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... 1996 with the advent of the x-ray spacecraft BeppoSAX, built and operated by the Italian Space Agency with the participation of the Netherlands Space Agency. BeppoSAX was the first satellite to localize GRBs precisely and to discover their xray “afterglows.” The afterglow appears when the gamma-ray ...
... 1996 with the advent of the x-ray spacecraft BeppoSAX, built and operated by the Italian Space Agency with the participation of the Netherlands Space Agency. BeppoSAX was the first satellite to localize GRBs precisely and to discover their xray “afterglows.” The afterglow appears when the gamma-ray ...
Study of the Point Spread Function of AGILE
... Mipot. The satellite was launched on April 23rd, 2007, from the Indian base of Sriharikota. AGILE is the first of a new generation of high-energy space Figure 1: the AGILE payload. The gammamissions based on solid-state silicon technology, ray imager GRID and, on top of it, the hard X-ray Super-AGIL ...
... Mipot. The satellite was launched on April 23rd, 2007, from the Indian base of Sriharikota. AGILE is the first of a new generation of high-energy space Figure 1: the AGILE payload. The gammamissions based on solid-state silicon technology, ray imager GRID and, on top of it, the hard X-ray Super-AGIL ...
PPT
... Large field of view (30 arcmin diameter) 3 telescopes, each with EPIC CCD detector Measures position, arrival time and energy of each detected X-ray photon Energy range 0.15 – 15 keV Survey profits from archive observations of individual interesting objects (O stars, outburst T Tauri stars) and cali ...
... Large field of view (30 arcmin diameter) 3 telescopes, each with EPIC CCD detector Measures position, arrival time and energy of each detected X-ray photon Energy range 0.15 – 15 keV Survey profits from archive observations of individual interesting objects (O stars, outburst T Tauri stars) and cali ...
Recurring Cost ROM
... • Small sats allow for several quick iterations to achieve standardization of a sensor and its supporting architecture. • Small sats allow for in-situ testing of the sensors in their space environment for long periods of time (as would be required for lunar and Martian missions). ...
... • Small sats allow for several quick iterations to achieve standardization of a sensor and its supporting architecture. • Small sats allow for in-situ testing of the sensors in their space environment for long periods of time (as would be required for lunar and Martian missions). ...
Gravitational redshifts
... Perseus cluster core in X-rays (Chandra), overlaid with Hα (WYIN). Arc-shaped Hα filaments suggest vortex-like flows. ...
... Perseus cluster core in X-rays (Chandra), overlaid with Hα (WYIN). Arc-shaped Hα filaments suggest vortex-like flows. ...
1.3 Accretion power in astrophysics
... The infalling matter have some angular momentum ( the secondary star is orbiting the compact object when the gas comes off the star, it, too will orbit the compact object) and conservation of angular momentum prevents matter from falling directly into the black hole) X-ray Binaries, Lewin, van Parad ...
... The infalling matter have some angular momentum ( the secondary star is orbiting the compact object when the gas comes off the star, it, too will orbit the compact object) and conservation of angular momentum prevents matter from falling directly into the black hole) X-ray Binaries, Lewin, van Parad ...
15 Years of Science with XMM-Newton
... a Binary Millisecond Pulsar - XMM-Newton, radio and other X-ray satellites observations of X-ray transient IGR J18245–2452, which was first detected by INTEGRAL - First observations of accretion-powered, millisecond X-ray pulsations from a neutron star previously seen as a rotation-powered radio pul ...
... a Binary Millisecond Pulsar - XMM-Newton, radio and other X-ray satellites observations of X-ray transient IGR J18245–2452, which was first detected by INTEGRAL - First observations of accretion-powered, millisecond X-ray pulsations from a neutron star previously seen as a rotation-powered radio pul ...
SPACE OPTICS WITH SILICON WAFERS AND SLUMPED GLASS
... ones, as the volume density of glass is nearly four times less if compared with electroformed nickel layers. The glass foils may be used either as flats, or alternatively may be shaped or thermally slumped to achieve the required geometry. The thermal forming of glass is not a new technology since i ...
... ones, as the volume density of glass is nearly four times less if compared with electroformed nickel layers. The glass foils may be used either as flats, or alternatively may be shaped or thermally slumped to achieve the required geometry. The thermal forming of glass is not a new technology since i ...
Design a Space Telescope - Herschel Space Observatory
... 3) A university has approached your group to design a mission for satellite telescope in order to analyse the spectra of interstellar dust in nearby galaxies. The budget of your mission is £9 billion. You will need the appropriate instruments on board the telescope in order to carry out the mission. ...
... 3) A university has approached your group to design a mission for satellite telescope in order to analyse the spectra of interstellar dust in nearby galaxies. The budget of your mission is £9 billion. You will need the appropriate instruments on board the telescope in order to carry out the mission. ...
Accretion
... Accretion Disk Luminosity • For most accretion disks, total mass of gas in the disk is << M so we may neglect self-gravity • Hence the disk material is in circular Keplerian orbits with angular velocity WK = (GM/R3)1/2 = v/R • Energy of particle with mass m in the Kepler orbit of radius R just graz ...
... Accretion Disk Luminosity • For most accretion disks, total mass of gas in the disk is << M so we may neglect self-gravity • Hence the disk material is in circular Keplerian orbits with angular velocity WK = (GM/R3)1/2 = v/R • Energy of particle with mass m in the Kepler orbit of radius R just graz ...
AS3010: Introduction to Space Technology
... The only measurement that Piazzi could have made is the angular position of the celestial object. Thus, only this information was available to Gauss for orbit determination. However, for a satellite, range, range rate, altitude above ground, position in three dimensions (using GPS), etc. forms some ...
... The only measurement that Piazzi could have made is the angular position of the celestial object. Thus, only this information was available to Gauss for orbit determination. However, for a satellite, range, range rate, altitude above ground, position in three dimensions (using GPS), etc. forms some ...
Neutron Star Crustal Emission: a basic, unanswered question.
... iD cos S iD cos p2 P 1 2 ...
... iD cos S iD cos p2 P 1 2 ...
X-ray emission from young pulsar, PWN and SNRs
... The spectral index of synchrotron photons is between (p+1)/2 to (p+2)/2 from the slow-cooling regime to the fast-cooling regime. The photon indices of the PWNe strongly favor an electron index of p~2.2, well consistent with the theoretical predictions on particle acceleration in relativistic collisi ...
... The spectral index of synchrotron photons is between (p+1)/2 to (p+2)/2 from the slow-cooling regime to the fast-cooling regime. The photon indices of the PWNe strongly favor an electron index of p~2.2, well consistent with the theoretical predictions on particle acceleration in relativistic collisi ...
as Word doc - Virtual Observatory
... WorldWide Telescope has the concept of a study and a survey: Study – is usually a single or composite image of one object in space. Survey – is usually a comprehensive collection of data from a large area of the sky. A study is loaded from a “Collection” by clicking a thumbnail in the top panel. ...
... WorldWide Telescope has the concept of a study and a survey: Study – is usually a single or composite image of one object in space. Survey – is usually a comprehensive collection of data from a large area of the sky. A study is loaded from a “Collection” by clicking a thumbnail in the top panel. ...
WorldWide Telescope: Sky Mode
... WorldWide Telescope has the concept of a study and a survey: • Study – is usually a single or composite image of one object in space. • Survey – is usually a comprehensive collection of data from a large area of the sky. A study is loaded from a “Collection” by clicking a thumbnail in the top panel. ...
... WorldWide Telescope has the concept of a study and a survey: • Study – is usually a single or composite image of one object in space. • Survey – is usually a comprehensive collection of data from a large area of the sky. A study is loaded from a “Collection” by clicking a thumbnail in the top panel. ...
DAVID A. RIETHMILLER - Department of Physics and Astronomy
... My current research explores the hydrodynamic history of elliptical galaxies, simulating various prescriptions for interstellar gas cooling and AGN energy feedback against real X-ray observations of ellipticals. The goal is to isolate those prescriptions which may be plausible, and rule out those th ...
... My current research explores the hydrodynamic history of elliptical galaxies, simulating various prescriptions for interstellar gas cooling and AGN energy feedback against real X-ray observations of ellipticals. The goal is to isolate those prescriptions which may be plausible, and rule out those th ...
Light and Telescopes II
... Gamma-Ray Astronomy Gamma-rays: most energetic electromagnetic radiation; traces the most violent processes in the Universe The Compton Gamma-Ray Observatory ...
... Gamma-Ray Astronomy Gamma-rays: most energetic electromagnetic radiation; traces the most violent processes in the Universe The Compton Gamma-Ray Observatory ...