The XMM-Newton Bright Serendipitous Survey
... flux ratios below 20 (i.e. for the majority of type 1 AGN, galaxies and stars). Only the rare (but interesting) sources with extreme X-ray-to-optical flux ratios, like the distant type 2 QSOs (e.g. Severgnini et al. 2006), are expected to have magnitudes as faint as R∼25. For this reason, for the la ...
... flux ratios below 20 (i.e. for the majority of type 1 AGN, galaxies and stars). Only the rare (but interesting) sources with extreme X-ray-to-optical flux ratios, like the distant type 2 QSOs (e.g. Severgnini et al. 2006), are expected to have magnitudes as faint as R∼25. For this reason, for the la ...
Revising the census of low luminosity AGN
... A LOW EW (~1 Å) IS CHARACTERISTIC OF STELLAR PROCESSES AGN 10 - Roma 10/09/2012 ...
... A LOW EW (~1 Å) IS CHARACTERISTIC OF STELLAR PROCESSES AGN 10 - Roma 10/09/2012 ...
Probing nuclear activity versus star formation at z ∼ 0.8 using near
... selected in the X-rays and all of them have MIR counterparts (i.e. detection in the 3.6, 4.5, 5.8, 8 and 24 μm bands of the Spitzer Space Telescope). See Section 2 for further details in the sample selection. Here, we present NIR spectroscopic observations for 28 of these AGN, which have spectroscop ...
... selected in the X-rays and all of them have MIR counterparts (i.e. detection in the 3.6, 4.5, 5.8, 8 and 24 μm bands of the Spitzer Space Telescope). See Section 2 for further details in the sample selection. Here, we present NIR spectroscopic observations for 28 of these AGN, which have spectroscop ...
FY96
... radial velocities are directed almost exactly toward or away from the Galactic plane. In the Astrophysical Journal Letters of 10 March 1996, Majewski, J. Munn (U. of Chicago), and S. Hawley (Michigan State U.) report on Hydra multi-fiber spectroscopy of the NGP field. They obtained over 200 new radi ...
... radial velocities are directed almost exactly toward or away from the Galactic plane. In the Astrophysical Journal Letters of 10 March 1996, Majewski, J. Munn (U. of Chicago), and S. Hawley (Michigan State U.) report on Hydra multi-fiber spectroscopy of the NGP field. They obtained over 200 new radi ...
optimizing the performance of as-manufactured grazing incidence x
... telescopes have only been conceived and designed for a little over fifty (50) years. The Wolter Type I design is particularly well suited for stellar astronomical telescopes (very small field-ofview). The first orbiting X-ray observatory, HEAO-1 was launched in 1977, a mere twenty-eight (28) years a ...
... telescopes have only been conceived and designed for a little over fifty (50) years. The Wolter Type I design is particularly well suited for stellar astronomical telescopes (very small field-ofview). The first orbiting X-ray observatory, HEAO-1 was launched in 1977, a mere twenty-eight (28) years a ...
11115002
... This study includes detailed exploration of Vela pulsar magnetosphere and glitches—including recent studies that compare Vela pulsar with other pulsars such as: PSR B0329+54, an optical pulsar (the Crab pulsar, PSR B0531+21), an old millisecond pulsar (PSR J0437-4715) and the 2nd fastest known pulsa ...
... This study includes detailed exploration of Vela pulsar magnetosphere and glitches—including recent studies that compare Vela pulsar with other pulsars such as: PSR B0329+54, an optical pulsar (the Crab pulsar, PSR B0531+21), an old millisecond pulsar (PSR J0437-4715) and the 2nd fastest known pulsa ...
eVLBI Progress
... Notes SMART-1 is the first European spacecraft to travel to and orbit around the Moon. This is only the second time that ion propulsion has been used as a mission's primary propulsion system (the first was NASA's Deep Space 1 probe launched in October 1998). SMART-1 is looking for water (in the form ...
... Notes SMART-1 is the first European spacecraft to travel to and orbit around the Moon. This is only the second time that ion propulsion has been used as a mission's primary propulsion system (the first was NASA's Deep Space 1 probe launched in October 1998). SMART-1 is looking for water (in the form ...
the entire issue as one large (23
... within one of the spiral arms. The first clear demonstration of the fact, however, by Yerkes Observatory astronomer William Wilson Morgan (Figure 1), occurred only in 1951. This was one of the grandest discoveries in the history of astronomy, and when Morgan presented it, in a fifteen minute talk at ...
... within one of the spiral arms. The first clear demonstration of the fact, however, by Yerkes Observatory astronomer William Wilson Morgan (Figure 1), occurred only in 1951. This was one of the grandest discoveries in the history of astronomy, and when Morgan presented it, in a fifteen minute talk at ...
Landsat program
... Key to MSS success was the scan monitor mounted on the underbelly of the Mg housing. It consisted of a diode source & sensor mounted at ends of four flat mirrors that were tilted so that it took 14 bounces for a beam to reflect length of the three mirrors from source to sender striking Be scan mirr ...
... Key to MSS success was the scan monitor mounted on the underbelly of the Mg housing. It consisted of a diode source & sensor mounted at ends of four flat mirrors that were tilted so that it took 14 bounces for a beam to reflect length of the three mirrors from source to sender striking Be scan mirr ...
Combined Earth-/Star-Sensor for Attitude and Orbit Determination of
... based on active pixel technology as it has been proposed in the patent on a „Combined Earth-/ Star-Sensor System and Method for Determining the Orbit and Position of Spacecraft“ developed at Daimler-Chrysler ([1]). The sensor covers a wide range of applications, ranging from Low Earth-Orbits (LEO) o ...
... based on active pixel technology as it has been proposed in the patent on a „Combined Earth-/ Star-Sensor System and Method for Determining the Orbit and Position of Spacecraft“ developed at Daimler-Chrysler ([1]). The sensor covers a wide range of applications, ranging from Low Earth-Orbits (LEO) o ...
Astronomy
... result in a cascade of particles which can be detected by current observatories.[38] Additionally, some future neutrino detectors may also be sensitive to the particles produced when cosmic rays hit the Earth's atmosphere.[33] Gravitational wave astronomy is an emerging new field of astronomy which ...
... result in a cascade of particles which can be detected by current observatories.[38] Additionally, some future neutrino detectors may also be sensitive to the particles produced when cosmic rays hit the Earth's atmosphere.[33] Gravitational wave astronomy is an emerging new field of astronomy which ...
Herschel Observers` Manual
... burns of typically 10-20cm/s with the thrusters, made every 4-6 weeks to maintain the orbit around L2. ...
... burns of typically 10-20cm/s with the thrusters, made every 4-6 weeks to maintain the orbit around L2. ...
2. The X-ray-Radio correlation for bulgeless galaxies
... Fig. 13: The area studied by the COSMOS survey, depicting the different areas of coverage of the various multi-wavelength surveys undertaken for the project. The black dashed square details the coverage of both XMM and VLA observatories. The red square refers to the area of the Subaru and CFHT surve ...
... Fig. 13: The area studied by the COSMOS survey, depicting the different areas of coverage of the various multi-wavelength surveys undertaken for the project. The black dashed square details the coverage of both XMM and VLA observatories. The red square refers to the area of the Subaru and CFHT surve ...