PowerPoint - Chandra X
... in the wind is roughly similar to that of the Sun’s atmosphere, except for a deficit of oxygen atoms, and that it has a temperature of about 100,000 K. The average gas speed is about 500 km/s. ...
... in the wind is roughly similar to that of the Sun’s atmosphere, except for a deficit of oxygen atoms, and that it has a temperature of about 100,000 K. The average gas speed is about 500 km/s. ...
ASTR220 Collisions in Space
... Early days of X-ray astronomy. Crude X-ray observatories placed on rockets (get few minutes of data while rocket above atmosphere). ...
... Early days of X-ray astronomy. Crude X-ray observatories placed on rockets (get few minutes of data while rocket above atmosphere). ...
Pounds K. - X-ray Astronomy and Cosmology group group
... 1960 Royal Society/DSIR grant to study ‘Solar and Stellar X-radiation’ but ‘stellar’ source detection seemed an ambitious aim at that time with predicted fluxes a billion times fainter than the Sun ...
... 1960 Royal Society/DSIR grant to study ‘Solar and Stellar X-radiation’ but ‘stellar’ source detection seemed an ambitious aim at that time with predicted fluxes a billion times fainter than the Sun ...
PowerPoint - Chandra X
... Chandra Science Highlight SN1979C: The Youngest Nearby Black Hole? This composite image shows the galaxy M100, and the location of SN 1979c, which may contain the youngest known black hole in our cosmic neighborhood. X-rays detected by Chandra are shown in gold, while optical data from ESO’s Very La ...
... Chandra Science Highlight SN1979C: The Youngest Nearby Black Hole? This composite image shows the galaxy M100, and the location of SN 1979c, which may contain the youngest known black hole in our cosmic neighborhood. X-rays detected by Chandra are shown in gold, while optical data from ESO’s Very La ...
SIMBOL-X The
... to XMM-Newton but in the INTEGRAL energy range would give a tremendous advance in the study of compact objects Coded mask optics ...
... to XMM-Newton but in the INTEGRAL energy range would give a tremendous advance in the study of compact objects Coded mask optics ...
PowerPoint - Chandra X
... The image shows X-ray data from Chandra (purple) from the star CoRot-2A, along with optical infrared data from the Panchromatic Robotic Optical Monitoring and Polarimetry Telescopes (PROMPT) and the Two Micron All Sky Survey (2MASS). ...
... The image shows X-ray data from Chandra (purple) from the star CoRot-2A, along with optical infrared data from the Panchromatic Robotic Optical Monitoring and Polarimetry Telescopes (PROMPT) and the Two Micron All Sky Survey (2MASS). ...
PowerPoint - Chandra X
... Chandra’s image of NGC 7027 represents the first detection of X-rays from this young planetary nebula that is about 700 years old. A bubble of 3 million degree Celsius gas with a length about a hundred times that of our solar system is shown in the image. The image is brighter to the upper right -- ...
... Chandra’s image of NGC 7027 represents the first detection of X-rays from this young planetary nebula that is about 700 years old. A bubble of 3 million degree Celsius gas with a length about a hundred times that of our solar system is shown in the image. The image is brighter to the upper right -- ...
X Ray Astronomy
... • This can show information like how many X-rays are coming from the object at a particular energy. There are also some electron transitions which have lines in the "soft" (low-energy) X-ray band. If these are not there then we can tell that, for example, there is very little (or even no) cool X-ray ...
... • This can show information like how many X-rays are coming from the object at a particular energy. There are also some electron transitions which have lines in the "soft" (low-energy) X-ray band. If these are not there then we can tell that, for example, there is very little (or even no) cool X-ray ...
Atomic Physics Explaining the Universe
... • Strong iron emission lines, Fe XVII – XXIV • Continuum emission between 1.5-10A • Detection of non-thermal electrons from small flares • Modeling of X-ray Spectra is well developed and allow scientists to compare detailed forward models with state-of-the-art observations. ...
... • Strong iron emission lines, Fe XVII – XXIV • Continuum emission between 1.5-10A • Detection of non-thermal electrons from small flares • Modeling of X-ray Spectra is well developed and allow scientists to compare detailed forward models with state-of-the-art observations. ...
Introduction - University of Iowa Astrophysics
... Extreme temperatures (X-ray emitting plasma) Extreme densities (black holes and neutron stars) Extreme magnetic fields (near neutron stars) Extreme velocities (jets from black holes) Extreme explosions (gamma-ray bursts) ...
... Extreme temperatures (X-ray emitting plasma) Extreme densities (black holes and neutron stars) Extreme magnetic fields (near neutron stars) Extreme velocities (jets from black holes) Extreme explosions (gamma-ray bursts) ...
High-Energy Astrophysics - University of Iowa Astrophysics
... • In practice, gamma-rays in the X-ray band are usually referred to as X-rays • Gamma-rays typically have energies above about 100 keV ...
... • In practice, gamma-rays in the X-ray band are usually referred to as X-rays • Gamma-rays typically have energies above about 100 keV ...
Paul Green - Chandra X-Ray Observatory (CXC)
... 2012 X-Ray Binaries Workshop Abstract In 1962, Scorpius X-1 became the first X-ray source discovered outside the Solar System. In the 50 years since, X-ray binaries have proven to be important for studies of fundamental physical processes such as mass accretion and jet formation. Contemporary X-ray ...
... 2012 X-Ray Binaries Workshop Abstract In 1962, Scorpius X-1 became the first X-ray source discovered outside the Solar System. In the 50 years since, X-ray binaries have proven to be important for studies of fundamental physical processes such as mass accretion and jet formation. Contemporary X-ray ...
DoAr21_AAS2005 - Astronomy at Swarthmore College
... Chandra grating spectra provide several diagnostics of the physical properties of hot plasma that might be useful for discriminating among theories of PMS x-ray production. The strongest line in the spectrum – Si Lyman-alpha (left) – shows modest, but statistically significant broadening (FWHM ...
... Chandra grating spectra provide several diagnostics of the physical properties of hot plasma that might be useful for discriminating among theories of PMS x-ray production. The strongest line in the spectrum – Si Lyman-alpha (left) – shows modest, but statistically significant broadening (FWHM ...
The Main Features of the X
... molecular cloud falling into the plane of the Galaxy Cygnus Superbubble/Loop: nearby superbubble from the explosion of many Sne, 14 times the size (at 400 pc in diameter) of the Cynus Loop, a 20,000 year old SNR emitting thermal bremsstrahlung as soft x-rays. North Polar Spur (NPS)/Loop 1: The NPS i ...
... molecular cloud falling into the plane of the Galaxy Cygnus Superbubble/Loop: nearby superbubble from the explosion of many Sne, 14 times the size (at 400 pc in diameter) of the Cynus Loop, a 20,000 year old SNR emitting thermal bremsstrahlung as soft x-rays. North Polar Spur (NPS)/Loop 1: The NPS i ...
Bubble Nebulae Around Ultra-luminous X
... Bubble Nebulae Around Ultra-luminous X-ray Sources and the case study of IC 342 X-1 Ultraluminous X-ray (ULX) sources are variable off-nuclear X-ray sources in external galaxies with luminosities greatly exceeding the Eddington luminosity of a stellar-mass compact object, assuming isotropic emission ...
... Bubble Nebulae Around Ultra-luminous X-ray Sources and the case study of IC 342 X-1 Ultraluminous X-ray (ULX) sources are variable off-nuclear X-ray sources in external galaxies with luminosities greatly exceeding the Eddington luminosity of a stellar-mass compact object, assuming isotropic emission ...
X-ray Binaries and Cygnus X-1
... An X-ray binary is a system made up of a normal star and a compact object rotating about a common center of mass. The compact object pulls mass off of the outer atmospheres of the normal star and the particles spiral down toward the compact object, creating an accretion disk. Because of the internal ...
... An X-ray binary is a system made up of a normal star and a compact object rotating about a common center of mass. The compact object pulls mass off of the outer atmospheres of the normal star and the particles spiral down toward the compact object, creating an accretion disk. Because of the internal ...
Galactic Neighborhood and (Chandra-enabled) X-ray Astrophysics Q. Daniel Wang
... Approach 2: Deep large-scale X-ray mapping: • Individual observations have to be deep to remove enough background sources, which causes the cosmic variance. • To check physical properties of hot plasma near outer boundaries if they are present. Mkn 231, 0.5 Ms ACIS 0.5-8 keV Veilleux et al. 201 ...
... Approach 2: Deep large-scale X-ray mapping: • Individual observations have to be deep to remove enough background sources, which causes the cosmic variance. • To check physical properties of hot plasma near outer boundaries if they are present. Mkn 231, 0.5 Ms ACIS 0.5-8 keV Veilleux et al. 201 ...
PPT
... Also need to know what fraction of the stellar surface radiates! The Magnificent Seven: seven soft X-ray sources with a ‘stellar’ spectrum and a distance estimate ...
... Also need to know what fraction of the stellar surface radiates! The Magnificent Seven: seven soft X-ray sources with a ‘stellar’ spectrum and a distance estimate ...
What Are the Faint X-ray Transients Near the Galactic Center?
... partial eclipses at the 8 hour orbital period. ...
... partial eclipses at the 8 hour orbital period. ...
Nobel Prize in Physics 2002: Riccardo Giaconni
... holes in the nuclear regions of these galaxies, the gas is accelerated to high energies, producing X-rays and radiation in other wavelengths as well. These galaxies are known as quasars, and they emit from a region with the size of our solar system, as much energy as a normal galaxy as a whole does. ...
... holes in the nuclear regions of these galaxies, the gas is accelerated to high energies, producing X-rays and radiation in other wavelengths as well. These galaxies are known as quasars, and they emit from a region with the size of our solar system, as much energy as a normal galaxy as a whole does. ...
poster
... Abstract. DG Tau is a classical T Tauri star showing an unusual X-ray spectrum, best described by two thermal components with different absorption columns. The soft X-rays are less absorbed than the hard X-rays, presumably coronal, component. This rules out stellar accretion as the origin of the sof ...
... Abstract. DG Tau is a classical T Tauri star showing an unusual X-ray spectrum, best described by two thermal components with different absorption columns. The soft X-rays are less absorbed than the hard X-rays, presumably coronal, component. This rules out stellar accretion as the origin of the sof ...
Folie 1
... The last 15 years have been called the „Golden Age of X-ray Astronomy“ . They have been golden for gamma-ray astronomy as well (Martin Weisskopf, talk and after dinner talk). ...
... The last 15 years have been called the „Golden Age of X-ray Astronomy“ . They have been golden for gamma-ray astronomy as well (Martin Weisskopf, talk and after dinner talk). ...
X-ray Astronomy
... (red) from the Spitzer Space Telescope. The Sombrero Galaxy is about 28 million light-years away, near the southern edge of the extensive Virgo cluster of galaxies. ...
... (red) from the Spitzer Space Telescope. The Sombrero Galaxy is about 28 million light-years away, near the southern edge of the extensive Virgo cluster of galaxies. ...
History of X-ray astronomy
The history of X-ray astronomy begins in the 1920s, with interest in short wave communications for the U.S. Navy. This was soon followed by extensive study of the earth's ionosphere. By 1927, interest in the detection of X-ray and ultraviolet (UV) radiation at high altitudes inspired researchers to launch Goddard's rockets into the upper atmosphere to support theoretical studies and data gathering. The first successful rocket flight equipped with instrumentation able to detect solar ultraviolet radiation occurred in 1946. X-ray solar studies began in 1949. By 1973 a solar instrument package orbited on Skylab providing significant solar data.In 1965 the Goddard Space Flight Center program in X-ray astronomy was initiated with a series of balloon-borne experiments. In the 1970s this was followed by high altitude sounding rocket experiments, and that was followed by orbiting (satellite) observatories.The first rocket flight to successfully detect a cosmic source of X-ray emission was launched in 1962 by a group at American Science and Engineering (AS&E).X-ray wavelengths reveal information about the bodies (sources) that emit them.
