![HE and VHE emission from X-ray binaries](http://s1.studyres.com/store/data/003808581_1-9b5771a01a10e370108eae2a88bb6b9b-300x300.png)
HE and VHE emission from X-ray binaries
... • Models from radio to VHE: ➢Released 1014 eV protons from the jet that diffuse through and interact with the ISM. ➢Computed the broadband spectrum of the emission coming out from the pp primary interactions (γ-rays produced by neutral pion decay) as well as the emission (synchrotron, bremsstrahlun ...
... • Models from radio to VHE: ➢Released 1014 eV protons from the jet that diffuse through and interact with the ISM. ➢Computed the broadband spectrum of the emission coming out from the pp primary interactions (γ-rays produced by neutral pion decay) as well as the emission (synchrotron, bremsstrahlun ...
404.06 Stephen Drake
... • New study of optical photometry: what is the cause of the periodic variation and what is the ‘true’ period? • Magnetic field measurement would be very desirable • Is the (wide) binarity of this system a factor in flare properties? ...
... • New study of optical photometry: what is the cause of the periodic variation and what is the ‘true’ period? • Magnetic field measurement would be very desirable • Is the (wide) binarity of this system a factor in flare properties? ...
Atomic, Molecular and Optical Science
... The main experimental chamber of the AMO instrumentation includes the majority of the experimental capabilities. A skimmed pulsed gas jet is used to introduce sample gas into the chamber where it will be ionized/excited by X-rays from the LCLS. Several spectrometers will detect the results of the in ...
... The main experimental chamber of the AMO instrumentation includes the majority of the experimental capabilities. A skimmed pulsed gas jet is used to introduce sample gas into the chamber where it will be ionized/excited by X-rays from the LCLS. Several spectrometers will detect the results of the in ...
Light and telescopes
... 6. Explain how adaptive optics is used to improve the "seeing" of many ground-based optical telescopes and how interferometry is used to improve the resolution of radio telescopes. 1. Different colors of light correspond to electromagnetic waves with different _____. A. speeds B. amplitudes C. inten ...
... 6. Explain how adaptive optics is used to improve the "seeing" of many ground-based optical telescopes and how interferometry is used to improve the resolution of radio telescopes. 1. Different colors of light correspond to electromagnetic waves with different _____. A. speeds B. amplitudes C. inten ...
Living alongside Monsters: Matter around Central Massive Black Holes Q. Daniel Wang
... relative amplitude to the Xray flares detected in Sgr A*. • Both phenomena may be caused by episodic ejection of relativistic plasma blobs (“jets”) – analogous to coronal mass ejection in the Sun. • Activities after the outburst, Empirical and theoretical may also due to many small predictions for ...
... relative amplitude to the Xray flares detected in Sgr A*. • Both phenomena may be caused by episodic ejection of relativistic plasma blobs (“jets”) – analogous to coronal mass ejection in the Sun. • Activities after the outburst, Empirical and theoretical may also due to many small predictions for ...
Summary - Chandra X
... shock structure. Reasonable densities and temperatures inferred, but simple 1D post-shock settling models do NOT reproduce observations. • Theory Informed by Solar Corona (Cranmer) Blobs in accretion stream splash into star, generating waves which shake magnetic field lines. Alfven wave turbulence o ...
... shock structure. Reasonable densities and temperatures inferred, but simple 1D post-shock settling models do NOT reproduce observations. • Theory Informed by Solar Corona (Cranmer) Blobs in accretion stream splash into star, generating waves which shake magnetic field lines. Alfven wave turbulence o ...
Energy loss of deuterons in 3He gas: a threshold effect
... To our knowledge, a relatively sharp threshold effect in the stopping power behavior of ions in matter - as seen in Fig. 5 - has not been predicted (3 and references therein). A threshold effect has been discussed for the stopping power of protons in Ne gas 14, however these theoretical studies ...
... To our knowledge, a relatively sharp threshold effect in the stopping power behavior of ions in matter - as seen in Fig. 5 - has not been predicted (3 and references therein). A threshold effect has been discussed for the stopping power of protons in Ne gas 14, however these theoretical studies ...
Northern rim
... Suzaku XIS-BI (high efficiency and good energy resolution) is the best instrument to resolve this problem ! ...
... Suzaku XIS-BI (high efficiency and good energy resolution) is the best instrument to resolve this problem ! ...
PPT - Chandra X
... Right: Light curve of Algol (ObsID 604, binned at intervals of 1200 s (blue) and 4000 s (red) ...
... Right: Light curve of Algol (ObsID 604, binned at intervals of 1200 s (blue) and 4000 s (red) ...
Active X-ray Optics - High Energy Astrophysics Division
... physical limits: the Chandra mirror would have been diffraction limited at ∼20 milli-arcsec (van Speybroeck 2000, private communication), while the thermal line widths of 1 keV temperature plasmas are of order 100 km s−1 , so the ’thermal limit’ to X-ray spectroscopy is λ/∆λ ∼6000 (Elvis 2001). More ...
... physical limits: the Chandra mirror would have been diffraction limited at ∼20 milli-arcsec (van Speybroeck 2000, private communication), while the thermal line widths of 1 keV temperature plasmas are of order 100 km s−1 , so the ’thermal limit’ to X-ray spectroscopy is λ/∆λ ∼6000 (Elvis 2001). More ...
Neutron Star Crustal Emission: a basic, unanswered question.
... Lai & Salpeter (1997), Lai (2001): NSs may be left without an atmosphere if they are cool enough. Onset of a phase transition A gaseous atmosphere turns into a solid when T < Tcrit(B) ...
... Lai & Salpeter (1997), Lai (2001): NSs may be left without an atmosphere if they are cool enough. Onset of a phase transition A gaseous atmosphere turns into a solid when T < Tcrit(B) ...
Conversion of Photon Energy to Other Forms
... will cross from the n region into the p region. The result is a very thin region (< 1µm) which has an electric field built in. When a photon is absorbed in this depletion region, the electron is rapidly driven into the n material and the hole is driven into the p material by the electric field. Atta ...
... will cross from the n region into the p region. The result is a very thin region (< 1µm) which has an electric field built in. When a photon is absorbed in this depletion region, the electron is rapidly driven into the n material and the hole is driven into the p material by the electric field. Atta ...
Today`s Powerpoint
... Explanation: "beamed" radiation from rapidly spinning neutron star. Usually neutron stars are pulsars for 107 years after supernova. ...
... Explanation: "beamed" radiation from rapidly spinning neutron star. Usually neutron stars are pulsars for 107 years after supernova. ...
Extreme Physics Explorer - High Energy Astrophysics
... Polarimetry gives the orientation of an accretion disk on th sky The Polarization angle from an accretion disk in the ‘Newtonian’ case is either parallel to the major axis of the sky-projected disk (positive) or parallel to the skyprojected disk symmetry axis (negative) ...
... Polarimetry gives the orientation of an accretion disk on th sky The Polarization angle from an accretion disk in the ‘Newtonian’ case is either parallel to the major axis of the sky-projected disk (positive) or parallel to the skyprojected disk symmetry axis (negative) ...
Functional tests of modular elements of segmented optics for X
... intense Kα doublet centered at 4.51 keV, plus the bremsstrahlung continuum emission. Alternatively, a more performing - but expensive - µfocus source might be used: advantages would be a smaller source, higher flux intensity, and no need of water-cooling. The source size is then reduced to 0.1 mm by ...
... intense Kα doublet centered at 4.51 keV, plus the bremsstrahlung continuum emission. Alternatively, a more performing - but expensive - µfocus source might be used: advantages would be a smaller source, higher flux intensity, and no need of water-cooling. The source size is then reduced to 0.1 mm by ...
X-ray Polarimetry - XMM-Newton Science Operations Centre
... • X-rays from nebula 19.2%±1.0% polarized at 156.4°±1.4° at 2.6 keV; 19.5%±2.8% polarized at 152.6°±4.0° at 5.2 keV (Weisskopf et al. 1978) • γ-rays: Off pulse and bridge emission polarized at 122.0°±7.7° (Forot et al. 2008) ...
... • X-rays from nebula 19.2%±1.0% polarized at 156.4°±1.4° at 2.6 keV; 19.5%±2.8% polarized at 152.6°±4.0° at 5.2 keV (Weisskopf et al. 1978) • γ-rays: Off pulse and bridge emission polarized at 122.0°±7.7° (Forot et al. 2008) ...
Document
... INTRODUCTIONu The hot, diffuse, x-ray emitting interstellar medium of the Milky Way Galaxy appears almost featureless, unless it is observed in the soft x-ray band. In 1995, complex structures, visible only between 0.1 and 2.0keV, were revealed by the ROSAT all-sky survey. The XMM-Newton observatory ...
... INTRODUCTIONu The hot, diffuse, x-ray emitting interstellar medium of the Milky Way Galaxy appears almost featureless, unless it is observed in the soft x-ray band. In 1995, complex structures, visible only between 0.1 and 2.0keV, were revealed by the ROSAT all-sky survey. The XMM-Newton observatory ...
ppt
... GRB association with SNe is confirmed in at least a few cases ( GRB0300329-Sn2003dh ) Physics of jet creation, acceleration, propagation and evolution to be understood Correlations of MeV energy with global jet parameters imply MeV to be dominant However in the standard scenario a large fraction of ...
... GRB association with SNe is confirmed in at least a few cases ( GRB0300329-Sn2003dh ) Physics of jet creation, acceleration, propagation and evolution to be understood Correlations of MeV energy with global jet parameters imply MeV to be dominant However in the standard scenario a large fraction of ...
Design and Preparation for a Balloon
... good compromise between of in-field assembly X-ray escape and detection Low internal background. • Excellent timing (50 ns) & energy resolution (2 keV – much better than NaI, but modest for Si) 2 X-ray coincidence sufficient (previous designs used 3 X-rays) • Relatively course pixels (8 cm2) ...
... good compromise between of in-field assembly X-ray escape and detection Low internal background. • Excellent timing (50 ns) & energy resolution (2 keV – much better than NaI, but modest for Si) 2 X-ray coincidence sufficient (previous designs used 3 X-rays) • Relatively course pixels (8 cm2) ...
Using the Electromagnetic Spectrum
... time. By giving us a snapshot of the temperature roughly every two years for the past decade. ...
... time. By giving us a snapshot of the temperature roughly every two years for the past decade. ...
Supernovae
... • Thus a stalled shock wave is revived by neutrino heating. • Boundary at ~150 km: – inside → matter falls into core – outside → matter is expelled. ...
... • Thus a stalled shock wave is revived by neutrino heating. • Boundary at ~150 km: – inside → matter falls into core – outside → matter is expelled. ...
7 November 2012 X-ray Astrophysics
... First, let’s be absolutely clear about what is meant by ‘X-ray light’. A prism can be used to split visible light into the constituent colours of the rainbow to create what is known as a spectrum. Different colours are characterised by their wavelength: if we view light as travelling in the form of ...
... First, let’s be absolutely clear about what is meant by ‘X-ray light’. A prism can be used to split visible light into the constituent colours of the rainbow to create what is known as a spectrum. Different colours are characterised by their wavelength: if we view light as travelling in the form of ...
ppt
... for the S-Z and X-ray domains, we must have – or determine – mass-observable relations at any z ...
... for the S-Z and X-ray domains, we must have – or determine – mass-observable relations at any z ...
LXeGRIT: The Prototype of a New Gamma Ray Telescope
... began to hypothesize that there were processes in the universe that would create these high energy waves. It was not until the 1960’s that they developed adequate technology to detect them. Since the first γ-ray detection by the Explorer XI Satellite in 1961, which detected fewer than 100 cosmic γra ...
... began to hypothesize that there were processes in the universe that would create these high energy waves. It was not until the 1960’s that they developed adequate technology to detect them. Since the first γ-ray detection by the Explorer XI Satellite in 1961, which detected fewer than 100 cosmic γra ...
X-ray astronomy detector
![](https://commons.wikimedia.org/wiki/Special:FilePath/Ill-2_O3.jpg?width=300)
X-ray astronomy detectors are instruments that detect X-rays for use in the study of X-ray astronomy.X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray emission from celestial objects. X-radiation is absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites. X-ray astronomy is part of space science.X-ray astronomy detectors have been designed and configured primarily for energy and occasionally for wavelength detection using a variety of techniques usually limited to the technology of the time.