Emission from Elliptical Galaxies

X-ray Emission from Elliptical Galaxies

... the X-ray faint ellipticals were mainly located in denser regions, and that the gas in these galaxies had been removed by ram pressure ...of X-ray luminosity with local density is not very ...

10

Characterization of X-ray emission from laser generated plasma

Characterization of X-ray emission from laser generated plasma

... The X-ray spectra were acquired using fast detection technique based on SiC diodes with different active ...The X-ray yield increases with the atomic number of the target, both at low and high ...

5

Thermodynamics effects on the compression dynamics of soft x-ray emission in plasma focus

Thermodynamics effects on the compression dynamics of soft x-ray emission in plasma focus

... with emission of intense radiation such as neutron [1] and abundant amount of soft X-ray (SXR), hard X-ray (HXR), highly energetic ions and electrons ...

31

Hard X-ray emission of the luminous infrared galaxy NGC 6240 as observed by NuSTAR.

Hard X-ray emission of the luminous infrared galaxy NGC 6240 as observed by NuSTAR.

... From the analysis of the Chandra images (see upper panel of Fig. 2), using an aperture photometry technique (see, e.g., Puccetti et al. 2009), we identified nine serendipitous point sources with S /N ≥ 2 in the 0.3 − 8 ...

15

X-ray emission from thin plasmas. Collisional ionization for atoms and ions of H to Zn

X-ray emission from thin plasmas. Collisional ionization for atoms and ions of H to Zn

... thermal X-ray radiation from hot optically thin plasmas, it is important to have accurate estimates of the ion frac- tions of the plasma, since the predicted line fluxes sometimes depend sensitively on the ...

22

Characterization of lacustrine iron sulfide particles with proton induced X ray emission

Characterization of lacustrine iron sulfide particles with proton induced X ray emission

... The observed elemental ratios suggest that black iron sulfide particles are formed from sinking iron oxide particles originating higher in the water column in a sulfide-free zone.. Some [r] ...

8

Numerical estimation of lunar X ray emission for X ray spectrometer onboard SELENE

Numerical estimation of lunar X ray emission for X ray spectrometer onboard SELENE

... The X-ray fluorescence generation is sta- tistically isotropic so that the formula is independent of the emission angle and is divided by 4π for yield per unit solid ...3.1.2 X-ray ...

10

X-ray emission as a diagnostic from pseudospark-sourced electron beams

X-ray emission as a diagnostic from pseudospark-sourced electron beams

... produce X- rays. The uses of this are two-fold. Firstly, the generation of X-rays can be used as an indicator of discharge and subsequent electron beam generation, a diagnostic method which is relatively ...

9

Show all 10000 documents...

Related subjects