Study of the X-ray Source Population and the Dark Matter
... Wide-Field Imager Owing to the large effective area, large field of view, and high spatial and time resolution, the Wide Field Imager of the Athena Xray Observatory will make it possible to study X-ray sources down to very low flux limits. In Draco dSph, e.g., we will be able to observe X-ray source ...
... Wide-Field Imager Owing to the large effective area, large field of view, and high spatial and time resolution, the Wide Field Imager of the Athena Xray Observatory will make it possible to study X-ray sources down to very low flux limits. In Draco dSph, e.g., we will be able to observe X-ray source ...
Bez tytułu slajdu
... The neutron ball is similar to a giant atomic nucleus with Z=1057. With such a big compression, neutrons start to "crowd-up", following the Pauli's rule, which does not allow them to be in the same quantum state. It is energetically useful to replace some neutrons with protons, or even by isolated q ...
... The neutron ball is similar to a giant atomic nucleus with Z=1057. With such a big compression, neutrons start to "crowd-up", following the Pauli's rule, which does not allow them to be in the same quantum state. It is energetically useful to replace some neutrons with protons, or even by isolated q ...
Magnetic Fields in Supernova Remnants and Pulsar
... • Another argument for strong magnetic field is the discovery of variations in brightness on timescales of a few years of small features in X-ray synchrotron emission in Cas A and G347.3-0.5. • Brightness increases on similar timescale are also ...
... • Another argument for strong magnetic field is the discovery of variations in brightness on timescales of a few years of small features in X-ray synchrotron emission in Cas A and G347.3-0.5. • Brightness increases on similar timescale are also ...
Altair - the hottest `cool` star in X-rays
... 2.4 MK and its emission measure distribution (EMD) is dominated by rather cool plasma at temperatures in the range of 1 – 4 MK, additionally a weak hotter component seems to contribute at a few percent level. These properties are quite typical for weakly active stars and similar to those of the quie ...
... 2.4 MK and its emission measure distribution (EMD) is dominated by rather cool plasma at temperatures in the range of 1 – 4 MK, additionally a weak hotter component seems to contribute at a few percent level. These properties are quite typical for weakly active stars and similar to those of the quie ...
X-ray tracing using Geant4 ARTICLE IN PRESS Nuclear Instruments
... G4XraySurface: As mentioned in the previous section, the details of the interaction of X-rays on a surface can be described by scattering models of various complexity, and are also driven by the type of data describing the microscopic surface details. It is therefore not surprising that even within ...
... G4XraySurface: As mentioned in the previous section, the details of the interaction of X-rays on a surface can be described by scattering models of various complexity, and are also driven by the type of data describing the microscopic surface details. It is therefore not surprising that even within ...
Justin Kiehne: Next Generation X-ray Observatory
... X-ray astrophysics and astronomy require increasingly high resolution optics for the study of the most distant stellar objects. As resolution improves, light weight must be maintained for increasing photon collection area. X-ray observations are made from space so limitations imposed by launch must ...
... X-ray astrophysics and astronomy require increasingly high resolution optics for the study of the most distant stellar objects. As resolution improves, light weight must be maintained for increasing photon collection area. X-ray observations are made from space so limitations imposed by launch must ...
A. B. C. Walker
... Served at the Air Force Weapons Laboratory and discovered space-based instruments In 1965, joined Space Physics Laboratory of Aerospace Corporation Recruited to Stanford University in 1974 as a professor of applied physics and worked there for 31 years ...
... Served at the Air Force Weapons Laboratory and discovered space-based instruments In 1965, joined Space Physics Laboratory of Aerospace Corporation Recruited to Stanford University in 1974 as a professor of applied physics and worked there for 31 years ...
86essay
... 4. (a) Using the rotating coil of a simple d.c. motor as an example, describe, with the aid of a diagram, the force effects of a magnetic field on an electrical current. (Details of the commutator are not required.) (b) Briefly explain electrical conduction in metals. (c) Account for the production ...
... 4. (a) Using the rotating coil of a simple d.c. motor as an example, describe, with the aid of a diagram, the force effects of a magnetic field on an electrical current. (Details of the commutator are not required.) (b) Briefly explain electrical conduction in metals. (c) Account for the production ...
The X-ray/hard X-ray/gamma-ray connection of gamma
... The 553.7 ks IBIS/ISGRI exposure is cut into 7 time spans of 79 ks each. XSS J12270-4859 is detected with similar significance around 4σ in all but one, there is no long-term variability of XSS J12270-4859 in 18–60 kev band. The 3rd time span has the lowest significance. Though with similar exposure ...
... The 553.7 ks IBIS/ISGRI exposure is cut into 7 time spans of 79 ks each. XSS J12270-4859 is detected with similar significance around 4σ in all but one, there is no long-term variability of XSS J12270-4859 in 18–60 kev band. The 3rd time span has the lowest significance. Though with similar exposure ...
ppt - UCL
... type of the companion. The system was observed with XMM/OM on 2000 April 19, in a low state. From the U,B,V brightness and colours we infer that the companion is a subgiant of mass 4.5 < M < 5.0 Msun and temperature 15500 < Teff < 16500 (spectral type B5 IV). No significant wind is expected from suc ...
... type of the companion. The system was observed with XMM/OM on 2000 April 19, in a low state. From the U,B,V brightness and colours we infer that the companion is a subgiant of mass 4.5 < M < 5.0 Msun and temperature 15500 < Teff < 16500 (spectral type B5 IV). No significant wind is expected from suc ...
The ultra-luminous x-ray sources near center of M82
... Best Candidate of IMBH – M82 X-1 has luminosity ~ 1041 erg/sec not at the center of the galaxy => Not an AGN has a period of 62 days very close to a young star cluster MGG-11 has quasi-periodic oscillation (QPO) around 55 mHz has a mass > 500 Msolar ...
... Best Candidate of IMBH – M82 X-1 has luminosity ~ 1041 erg/sec not at the center of the galaxy => Not an AGN has a period of 62 days very close to a young star cluster MGG-11 has quasi-periodic oscillation (QPO) around 55 mHz has a mass > 500 Msolar ...
Egg Telescope
... materials. Discounts may be available for bulkbuying. Certain services may attract a surcharge. Be nice to the staff and they may be nice to you!! ...
... materials. Discounts may be available for bulkbuying. Certain services may attract a surcharge. Be nice to the staff and they may be nice to you!! ...
ppt
... R. J. Hanisch, A. A. Suchkov, R. L. White Space Telescope Science Institute T. A. McGlynn, E. L. Winter, M. F. Corcoran NASA Goddard Space Flight Center W. Voges Max-Planck-Institute for Extraterrestrial Physics ...
... R. J. Hanisch, A. A. Suchkov, R. L. White Space Telescope Science Institute T. A. McGlynn, E. L. Winter, M. F. Corcoran NASA Goddard Space Flight Center W. Voges Max-Planck-Institute for Extraterrestrial Physics ...
Electromagnetic Radiation
... Electromagnetic radiation includes gamma rays, X-rays, ultraviolet light, visible light, infrared radiation, microwaves, and radio waves. The electromagnetic spectrum is the arrangement of electromagnetic radiation according to wavelength. The Doppler Effect The Doppler effect is the apparent ...
... Electromagnetic radiation includes gamma rays, X-rays, ultraviolet light, visible light, infrared radiation, microwaves, and radio waves. The electromagnetic spectrum is the arrangement of electromagnetic radiation according to wavelength. The Doppler Effect The Doppler effect is the apparent ...
View some helpful resources
... Clear Sky Clock: This interesting site gives a graphical prediction of when the area around Brasstown Bald (which includes Young Harris) will have good weather for astronomical observing. Heavens Above: Great site for satellite visibility predictions, plus spectacular events such as the dazzlingly b ...
... Clear Sky Clock: This interesting site gives a graphical prediction of when the area around Brasstown Bald (which includes Young Harris) will have good weather for astronomical observing. Heavens Above: Great site for satellite visibility predictions, plus spectacular events such as the dazzlingly b ...
スライド タイトルなし - X-ray Astronomy Group at ISAS
... Spectrometer (XRS); the other modules (XRT-I) have X-ray Imaging Spectrometer (XIS) units at their focal planes. At the same time, the Hard X-ray Detector (HXD) measures highenergy (hard) X-rays. ...
... Spectrometer (XRS); the other modules (XRT-I) have X-ray Imaging Spectrometer (XIS) units at their focal planes. At the same time, the Hard X-ray Detector (HXD) measures highenergy (hard) X-rays. ...
Document
... of the Sun, the solar corona, is at X-ray wavelengths. The extended duration, high resolution X-ray images from Yohkoh are being analyzed in an effort to learn why the Sun has a corona and why it varies in intensity so strongly in response to the 11-year solar cycle. This satellite carried a solar X ...
... of the Sun, the solar corona, is at X-ray wavelengths. The extended duration, high resolution X-ray images from Yohkoh are being analyzed in an effort to learn why the Sun has a corona and why it varies in intensity so strongly in response to the 11-year solar cycle. This satellite carried a solar X ...