V. Morozenko, Night Atmosphere Radiation in
... longer structure are separated as different in energy release to UV photons and different in world distribution. The serials of flashes are measured with number of flashes within one serial (number of flashes in one serial: from 3 to 11). Serial contain flashes of various types and occur more freque ...
... longer structure are separated as different in energy release to UV photons and different in world distribution. The serials of flashes are measured with number of flashes within one serial (number of flashes in one serial: from 3 to 11). Serial contain flashes of various types and occur more freque ...
High-Energy Astrophysics with Gamma
... with interstellar gas and photons Cosmic-ray production is associated with regions of massive star formation (e.g., SNRs, colliding OB stellar winds) This represents approximately 90% of the high-energy gamma-ray luminosity of the Milky Way (~106 solar) ...
... with interstellar gas and photons Cosmic-ray production is associated with regions of massive star formation (e.g., SNRs, colliding OB stellar winds) This represents approximately 90% of the high-energy gamma-ray luminosity of the Milky Way (~106 solar) ...
SouthamptonTalkPitkin - LIGO dcc
... • Since 2001 the initial generation of interferometric detectors have been through periods of science data taking • 6 major science runs producing astrophysical results up to 2011 • Enhanced LIGO/Virgo+/GEO-HF tested some “Advanced” technology ...
... • Since 2001 the initial generation of interferometric detectors have been through periods of science data taking • 6 major science runs producing astrophysical results up to 2011 • Enhanced LIGO/Virgo+/GEO-HF tested some “Advanced” technology ...
Nature paper - University of Southampton
... log(Porb) and log(Pspin) axes both suggest that the BeX population might be bimodal. More specifically, the two subpopulations suggested by the data in Fig. 1 have characteristic periods of Porb <40 d and Pspin <10 s (short-period mode) and Porb <100 d and Pspin <200 s (long-period mode). The bimoda ...
... log(Porb) and log(Pspin) axes both suggest that the BeX population might be bimodal. More specifically, the two subpopulations suggested by the data in Fig. 1 have characteristic periods of Porb <40 d and Pspin <10 s (short-period mode) and Porb <100 d and Pspin <200 s (long-period mode). The bimoda ...
LIDAR Imaging Detector Could Build `Super Road Maps` of Planets
... and greater scientific productivity. Our design efforts will enable a broad range of applications, including demanding hyper-spectral imaging in the most severe radiation environments in the Solar system. They will help NASA to achieve science objectives for future planetary missions now being consi ...
... and greater scientific productivity. Our design efforts will enable a broad range of applications, including demanding hyper-spectral imaging in the most severe radiation environments in the Solar system. They will help NASA to achieve science objectives for future planetary missions now being consi ...
The Search for the Source of the Highest Energy Cosmic Rays
... TeV signal. Although the closest, it is one of the weakest; the reason that it is detected whereas other, more distant, but more powerful, AGN are not, must be that the TeV gamma rays suffer absorption in intergalactic space by interaction with background infra-red light.13 This most likely provides ...
... TeV signal. Although the closest, it is one of the weakest; the reason that it is detected whereas other, more distant, but more powerful, AGN are not, must be that the TeV gamma rays suffer absorption in intergalactic space by interaction with background infra-red light.13 This most likely provides ...
Accretion
... AGNs and QUASARS like powered by supermassive black holes (SMBHs). These were probably born in the early Universe from collapse of Supermassive Stars (> 100 Mo) and then accrete gas from the galaxy in which they were born: connection between galaxy formation and supermassive black holes, hot topic o ...
... AGNs and QUASARS like powered by supermassive black holes (SMBHs). These were probably born in the early Universe from collapse of Supermassive Stars (> 100 Mo) and then accrete gas from the galaxy in which they were born: connection between galaxy formation and supermassive black holes, hot topic o ...
Acceleration and radiation of ultra
... Therefore, for local clusters, this time scale places the start of the acceleration process at an epoch where the redshift is z 1 and we can neglect the evolution of the CMBR. Moreover, as discussed in Kang et al. (1996), the higher temperature and energy density of the CMBR at high redshifts inhi ...
... Therefore, for local clusters, this time scale places the start of the acceleration process at an epoch where the redshift is z 1 and we can neglect the evolution of the CMBR. Moreover, as discussed in Kang et al. (1996), the higher temperature and energy density of the CMBR at high redshifts inhi ...
ppt
... Working with colleagues at UH, NGA and IAI in US. Studies using all available neutrino tools: Hypothetical large detectors (100kT class) Assume availability of new photodetectors (LAPPDS of the like) ...
... Working with colleagues at UH, NGA and IAI in US. Studies using all available neutrino tools: Hypothetical large detectors (100kT class) Assume availability of new photodetectors (LAPPDS of the like) ...
transparencies
... GRBs are visible up to large distance • Good indicator of re-ionization state (e.g. Totani et al. 2006) • Information on metalicity at high redshift (e.g. Kawai et al. 2005) ...
... GRBs are visible up to large distance • Good indicator of re-ionization state (e.g. Totani et al. 2006) • Information on metalicity at high redshift (e.g. Kawai et al. 2005) ...
High-mass X-ray Binaries: X-raying the winds Ángel Giménez García
... XSPEC, versión 12.8.08 , especializado en el ajuste de modelos a espectros de rayos X. En la Tabla 4.2 presentamos todos los modelos del continuo que hemos probado en cada uno de los espectros analizados. Los modelos has sido aceptados o rechazados en función del χ2 -reducido asociado a cada ajuste ...
... XSPEC, versión 12.8.08 , especializado en el ajuste de modelos a espectros de rayos X. En la Tabla 4.2 presentamos todos los modelos del continuo que hemos probado en cada uno de los espectros analizados. Los modelos has sido aceptados o rechazados en función del χ2 -reducido asociado a cada ajuste ...
High energy processes in young stellar objects and high-mass X
... 4.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5.1 Gamma rays coming from a massive YSO . . . . . . . . . . . . . . 4.5.2 T-Tauri stars in Monoceros R2 as possible gamma- ...
... 4.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5.1 Gamma rays coming from a massive YSO . . . . . . . . . . . . . . 4.5.2 T-Tauri stars in Monoceros R2 as possible gamma- ...
APS Apr 2008 - User Web Pages
... • Bursts tend to decrease in frequency at higher accretion rates, rather than increasing, as expected theoretically • Such bursts are often much fainter than might be expected (given the wait time and inferred accretion rate), suggesting an “energy leak” • A (possibly) related issue is that “normal” ...
... • Bursts tend to decrease in frequency at higher accretion rates, rather than increasing, as expected theoretically • Such bursts are often much fainter than might be expected (given the wait time and inferred accretion rate), suggesting an “energy leak” • A (possibly) related issue is that “normal” ...
Astro 3303 - Cornell Astronomy
... Chandra X-ray Observatory • 1.2 meter X-ray telescope • Normal mirrors would absorb X-ray photons, so special design required • Wavelength range: 0.124 to 12.4 nanometers • Deployed in highly elliptical Earth orbit (reaches 1/3 of way to Moon) on 23 July ...
... Chandra X-ray Observatory • 1.2 meter X-ray telescope • Normal mirrors would absorb X-ray photons, so special design required • Wavelength range: 0.124 to 12.4 nanometers • Deployed in highly elliptical Earth orbit (reaches 1/3 of way to Moon) on 23 July ...
Document
... light from an astronomical source and to focus that light into an image The light gathering ability of a telescope is defined by its diameter or aperture Before the 20th century, astronomer looked through the telescope with their eyes Today the images are recorded photographically and electronically ...
... light from an astronomical source and to focus that light into an image The light gathering ability of a telescope is defined by its diameter or aperture Before the 20th century, astronomer looked through the telescope with their eyes Today the images are recorded photographically and electronically ...
Multiwavelength observations of XTE J1118+480`s outburst
... 85% of sources are highly absorbed (X-ray observations): column density NH>1023 cm-2 X-ray absorption >> IR => absorbing matter local to neutron star NH variation on short periods? => link with accretion column/geometry? ...
... 85% of sources are highly absorbed (X-ray observations): column density NH>1023 cm-2 X-ray absorption >> IR => absorbing matter local to neutron star NH variation on short periods? => link with accretion column/geometry? ...
The impact of X-rays on molecular cloud fragmentation and the IMF
... isothermal conditions, with an equation of state of the form P ∝ ρ. The XDR code that updates the thermodynamics is only linked with simulation A where we do have Xrays. The 107 M¯ black hole, at 10% of Eddington, yields a flux of 160 erg s−1 cm−2 with some extinction (Meijerink et al. 2007). Wada e ...
... isothermal conditions, with an equation of state of the form P ∝ ρ. The XDR code that updates the thermodynamics is only linked with simulation A where we do have Xrays. The 107 M¯ black hole, at 10% of Eddington, yields a flux of 160 erg s−1 cm−2 with some extinction (Meijerink et al. 2007). Wada e ...
Lecture 5-Spatial resolution and field of view
... • BRDF is bi-reflectance distribution function. It gives scattered amplitude as a function of input and output angle. ...
... • BRDF is bi-reflectance distribution function. It gives scattered amplitude as a function of input and output angle. ...
X-ray spectra of highly magnetized neutron stars in binary systems
... having a mass of at least 1.4 M is already awesome in itself, more and more mysteries were revealed with time. If such a neutron star is forming a binary system with a stellar companion, it can accrete material from its companion (see Section 2.3). Due to the depth of the gravitational well of the ...
... having a mass of at least 1.4 M is already awesome in itself, more and more mysteries were revealed with time. If such a neutron star is forming a binary system with a stellar companion, it can accrete material from its companion (see Section 2.3). Due to the depth of the gravitational well of the ...
Lecture 5-Spatial resolution and field of view, sensitivity and
... • BRDF is bi-reflectance distribution function. It gives scattered amplitude as a function of input and output angle. ...
... • BRDF is bi-reflectance distribution function. It gives scattered amplitude as a function of input and output angle. ...
Quiz Lecture 6
... If you wished to send pulses of electromagnetic energy from Earth's surface out into space in order to contact ET's, your chances of success are greatest if you send a. X-rays or gamma rays. b. infrared, ultraviolet, or visible waves. c. visible or radio waves. d. visible waves only. answer: c ...
... If you wished to send pulses of electromagnetic energy from Earth's surface out into space in order to contact ET's, your chances of success are greatest if you send a. X-rays or gamma rays. b. infrared, ultraviolet, or visible waves. c. visible or radio waves. d. visible waves only. answer: c ...
chris - ESA Earth Online
... with field angle) that is introduced by axial asymmetry. The design has only spherical surfaces. It uses fused quartz for the prisms; the spectrometer mirrors are made in a common optical glass, as for the telescope primary. The design using curved prisms is capable of correction for the distortions ...
... with field angle) that is introduced by axial asymmetry. The design has only spherical surfaces. It uses fused quartz for the prisms; the spectrometer mirrors are made in a common optical glass, as for the telescope primary. The design using curved prisms is capable of correction for the distortions ...
"Experimental study of charge diffusion in the undepleted silicon of X-ray CCDs"
... representation without losing any information, resulting in a dramatically simplified analysis and improved signal/noise ratio. We have shown that events from the undepleted bulk can be used for retrieving information regarding the energy of the corand lines responding X-ray photon. In our study, th ...
... representation without losing any information, resulting in a dramatically simplified analysis and improved signal/noise ratio. We have shown that events from the undepleted bulk can be used for retrieving information regarding the energy of the corand lines responding X-ray photon. In our study, th ...
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.