3 The detector
... the Galaxy, extragalactic ray bursts and active galactic nuclei, all emitters of very high energy photons (see Figure 1). Tremendous progress has been made during the last century in understanding these new objects, helped in that by the fact that many of them are detected in several wavelength do ...
... the Galaxy, extragalactic ray bursts and active galactic nuclei, all emitters of very high energy photons (see Figure 1). Tremendous progress has been made during the last century in understanding these new objects, helped in that by the fact that many of them are detected in several wavelength do ...
#1 - Electromagnetic Spectrum Intro
... a. What animals can see light just outside the visible spectrum? What is an example of how we use this to get rid of these pests? ...
... a. What animals can see light just outside the visible spectrum? What is an example of how we use this to get rid of these pests? ...
Lecture 18/9 Telescopes Ulf Torkelsson 1 Optics
... are absorbed by the atmosphere. In order to explore other parts of the electromagnetic spectrum one must take the telescopes outside of the atmosphere. Such instruments have been developed to study infrared, ultraviolet, X-ray and gamma rays. Infrared and ultraviolet telescopes look fairly similar t ...
... are absorbed by the atmosphere. In order to explore other parts of the electromagnetic spectrum one must take the telescopes outside of the atmosphere. Such instruments have been developed to study infrared, ultraviolet, X-ray and gamma rays. Infrared and ultraviolet telescopes look fairly similar t ...
Annular Comb Gate
... interacted with the gate even when relatively far away. Heuristically, we were ions, the OFF state deflect the ions onto the two annular detectors. Since deflection depends on trying to chop the ion beam with a dull knife, and despite feeding the beam in voltage, one can also have an OFF’ state that ...
... interacted with the gate even when relatively far away. Heuristically, we were ions, the OFF state deflect the ions onto the two annular detectors. Since deflection depends on trying to chop the ion beam with a dull knife, and despite feeding the beam in voltage, one can also have an OFF’ state that ...
Simultaneous Multiple Wavelength Observation
... than 10-12 m. Gamma-ray bursts are sudden bursts of gamma-ray coming from the sky. It was first discovered in the cold war era (1960’s to mid-80’s) by gamma-ray detector satellites whose original task was to monitor nuclear bomb tests carried out on Earth. These bursts are found at a rate of about o ...
... than 10-12 m. Gamma-ray bursts are sudden bursts of gamma-ray coming from the sky. It was first discovered in the cold war era (1960’s to mid-80’s) by gamma-ray detector satellites whose original task was to monitor nuclear bomb tests carried out on Earth. These bursts are found at a rate of about o ...
KristinPoinarPOSTER - Physics
... techniques. The chamber would be potentially applicable to liquid noble experiments with 40K x-ray backgrounds in their photomultiplier tubes; alpha particles originating from various radon daughters appear to limit other experiments. The full-size beta cage would be the world’s most sensitive detec ...
... techniques. The chamber would be potentially applicable to liquid noble experiments with 40K x-ray backgrounds in their photomultiplier tubes; alpha particles originating from various radon daughters appear to limit other experiments. The full-size beta cage would be the world’s most sensitive detec ...
C:\Documents and Settings\ajb\My Documents\conferences
... figure, requiring the detector to be reverse-biased to maximize dynamic range. •The detector voltage modulates the gate of a source follower whose drive FET is in the cell and whose current source is common to all the detectors in a column. The limited size of the cell transistor constrains its driv ...
... figure, requiring the detector to be reverse-biased to maximize dynamic range. •The detector voltage modulates the gate of a source follower whose drive FET is in the cell and whose current source is common to all the detectors in a column. The limited size of the cell transistor constrains its driv ...
AMUSE-Virgo on the survival of super
... - 84 new targets with Chandra ACIS-S (454 ksec) + 16 archival - 57 new targets with Spitzer MIPS (9.5 hr) + 43 archival - HST ACS archival data (100 orbits) - VLA, in progress (with D. Axon) ...
... - 84 new targets with Chandra ACIS-S (454 ksec) + 16 archival - 57 new targets with Spitzer MIPS (9.5 hr) + 43 archival - HST ACS archival data (100 orbits) - VLA, in progress (with D. Axon) ...
Indications for an influence of Hot Jupiters
... from Stelzer & Neuhäuser (2001), field stars (ca. 5 Gyr) from Schmitt & Liefke (2004), and old disk and halo M dwarfs (≥ 10 Gyr) from Micela et al. (1997). We use the median X-ray luminosities and standard deviations from those authors; if no standard deviation is given, we fit the measured luminosi ...
... from Stelzer & Neuhäuser (2001), field stars (ca. 5 Gyr) from Schmitt & Liefke (2004), and old disk and halo M dwarfs (≥ 10 Gyr) from Micela et al. (1997). We use the median X-ray luminosities and standard deviations from those authors; if no standard deviation is given, we fit the measured luminosi ...
Discovery of Kilohertz Quasi-periodic Oscillations from 4U 1820
... consists of five identical proportional counters with a total area of 6250 cm2. In the first observation we used several parallel single-bit observing modes with 122 ms (2213 s) resolution and differing energy ranges. In the three subsequent pointings, data were obtained using both a broadband 122 m ...
... consists of five identical proportional counters with a total area of 6250 cm2. In the first observation we used several parallel single-bit observing modes with 122 ms (2213 s) resolution and differing energy ranges. In the three subsequent pointings, data were obtained using both a broadband 122 m ...
For a big view of inner Earth, catch a few
... petrochemical called linear alkylbenzene, or LAB, used to make clear detergents, like liquid hand soap. It’s less toxic than most chemical liquid scintillators. “It produces a lot of light, and it’s very transparent, but it’s a safer scintillator,” says SNO+ director Mark Chen. “It’s much easier to ...
... petrochemical called linear alkylbenzene, or LAB, used to make clear detergents, like liquid hand soap. It’s less toxic than most chemical liquid scintillators. “It produces a lot of light, and it’s very transparent, but it’s a safer scintillator,” says SNO+ director Mark Chen. “It’s much easier to ...
PHYS_3380_100714_bw - The University of Texas at Dallas
... a grating: a finely ruled, smooth surface. • Light interferes with itself and disperses into colors. • This spectrum is recorded by a digital detector called a CCD. ...
... a grating: a finely ruled, smooth surface. • Light interferes with itself and disperses into colors. • This spectrum is recorded by a digital detector called a CCD. ...
radio loudness. - Rencontres de Moriond
... XXXXth Recontres de Moriond “Very High Energy Phenomena in the Universe”, La Thuile, Italy ...
... XXXXth Recontres de Moriond “Very High Energy Phenomena in the Universe”, La Thuile, Italy ...
Ay 122 - Fall 2004 Electromagnetic Radiation And Its Interactions With Matter
... • At particular T, some levels will have a higher probability of being occupied than others. • Probability of some transitions is greater than others. • Not all transitions are possible (selection rules). Because of conservation laws - e.g. since a photon carries angular momentum cannot make a trans ...
... • At particular T, some levels will have a higher probability of being occupied than others. • Probability of some transitions is greater than others. • Not all transitions are possible (selection rules). Because of conservation laws - e.g. since a photon carries angular momentum cannot make a trans ...
10 11 /s Photo-fission facility at ISAC. operation planned for 2014
... (DOE), is a research program that proposes to establish a U.S. Facility for Rare Isotope Beams (FRIB) with forefront scientific research capabilities complimentary to existing or planned facilities world-wide, and to exploit the scientific potential of rare isotope beams as a research tool for disco ...
... (DOE), is a research program that proposes to establish a U.S. Facility for Rare Isotope Beams (FRIB) with forefront scientific research capabilities complimentary to existing or planned facilities world-wide, and to exploit the scientific potential of rare isotope beams as a research tool for disco ...
Chapter 5: Telescopes - University of Texas Astronomy Home Page
... least affected (recall material from ch.3). For other wavelength regions, need satellite observatories or at least very high mountains (same for visible because of seeing). (Sec. 5.7) 2. CCDs—Photographic plates only capture about 1% of the light, while charge-coupled devices (CCDs) can get about 75 ...
... least affected (recall material from ch.3). For other wavelength regions, need satellite observatories or at least very high mountains (same for visible because of seeing). (Sec. 5.7) 2. CCDs—Photographic plates only capture about 1% of the light, while charge-coupled devices (CCDs) can get about 75 ...
Document
... 1990-1991 sampled hundreds of thousands of galaxies in the soft X-ray band (0.1-2.4 keV). ...
... 1990-1991 sampled hundreds of thousands of galaxies in the soft X-ray band (0.1-2.4 keV). ...
Cosmological Transient Objects
... • At the time of explosion, the supernova can shine brighter than the host galaxy consisting of billions of stars. • In one month, a supernova can emit as much energy as Sun would emit in its entire life span of billions of years. • GRBs: biggest source of gamma-rays in universe and 100 times more e ...
... • At the time of explosion, the supernova can shine brighter than the host galaxy consisting of billions of stars. • In one month, a supernova can emit as much energy as Sun would emit in its entire life span of billions of years. • GRBs: biggest source of gamma-rays in universe and 100 times more e ...
Black Hole Binaries in Quiescence
... Outburst Cycles: XRB vs AGN • XRB: assume that supply of mass is constant, and that variability is due to accretion flow instabilities • AGN: assume significant changes in mass supply (tidal disruption etc) ...
... Outburst Cycles: XRB vs AGN • XRB: assume that supply of mass is constant, and that variability is due to accretion flow instabilities • AGN: assume significant changes in mass supply (tidal disruption etc) ...
Extraordinary Gamma-Ray Burst
... and variability seen, the outward-directed beam from Swift 1644+57 must point virtually straight at Earth. Other astronomical objects have shown somewhat similar bursts of radiation at X-ray, ultraviolet, and optical wavelengths. These have led researchers to believe they too were witnessing the tid ...
... and variability seen, the outward-directed beam from Swift 1644+57 must point virtually straight at Earth. Other astronomical objects have shown somewhat similar bursts of radiation at X-ray, ultraviolet, and optical wavelengths. These have led researchers to believe they too were witnessing the tid ...
X-ray and Gamma-ray Studies of the Millisecond Pulsar and
... We present X-ray observations of the “redback” eclipsing radio millisecond pulsar (MSP) and candidate radio pulsar/X-ray binary transition object PSR J1723–2837. The X-ray emission from the system is predominantly non-thermal and exhibits pronounced variability as a function of orbital phase, with a ...
... We present X-ray observations of the “redback” eclipsing radio millisecond pulsar (MSP) and candidate radio pulsar/X-ray binary transition object PSR J1723–2837. The X-ray emission from the system is predominantly non-thermal and exhibits pronounced variability as a function of orbital phase, with a ...
The ANTARES telescope turns its gaze to the sky
... that will detect particles up to 10ZO eV. They could help to elucidate the origin of cosmic rays on which scientists have been debating for tens of years. However, here again, the fact that protons are subject to interaction with diffuse photon backgrounds on their path to the detector limits the ob ...
... that will detect particles up to 10ZO eV. They could help to elucidate the origin of cosmic rays on which scientists have been debating for tens of years. However, here again, the fact that protons are subject to interaction with diffuse photon backgrounds on their path to the detector limits the ob ...
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.