burrows_liverpool2012
... NIR/optical observations show high extinction: the source is only seen in H, K bands. We derive Av ~ 4.5, roughly consistent with NH ≈ 1.5 x 1022 cm-2 derived from the X-ray spectrum. Host galaxy shows no evidence of nuclear activity. ...
... NIR/optical observations show high extinction: the source is only seen in H, K bands. We derive Av ~ 4.5, roughly consistent with NH ≈ 1.5 x 1022 cm-2 derived from the X-ray spectrum. Host galaxy shows no evidence of nuclear activity. ...
The Evolution of Galaxy - Tufts Institute of Cosmology
... been drawn in but have not yet been fully assimilated. Virgo seems to be in an even earlier stage of formation. It is still pulling in surrounding material and, at the current rate of progress, will look like Coma after a few billion years. This dynamic view of clusters gobbling up ...
... been drawn in but have not yet been fully assimilated. Virgo seems to be in an even earlier stage of formation. It is still pulling in surrounding material and, at the current rate of progress, will look like Coma after a few billion years. This dynamic view of clusters gobbling up ...
CORONAL EVOLUTION OF THE SUN IN TIME: HIGH
... in the 47 Cas binary system. It has not been characterized optically as it has been individually detected only by radio methods (Güdel et al. 1998b) and indirectly from Hipparcos measurements as a companion to the optically bright F0 V star 47 Cas (=HR 581 ¼ HD 12230). The radio position is clearly ...
... in the 47 Cas binary system. It has not been characterized optically as it has been individually detected only by radio methods (Güdel et al. 1998b) and indirectly from Hipparcos measurements as a companion to the optically bright F0 V star 47 Cas (=HR 581 ¼ HD 12230). The radio position is clearly ...
Chandra
... for optically thin lines and Lx "-' (M / voo ) 1+8 for optically thick lines where the x-ray-emitting-gas volume filling factor f "-' r8. From this relationship they could obtain the observed Lx "-' Lbol dependence only if -0.4 ~ s ~ -0.25. Hillier et al. (1993) reported on a ROBAT spectrum of ( Pup ...
... for optically thin lines and Lx "-' (M / voo ) 1+8 for optically thick lines where the x-ray-emitting-gas volume filling factor f "-' r8. From this relationship they could obtain the observed Lx "-' Lbol dependence only if -0.4 ~ s ~ -0.25. Hillier et al. (1993) reported on a ROBAT spectrum of ( Pup ...
Alignment of the 1.6 meter off-axis New Solar Telescope at Big Bear
... be accomplished without large-aperture solar telescopes. It has been generally accepted that the magnetoconvection rooted on the photosphere plays a critical role in solar activity and variability. To verify and guide modeling of magneto-convection and flux emergence, transport and annihilation, mete ...
... be accomplished without large-aperture solar telescopes. It has been generally accepted that the magnetoconvection rooted on the photosphere plays a critical role in solar activity and variability. To verify and guide modeling of magneto-convection and flux emergence, transport and annihilation, mete ...
Critical-Angle Transmission Gratings for High Resolution, Large Area Soft X-Ray Spectroscopy
... over more than two orders of magnitude in energy. High quality spectroscopy over such a large band cannot be obtained with a single instrument. For example, imaging spectroscopy with a spectral resolution of 2 eV has been demonstrated with small transition-edge-sensor-based microcalorimeter arrays, ...
... over more than two orders of magnitude in energy. High quality spectroscopy over such a large band cannot be obtained with a single instrument. For example, imaging spectroscopy with a spectral resolution of 2 eV has been demonstrated with small transition-edge-sensor-based microcalorimeter arrays, ...
LOCALIZATION AND OBSERVATIONS OF GRB010921 BY THE …
... Underlying physical reason is not known, but the radiation process (and photon energy) should be related to the energy content The correlation makes GRBs important cosmological tools, because they probe redshifts not accessible by Ia SNe ...
... Underlying physical reason is not known, but the radiation process (and photon energy) should be related to the energy content The correlation makes GRBs important cosmological tools, because they probe redshifts not accessible by Ia SNe ...
ASI 2017 Abstract Book - Astronomical Society of India
... Karamveer Kaur - Non-Axisymmetric Instabilities of a Stellar Disc around a Black Hole Parallel Session - Extragalactic Astronomy- 5 Chanda J. Jog - Off-centred dark matter halo leading to strong central disc lopsidedness Sandeep Kumar Kataria - Studying the Formation and Structure of Bars in Dark Ma ...
... Karamveer Kaur - Non-Axisymmetric Instabilities of a Stellar Disc around a Black Hole Parallel Session - Extragalactic Astronomy- 5 Chanda J. Jog - Off-centred dark matter halo leading to strong central disc lopsidedness Sandeep Kumar Kataria - Studying the Formation and Structure of Bars in Dark Ma ...
pdf - at www.arxiv.org.
... The planetary hypothesis of the solar cycle is an old idea in which the gravitational influence of the planets has a non-negligible effect on the causes of the solar magnetic cycle. The advance of this hypothesis is based on phenomenological correlations between dynamical parameters of the Sun´s mov ...
... The planetary hypothesis of the solar cycle is an old idea in which the gravitational influence of the planets has a non-negligible effect on the causes of the solar magnetic cycle. The advance of this hypothesis is based on phenomenological correlations between dynamical parameters of the Sun´s mov ...
Student Manual - Gettysburg College
... XMM-Newton is an X-ray satellite launched into Earth’s orbit on December 10, 1999 by the European Space Agency (ESA). XMM-Newton is actually a fully-functioning observatory, carrying three very advanced X-ray telescopes. They each contain 58 highprecision concentric mirrors, nested to offer the larg ...
... XMM-Newton is an X-ray satellite launched into Earth’s orbit on December 10, 1999 by the European Space Agency (ESA). XMM-Newton is actually a fully-functioning observatory, carrying three very advanced X-ray telescopes. They each contain 58 highprecision concentric mirrors, nested to offer the larg ...
LARRY MARSCHALL CLEA
... •Some positional astronomy but mostly modern Astrophysics . •Is there an experiential or lab component to these courses ? • In some, but ...
... •Some positional astronomy but mostly modern Astrophysics . •Is there an experiential or lab component to these courses ? • In some, but ...
Thibou Page 1 of 6 Telescopic Analysis of Tomorrow: Advances in
... steerable single-dish radio telescope is the 100 meter Green Bank Telescope in West Virginia. The largest full-dish telescope is the fixed 305 meter Arecibo radio telescope in Puerto Rico. Additionally, arrays like the 27 antennae 25 meter antenna/telescope array in New Mexico called the Very Large ...
... steerable single-dish radio telescope is the 100 meter Green Bank Telescope in West Virginia. The largest full-dish telescope is the fixed 305 meter Arecibo radio telescope in Puerto Rico. Additionally, arrays like the 27 antennae 25 meter antenna/telescope array in New Mexico called the Very Large ...
Climate and the Role of the Sun
... rather the common good that would accrue if one were found. There is nothing wrong with this approach. It was the logic often used, for example, by Thomas Edison in tackling technical problems, sometimes successfully, often not. But such an approach, when applied to investigative science, the ultima ...
... rather the common good that would accrue if one were found. There is nothing wrong with this approach. It was the logic often used, for example, by Thomas Edison in tackling technical problems, sometimes successfully, often not. But such an approach, when applied to investigative science, the ultima ...
