“Stages” of Imaging Systems
... Issues in Astronomical Imaging • (Differences between astronomical and “normal” imaging) – Distances between objects and Earth – Intrinsic “brightness” of object • generally very faint ⇒ large image collectors ...
... Issues in Astronomical Imaging • (Differences between astronomical and “normal” imaging) – Distances between objects and Earth – Intrinsic “brightness” of object • generally very faint ⇒ large image collectors ...
Telescopes and Spacecraft
... Quality and light gathering ability (not magnification) are the most important attributes of a telescope ...
... Quality and light gathering ability (not magnification) are the most important attributes of a telescope ...
X-Ray Binaries
... . accreting black holes emit a softer X-ray spectrum since the inner edge of the accretion disc is larger for a more massive black hole . Rinner is determined by the last stable orbit for particles: Rstable = 3RSchwarzschild = 9 km (MBH/ M¯) • need to prove the existence of an event horizon . e.g. b ...
... . accreting black holes emit a softer X-ray spectrum since the inner edge of the accretion disc is larger for a more massive black hole . Rinner is determined by the last stable orbit for particles: Rstable = 3RSchwarzschild = 9 km (MBH/ M¯) • need to prove the existence of an event horizon . e.g. b ...
The Sun (continued). - Department of Physics and Astronomy
... Most contemporary telescopes are reflectors Primary mirror gather and focuses the light Secondary mirror reflects the light to a convenient location ...
... Most contemporary telescopes are reflectors Primary mirror gather and focuses the light Secondary mirror reflects the light to a convenient location ...
Evidence for micrometeoroid damage in the pn
... This is roughly 108 times more than we would expect the detector through the X-ray mirror system. This is not from a 6 MeV alpha particle and about 106 more than possible on straight paths but by scattering at the miran iron atom of 1 GeV (see Bragg curves simulated with ror surface. In principle, a ...
... This is roughly 108 times more than we would expect the detector through the X-ray mirror system. This is not from a 6 MeV alpha particle and about 106 more than possible on straight paths but by scattering at the miran iron atom of 1 GeV (see Bragg curves simulated with ror surface. In principle, a ...
The ADAHELI (ADvanced Astronomy for HELIophysics) solar mission
... Cacciani and now being further developed at NASA/JPL) in the potassium 770 nm and sodium 589 nm lines. The instrument will provide simultaneous dopplergrams, intensity images and longitudinal magnetic flux images at two heights in the solar atmosphere. EIRS is a compact two channel spectrometer oper ...
... Cacciani and now being further developed at NASA/JPL) in the potassium 770 nm and sodium 589 nm lines. The instrument will provide simultaneous dopplergrams, intensity images and longitudinal magnetic flux images at two heights in the solar atmosphere. EIRS is a compact two channel spectrometer oper ...
Activity: Multiwavelength Bingo - Chandra X
... Activity: Multiwavelength Bingo background: Almost everything that we know about distant objects in the Universe comes from studying the light that is emitted or reflected by them. The entire range of energies of light is called the electromagnetic spectrum. Our eyes are sensitive only to a narrow b ...
... Activity: Multiwavelength Bingo background: Almost everything that we know about distant objects in the Universe comes from studying the light that is emitted or reflected by them. The entire range of energies of light is called the electromagnetic spectrum. Our eyes are sensitive only to a narrow b ...
What is Synchrotron Radiation?
... X-ray calibration: Soft X-ray Telescope ASTROSAT :One of the most ambitious space astronomy programme initiated by Space Science Community in India. Payload of soft x-ray imaging telescope (SXT) sensitive to 0.3 to 8 keV is planned. Performance of SXT grazing incidence foil mirrors evaluated using ...
... X-ray calibration: Soft X-ray Telescope ASTROSAT :One of the most ambitious space astronomy programme initiated by Space Science Community in India. Payload of soft x-ray imaging telescope (SXT) sensitive to 0.3 to 8 keV is planned. Performance of SXT grazing incidence foil mirrors evaluated using ...
Solar Storms Sun Struck The space-weather forecast for the next few
... 1859 event could take out the entire grid, sending hundreds of millions of people back to a preelectric way of life for weeks or perhaps months on end. In Kappenman’s words, we’re “playing Russian roulette with the sun.” ...
... 1859 event could take out the entire grid, sending hundreds of millions of people back to a preelectric way of life for weeks or perhaps months on end. In Kappenman’s words, we’re “playing Russian roulette with the sun.” ...
- Eagles Fare Restaurant
... stages of stages in the life of stars can be seen in our Galaxy using telescopes operating not only in the optical, but from radio up to x-ray wavelengths. Our Milky Way is just one of countless millions of galaxies that have been observed in the heavens. Large scale structures consisting of cluster ...
... stages of stages in the life of stars can be seen in our Galaxy using telescopes operating not only in the optical, but from radio up to x-ray wavelengths. Our Milky Way is just one of countless millions of galaxies that have been observed in the heavens. Large scale structures consisting of cluster ...
Modern Day astronomical tools
... them are really hot. Spitzer has used the last of the liquid helium coolant that has kept its instruments chilled. Spitzer's instruments will be able to keep going for another two years, meanwhile, the European Space Agency's Herschel telescope is designed to pick up where Spitzer left off. ...
... them are really hot. Spitzer has used the last of the liquid helium coolant that has kept its instruments chilled. Spitzer's instruments will be able to keep going for another two years, meanwhile, the European Space Agency's Herschel telescope is designed to pick up where Spitzer left off. ...
ML 5037-40
... 80 mm and focal length of 2000 mm. Mo/Si multi-layers were coated on the mirror surface and the reflectivity has been measured at 13 positions. plotted in the figure 7. ...
... 80 mm and focal length of 2000 mm. Mo/Si multi-layers were coated on the mirror surface and the reflectivity has been measured at 13 positions. plotted in the figure 7. ...
The Swansong of Stars Orbiting Massive Black Holes
... LISA will be able to detect compact objects that spiral into a MBH by GW emission from up to a distance of a Gpc. The signal is expected to be weak. To detect it, it is necessary to know in advance the shape of the wave trains, and to do that, it is necessary to know the eccentricity of the inspiral ...
... LISA will be able to detect compact objects that spiral into a MBH by GW emission from up to a distance of a Gpc. The signal is expected to be weak. To detect it, it is necessary to know in advance the shape of the wave trains, and to do that, it is necessary to know the eccentricity of the inspiral ...
Measuring the Sun - Faculty Web Sites
... Sun Facts •Earth-Sun Distance: 150,000,000 kilometers (93,000,000 miles) = 1 A.U. (Astronomical Unit) •Mass: Sun contains 99%+ of the solar system mass. ...
... Sun Facts •Earth-Sun Distance: 150,000,000 kilometers (93,000,000 miles) = 1 A.U. (Astronomical Unit) •Mass: Sun contains 99%+ of the solar system mass. ...
ACE-OSS-1998
... Correlations with solar activity are being investigated. The S3DPU engineer at TUB, Germany, is involved in these efforts. The resets appear to be caused by memory corruption in the S3DPU, but the cause of the corruption is not yet known. ...
... Correlations with solar activity are being investigated. The S3DPU engineer at TUB, Germany, is involved in these efforts. The resets appear to be caused by memory corruption in the S3DPU, but the cause of the corruption is not yet known. ...
X-ray output should be time variable
... The ROSAT PSPC is a gas proportional counter with a twodegree field of view and some very modest energy resolution (each photon is tagged with an approximate energy, as well as a position and arrival time in the detector) There are numerous sites of Xray emission on the sun. Each one evolves in time ...
... The ROSAT PSPC is a gas proportional counter with a twodegree field of view and some very modest energy resolution (each photon is tagged with an approximate energy, as well as a position and arrival time in the detector) There are numerous sites of Xray emission on the sun. Each one evolves in time ...
The Science of Solar B Transient phenomena
... current (and future) theories in order to have a deeper understanding of this fundamental process. ...
... current (and future) theories in order to have a deeper understanding of this fundamental process. ...
Document
... – Monitor energy range: 10 keV - 20 MeV – Monitor FOV of 8 sr (shall overlap that of the LAT) – Notify observers world-wide: • Recognize bursts in realtime • Determine burst positions to few degree accuracy • Transmit (within seconds) GRB coordinates to the ground • Re-point the main instrument to G ...
... – Monitor energy range: 10 keV - 20 MeV – Monitor FOV of 8 sr (shall overlap that of the LAT) – Notify observers world-wide: • Recognize bursts in realtime • Determine burst positions to few degree accuracy • Transmit (within seconds) GRB coordinates to the ground • Re-point the main instrument to G ...