Comparative Performance of a 30m
... mass dynamics within individual Galaxies • Local variations in starformation rate Multiple IFU spectroscopy R ~ 5,000 – 10,000 GSMT 3 hour, 3s limit at R=5,000 0.1”x0.1” IFU pixel (sub-kpc scale structures) ...
... mass dynamics within individual Galaxies • Local variations in starformation rate Multiple IFU spectroscopy R ~ 5,000 – 10,000 GSMT 3 hour, 3s limit at R=5,000 0.1”x0.1” IFU pixel (sub-kpc scale structures) ...
SPACE OPTICS WITH SILICON WAFERS AND SLUMPED GLASS
... microroughness of glass foils and most of other alternative mirror materials and substrates. The flatness (in the sense of the deviation of the upper surface of a free standing Si wafer from a plane) of commercially available Si wafers was however found not to be optimal for use in high-quality (ord ...
... microroughness of glass foils and most of other alternative mirror materials and substrates. The flatness (in the sense of the deviation of the upper surface of a free standing Si wafer from a plane) of commercially available Si wafers was however found not to be optimal for use in high-quality (ord ...
IGR J18483-0311: a new intermediate supergiant fast X
... optical and NIR magnitudes are listed in Table 1. It is worth noting that our optical magnitudes are about 1 magnitude lower than those given in the USNO catalogue, this difference probably due to the strong uncertainty (≥ 1 magnitude) of the USNO magnitudes for very faint sources (≥17 in the B band ...
... optical and NIR magnitudes are listed in Table 1. It is worth noting that our optical magnitudes are about 1 magnitude lower than those given in the USNO catalogue, this difference probably due to the strong uncertainty (≥ 1 magnitude) of the USNO magnitudes for very faint sources (≥17 in the B band ...
Fluorine nucleosynthesis
... We selected Fe as a substrate for our targets. Targets were tilted at 75 degrees with respect to the fluorine beam. This reduced the depth of implanted fluorine in the substrate. The beam was wobbled in order to get a uniform implanted surface. The implantation energy was 36 keV. The energy of the b ...
... We selected Fe as a substrate for our targets. Targets were tilted at 75 degrees with respect to the fluorine beam. This reduced the depth of implanted fluorine in the substrate. The beam was wobbled in order to get a uniform implanted surface. The implantation energy was 36 keV. The energy of the b ...
Astroparticle physics A.M. van den Berg () O. Scholten
... Regions on the CMB sky separated by more than 1o had no time to interact, yet their temperature is the same to 100 ppm What is needed An initial condition of the Universe with a temperature between 1 MeV and 1014 GeV, which is almost homogenous and has = 1 to a very high precision Summary ...
... Regions on the CMB sky separated by more than 1o had no time to interact, yet their temperature is the same to 100 ppm What is needed An initial condition of the Universe with a temperature between 1 MeV and 1014 GeV, which is almost homogenous and has = 1 to a very high precision Summary ...
Millisecond Pulsars in X-Ray Binaries - CIERA
... probably indicates that SAX J1808.4−3658 has a stronger magnetic field than the other burst oscillation sources (Chakrabarty et al. 2003), since a sufficiently strong field will suppress rotational shearing in the burning layer and may act as a restoring force. Strohmayer et al. (2003) also interpre ...
... probably indicates that SAX J1808.4−3658 has a stronger magnetic field than the other burst oscillation sources (Chakrabarty et al. 2003), since a sufficiently strong field will suppress rotational shearing in the burning layer and may act as a restoring force. Strohmayer et al. (2003) also interpre ...
Elemental Synthesis in the Universe
... Not very accurate since only reflects outer layer, oceans, atmosphere; Divided into 5-6 regions; outer layer only contains ~.5% mass Chemical fractionation has occurred; volatile elements lost Isotopic ratios should be good as chemistry the same. b. Moon Definite differences in abundances ...
... Not very accurate since only reflects outer layer, oceans, atmosphere; Divided into 5-6 regions; outer layer only contains ~.5% mass Chemical fractionation has occurred; volatile elements lost Isotopic ratios should be good as chemistry the same. b. Moon Definite differences in abundances ...
On the possibility of a helium white dwarf donor in the presumed
... As noted by Juett et al. (2003) and Nelemans et al. (2004), there is a puzzling contradiction between the characteristics (or mere presence) of these bursts and the suggested hydrogen or helium depletion in the donor stars. The bursts detected from these systems last between 10 and a few hundred sec ...
... As noted by Juett et al. (2003) and Nelemans et al. (2004), there is a puzzling contradiction between the characteristics (or mere presence) of these bursts and the suggested hydrogen or helium depletion in the donor stars. The bursts detected from these systems last between 10 and a few hundred sec ...
SiC and diamond as radiation hard semiconductor detectors
... • Basic semiconductor detector operation • Advantages of wide band gap semiconductors – Low Z Radiation hard materials SiC/D • (General) Effects of Radiation damage on semiconductor detector operation • Quantifying “radiation hardness” ...
... • Basic semiconductor detector operation • Advantages of wide band gap semiconductors – Low Z Radiation hard materials SiC/D • (General) Effects of Radiation damage on semiconductor detector operation • Quantifying “radiation hardness” ...
Raytracing the Chandra PSF Try this at Home! D. Jerius T.J. Gaetz
... Baffles Thermal-precollimator, P6 Ghost Baffle, CAP, Post-collimator Surface Non-ideal optic figures, surface micro-roughness, multilayer coating, inter-layer roughness Source Multiple sources Source geometry: images, point, disk, rectangle Arbitrary spectra ...
... Baffles Thermal-precollimator, P6 Ghost Baffle, CAP, Post-collimator Surface Non-ideal optic figures, surface micro-roughness, multilayer coating, inter-layer roughness Source Multiple sources Source geometry: images, point, disk, rectangle Arbitrary spectra ...
Neutrino Physics M. SPURIO University of Bologna and INFN
... • Most of the neutrinos produced in the sun come from the first step of the pp chain. • Their energy is so low (<0.425 MeV) very difficult to detect. • A rare side branch of the pp chain produces the "boron-8" neutrinos with a maximum energy of roughly 15MeV • These are the easiest neutrinos to o ...
... • Most of the neutrinos produced in the sun come from the first step of the pp chain. • Their energy is so low (<0.425 MeV) very difficult to detect. • A rare side branch of the pp chain produces the "boron-8" neutrinos with a maximum energy of roughly 15MeV • These are the easiest neutrinos to o ...
Galaxy / Cluster Ecosystem Ming Sun (University of Alabama in Huntsville)
... Sun + 2007 Later more embedded coronae discovered (Yamasaki+2002; Sun+2002, 2005, 2006) and the first sample in Sun+2007 ...
... Sun + 2007 Later more embedded coronae discovered (Yamasaki+2002; Sun+2002, 2005, 2006) and the first sample in Sun+2007 ...
rt16poster_yuangy
... In order to verify this method, an X-ray imaging verification test was carried out on a 5×5 cm2(100×100, 0.5mm each strip) Thick Gas Electron Multiplier (THGEM) detector, using an 8 keV Cu X-ray source with 100μm slit borad, where 200 strips were read out by 30 encoded readout channels. A manual mov ...
... In order to verify this method, an X-ray imaging verification test was carried out on a 5×5 cm2(100×100, 0.5mm each strip) Thick Gas Electron Multiplier (THGEM) detector, using an 8 keV Cu X-ray source with 100μm slit borad, where 200 strips were read out by 30 encoded readout channels. A manual mov ...
Review Sheet: Electromagnetic Spectrum and Telescopes
... 43. “When” are we seeing when we look out into space? 44. How far into the past do we see when we observe our sun? The Andromeda galaxy? 45. What is the primary function of a telescope? 46. In which part of the spectrum do optical telescope observe? 47. Who first used the refracting telescope to obs ...
... 43. “When” are we seeing when we look out into space? 44. How far into the past do we see when we observe our sun? The Andromeda galaxy? 45. What is the primary function of a telescope? 46. In which part of the spectrum do optical telescope observe? 47. Who first used the refracting telescope to obs ...
GRBItalySABER
... GRB have 108 more power than the required (experiment) one Stochastic resonance and formation of plasma wave GRB is not coherent but have more power than needed. Can the extra power supply coherence? ...
... GRB have 108 more power than the required (experiment) one Stochastic resonance and formation of plasma wave GRB is not coherent but have more power than needed. Can the extra power supply coherence? ...
Light and Telescopes II
... To protect the sensitive electronic amplifiers from overheating by sunlight. To improve their poor resolving power. To improve their poor magnifying power. ...
... To protect the sensitive electronic amplifiers from overheating by sunlight. To improve their poor resolving power. To improve their poor magnifying power. ...
This presentation
... ultraviolet and X-rays. They are produced by extreme forces of energy and by atomic decay. The COMPTEL catalog comprises 63 gamma-ray sources. Thirty-two of these are steady sources, such as neutron stars and black hole candidates; the remaining 31 are mysterious gamma-ray bursts, which outshine the ...
... ultraviolet and X-rays. They are produced by extreme forces of energy and by atomic decay. The COMPTEL catalog comprises 63 gamma-ray sources. Thirty-two of these are steady sources, such as neutron stars and black hole candidates; the remaining 31 are mysterious gamma-ray bursts, which outshine the ...
A magnetic diverter for charged particle background rejection
... higher grasp as Chandra, the proton irradiation on the MOS-CCD would have been much higher if it were not partially obstructed by the RGS gratings, without which the lifetime of MOS CCDs would have been limited to 1 day10! Even if Newton-XMM’s CCDs are coated with protective layers (aluminum, polypr ...
... higher grasp as Chandra, the proton irradiation on the MOS-CCD would have been much higher if it were not partially obstructed by the RGS gratings, without which the lifetime of MOS CCDs would have been limited to 1 day10! Even if Newton-XMM’s CCDs are coated with protective layers (aluminum, polypr ...
Characterizing Electron Bombardment of Europa`s Surface by
... effects of the corotation electric field and drifts principally due to the effects of field line curvature and gradients in the magnetic field strength. In the Jovian system, the net longitudinal motion for electrons with energies below about 25 MeV is in the prograde direction with respect to Eurap ...
... effects of the corotation electric field and drifts principally due to the effects of field line curvature and gradients in the magnetic field strength. In the Jovian system, the net longitudinal motion for electrons with energies below about 25 MeV is in the prograde direction with respect to Eurap ...
2 Gamma-Ray Production and Absorption Processes
... the electrons at comparatively large distances (which are seen by γ-rays as almost independent from the nucleus). The atom is mostly ‘empty space’ for a γ-ray photon; interactions occur upon relatively low probability encounters with the nucleus or electrons. It is more appropriate to view γ-rays as ...
... the electrons at comparatively large distances (which are seen by γ-rays as almost independent from the nucleus). The atom is mostly ‘empty space’ for a γ-ray photon; interactions occur upon relatively low probability encounters with the nucleus or electrons. It is more appropriate to view γ-rays as ...
How the Stanford Linear Accelerator Center is transforming the
... Still doing what it knows best—boosting bunches of electrons to near the speed of light—the linear accelerator, or “linac” to its friends, will soon start a new stage of life. As the source of electrons for a new type of laser, it will be able to see materials, atoms, and molecules, in a completely ...
... Still doing what it knows best—boosting bunches of electrons to near the speed of light—the linear accelerator, or “linac” to its friends, will soon start a new stage of life. As the source of electrons for a new type of laser, it will be able to see materials, atoms, and molecules, in a completely ...
Chapter 4 On the possibility of a helium white dwarf donor in the
... in the flash fuel. The question is: where does the hydrogen and helium come from if not from the donor star? The problem is more severe for hydrogen than for helium because in an evolved donor star like in an ultracompact system the hydrogen can reside only in the outer layers that were lost being o ...
... in the flash fuel. The question is: where does the hydrogen and helium come from if not from the donor star? The problem is more severe for hydrogen than for helium because in an evolved donor star like in an ultracompact system the hydrogen can reside only in the outer layers that were lost being o ...
The first focused hard X-ray images of the sun with
... universe. Non-thermal particles can be detected via their X-ray or gamma-ray emission when interacting in the chromosphere or lower solar corona, by their radio emission in the solar corona and inner heliosphere, or directly in situ in interplanetary space. To date, the state of the art in solar har ...
... universe. Non-thermal particles can be detected via their X-ray or gamma-ray emission when interacting in the chromosphere or lower solar corona, by their radio emission in the solar corona and inner heliosphere, or directly in situ in interplanetary space. To date, the state of the art in solar har ...
systems - Research in Astronomy and Astrophysics
... 2008; Dodds-Eden et al. 2009; Trap et al. 2011; Eckart et al. 2012)1. The reverse is not true: only a fraction of the IR maxima correspond with an X-ray flare. The X-ray emission is universally considered to be nonthermal, and there has been some debate about whether the X-ray flares are the result ...
... 2008; Dodds-Eden et al. 2009; Trap et al. 2011; Eckart et al. 2012)1. The reverse is not true: only a fraction of the IR maxima correspond with an X-ray flare. The X-ray emission is universally considered to be nonthermal, and there has been some debate about whether the X-ray flares are the result ...
X-ray astronomy detector
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.