What does the EUV and thin film group do?
... http://wave.xray.mpe.mpg.de/roentgen/roentgen-1.gif ...
... http://wave.xray.mpe.mpg.de/roentgen/roentgen-1.gif ...
Composition of the Chandra ACIS contaminant
... H.L.M.: E-mail: [email protected], Telephone: 1 617 253 8573 ...
... H.L.M.: E-mail: [email protected], Telephone: 1 617 253 8573 ...
JOINT DISCUSSION mirror which reflects the light of the primary
... Three balloon flights were carried out last summer, all three at an altitude of 80,000 ft (25 km, air pressure 4 % of ground pressure). The first of these flights had the purpose only of testing the pointing mechanism, but in the second and third flight the full telescope was flown. Eight thousand p ...
... Three balloon flights were carried out last summer, all three at an altitude of 80,000 ft (25 km, air pressure 4 % of ground pressure). The first of these flights had the purpose only of testing the pointing mechanism, but in the second and third flight the full telescope was flown. Eight thousand p ...
Chapter 2: Units - Center for Astrophysics and Space Astronomy CASA
... where ε is the energy of the quantum in ergs, ν is the frequency in oscillations per second, and h is Planck’s constant (6.6x10-27 erg seconds). Because of the simple relationship, it is equally valid to refer to a photon by its energy as well as its frequency or wavelength. Astrophysicists use all ...
... where ε is the energy of the quantum in ergs, ν is the frequency in oscillations per second, and h is Planck’s constant (6.6x10-27 erg seconds). Because of the simple relationship, it is equally valid to refer to a photon by its energy as well as its frequency or wavelength. Astrophysicists use all ...
unit a activity 4d - telescopes - student readings-klh.ss
... telescopes already in existence. This happened recently due to an accident with satellite equipment. The Compton Gamma Ray Observatory (left) once stored data on its satellite tape recorders and dumped data about gamma-ray bursts down to ground stations several times each day. However, in 1992 the t ...
... telescopes already in existence. This happened recently due to an accident with satellite equipment. The Compton Gamma Ray Observatory (left) once stored data on its satellite tape recorders and dumped data about gamma-ray bursts down to ground stations several times each day. However, in 1992 the t ...
15 Years of Science with XMM-Newton
... with XMM-Newton and GMRT and LOFAR: Detection of synchronous switching in the radio and x-ray emission properties When the pulsar is in a sustained radio"bright" mode, the x-rays show only an unpulsed, nonthermal component When the pulsar is in a radio-"quiet" mode, the x-ray luminosity more t ...
... with XMM-Newton and GMRT and LOFAR: Detection of synchronous switching in the radio and x-ray emission properties When the pulsar is in a sustained radio"bright" mode, the x-rays show only an unpulsed, nonthermal component When the pulsar is in a radio-"quiet" mode, the x-ray luminosity more t ...
q - Indico
... Charged particles traversing matter leaving excited atoms, electron or holes and ions behind. These can be detected using either excitation or ionization. Excitation Photons emitted by excited atoms can be detected by photomultipliers or semiconductor photon detectors ...
... Charged particles traversing matter leaving excited atoms, electron or holes and ions behind. These can be detected using either excitation or ionization. Excitation Photons emitted by excited atoms can be detected by photomultipliers or semiconductor photon detectors ...
ppt file - Particle Theory
... The experimenters had hoped to see the QED effect (“light-by-light” scattering), but their sensitivity was not good enough by many orders of magnitude Their value of ga is ostensibly excluded already by 4 orders of magnitude, by CAST, and stellar evolution (stars would live only a few thousand yea ...
... The experimenters had hoped to see the QED effect (“light-by-light” scattering), but their sensitivity was not good enough by many orders of magnitude Their value of ga is ostensibly excluded already by 4 orders of magnitude, by CAST, and stellar evolution (stars would live only a few thousand yea ...
2 Galactic radiation fields
... and molecular gas, etc.) depends on the rate at which molecules are photodissociated and atoms are photoionized by the radiation field. – The thermal state of the gas depends on the photoionization rate, and also on the rate of a process known as photoelectric heating: the ejection of an energetic e ...
... and molecular gas, etc.) depends on the rate at which molecules are photodissociated and atoms are photoionized by the radiation field. – The thermal state of the gas depends on the photoionization rate, and also on the rate of a process known as photoelectric heating: the ejection of an energetic e ...
Transparencies - Rencontres de Moriond
... Who is the progenitor ? The observations of GRB afterglows shown that the bursts with an optical counterpart are localized in the stars formation regions of far galaxies, and that the energy released is between 1051 and 1054 erg if the emission has spherical symmetry. Two families of progenitor coul ...
... Who is the progenitor ? The observations of GRB afterglows shown that the bursts with an optical counterpart are localized in the stars formation regions of far galaxies, and that the energy released is between 1051 and 1054 erg if the emission has spherical symmetry. Two families of progenitor coul ...
Slide 1
... • The readout integrated circuit (ROIC) has been designed by a team headed by Dr. Zeljko Ignjatovic at the University of Rochester and is being fabricated by an outside facility. • The detector design is currently under fabrication at RIT in the Semiconductor and Microsystems Fabrication Laboratory, ...
... • The readout integrated circuit (ROIC) has been designed by a team headed by Dr. Zeljko Ignjatovic at the University of Rochester and is being fabricated by an outside facility. • The detector design is currently under fabrication at RIT in the Semiconductor and Microsystems Fabrication Laboratory, ...
Notes - Michigan State University
... Nuclear properties that are relevant for reaction rates: Nucleons in the nucleus can only have discrete energies. Therefore, the nucleus as a whole can be excited into discrete energy levels (excited states) Excitation energy (MeV) Spin ...
... Nuclear properties that are relevant for reaction rates: Nucleons in the nucleus can only have discrete energies. Therefore, the nucleus as a whole can be excited into discrete energy levels (excited states) Excitation energy (MeV) Spin ...
Broad Relativistic Iron Lines from Neutron Star LMXBs
... signal-to-noise for both burst oscillations and X-ray spectrum. Note that RXTE-PCA operated with much lesser area during most of its lifetime. (3) Most promising sources are known from RXTE observations. (4) Astrosat will model the burst and non-burst emissions in a much larger (than RXTE) photon-en ...
... signal-to-noise for both burst oscillations and X-ray spectrum. Note that RXTE-PCA operated with much lesser area during most of its lifetime. (3) Most promising sources are known from RXTE observations. (4) Astrosat will model the burst and non-burst emissions in a much larger (than RXTE) photon-en ...
McConnell XGPolarimetry SSE
... universe. Extensive multi-wavelength observations of GRBs and their long-wavelength Figure 4: Two types of GRB models [5]: (a) the physical afterglows have revealed the following model: synchrotron emission from an ordered magnetic field; physical picture [30-32]: long-duration (typi- (b) the geomet ...
... universe. Extensive multi-wavelength observations of GRBs and their long-wavelength Figure 4: Two types of GRB models [5]: (a) the physical afterglows have revealed the following model: synchrotron emission from an ordered magnetic field; physical picture [30-32]: long-duration (typi- (b) the geomet ...
The Electromagnetic Spectrum
... Making waves with a rope will help you understand how the parts of the electromagnetic spectrum travel. 1. With a partner holding one end of the rope, stretch the rope tightly along the floor. To create waves with the rope, move your hand back and forth sideways. 2. Stand a folded piece of paper bes ...
... Making waves with a rope will help you understand how the parts of the electromagnetic spectrum travel. 1. With a partner holding one end of the rope, stretch the rope tightly along the floor. To create waves with the rope, move your hand back and forth sideways. 2. Stand a folded piece of paper bes ...
A propelling neutron star in the enigmatic Be-star γ Cassiopeia
... However, for matter to reach the NS surface, it should penetrate through its magnetosphere with the characteristic radius RA ∼ 108 –109 cm, defined by the pressure balance between the ambient matter and the magnetic field (see equation 7). Besides the magnetospheric barrier, the centrifugal barrier ...
... However, for matter to reach the NS surface, it should penetrate through its magnetosphere with the characteristic radius RA ∼ 108 –109 cm, defined by the pressure balance between the ambient matter and the magnetic field (see equation 7). Besides the magnetospheric barrier, the centrifugal barrier ...
Nuclear Binding Energy
... The binding energy curve is obtained by dividing the total nuclear binding energy by the number of nucleons. The fact peak in the binding energy curve near iron means that either the breakup of heavier nuclei (fission) or the combining of lighter nuclei (fusion) will yield nuclei which are more tigh ...
... The binding energy curve is obtained by dividing the total nuclear binding energy by the number of nucleons. The fact peak in the binding energy curve near iron means that either the breakup of heavier nuclei (fission) or the combining of lighter nuclei (fusion) will yield nuclei which are more tigh ...
Air Cherenkov Methods in Cosmic Rays: A Review
... Investigations of Extensive Air Showers In these experiments, carried out in the Pamirs Mountains, the idea of calorimetric measurements of the cascade energy by recording its Cherenkov radiation was realized. Experimental ratio between the cascade energy and the observed number of particles was me ...
... Investigations of Extensive Air Showers In these experiments, carried out in the Pamirs Mountains, the idea of calorimetric measurements of the cascade energy by recording its Cherenkov radiation was realized. Experimental ratio between the cascade energy and the observed number of particles was me ...
Slide 1
... Intensity of visible (0.4 - 0.6 micron) light from a photographic survey. Due to the strong obscuring effect of interstellar dust,the light is primarily from stars within a few thousand light-years of the Sun, nearby on the scale of the Milky Way. The widespread bright red regions are produced by gl ...
... Intensity of visible (0.4 - 0.6 micron) light from a photographic survey. Due to the strong obscuring effect of interstellar dust,the light is primarily from stars within a few thousand light-years of the Sun, nearby on the scale of the Milky Way. The widespread bright red regions are produced by gl ...
Document
... Blazars are powerful gamma-ray sources. The most powerful of them have equivalent isotropic luminosity 1049 erg/s. Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been de ...
... Blazars are powerful gamma-ray sources. The most powerful of them have equivalent isotropic luminosity 1049 erg/s. Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been de ...
Probing the high- energy universe What is the Cherenkov Telescope
... fainter than the total starlight, so large mirrors are required to collect it, and because the flashes last only a few billionths of a second, high-speed ‘cameras’ are used to record them. CTA will achieve its unprecedented level of sensitivity to gamma rays of energies from below 50 GeV to above 10 ...
... fainter than the total starlight, so large mirrors are required to collect it, and because the flashes last only a few billionths of a second, high-speed ‘cameras’ are used to record them. CTA will achieve its unprecedented level of sensitivity to gamma rays of energies from below 50 GeV to above 10 ...
The current status of ”Troitsk nu-mass”
... experiment are the Windowless Gaseous Tritium Source (WGTS) and the Electrostatic Spectrometer with Magnetic Adiabatic Collimation (ESMAC). Gaseous source, while being very complex to manufacture and maintain, is needed to avoid solid state effects such as source charging, neighbor excitation and ba ...
... experiment are the Windowless Gaseous Tritium Source (WGTS) and the Electrostatic Spectrometer with Magnetic Adiabatic Collimation (ESMAC). Gaseous source, while being very complex to manufacture and maintain, is needed to avoid solid state effects such as source charging, neighbor excitation and ba ...
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.