Full 11x8.5" Calendar, High Resolution - Chandra X
... This deep image from NASA’s Chandra X-ray Observatory shows the Vela pulsar, a neutron star that was formed when a massive star collapsed. In the upper right is a fast moving jet of particles produced by the pulsar. The pulsar is about 1,000 light years from Earth, and makes over 11 complete rotatio ...
... This deep image from NASA’s Chandra X-ray Observatory shows the Vela pulsar, a neutron star that was formed when a massive star collapsed. In the upper right is a fast moving jet of particles produced by the pulsar. The pulsar is about 1,000 light years from Earth, and makes over 11 complete rotatio ...
imaging science in astronomy - RIT CIS
... phenomena in any given nebula, such objects demand a multiwavelength approach to imaging. A case in point is the young planetary nebula BD +30° 3639 (Fig. 10). This planetary nebula emits strongly at wavelengths ranging from radio through X ray. The Chandra X-ray image shows a region of X-ray emissi ...
... phenomena in any given nebula, such objects demand a multiwavelength approach to imaging. A case in point is the young planetary nebula BD +30° 3639 (Fig. 10). This planetary nebula emits strongly at wavelengths ranging from radio through X ray. The Chandra X-ray image shows a region of X-ray emissi ...
Astrophysical explosions: from solar flares to cosmic gamma
... or gravitational collapse. The Big Bang is commonly referred to as an explosion, although the Big Bang was of such a special nature that it does not fit the definition given in the Introduction. The Big Bang essentially represented the beginning of space and time and hence the beginning of physics as ...
... or gravitational collapse. The Big Bang is commonly referred to as an explosion, although the Big Bang was of such a special nature that it does not fit the definition given in the Introduction. The Big Bang essentially represented the beginning of space and time and hence the beginning of physics as ...
Review: How does a star`s mass determine its life story?
... combine with protons, making neutrons and neutrinos (inverse beta decay, reverse of n p + e-) Neutrons collapse to the center, forming a neutron star ...
... combine with protons, making neutrons and neutrinos (inverse beta decay, reverse of n p + e-) Neutrons collapse to the center, forming a neutron star ...
Study of the X-ray Source Population and the Dark Matter
... 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 sources with luminositie ...
... 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 sources with luminositie ...
Evaluation of Satellite Sounding Products Using NOAA PROducts Validation System (NPROVS)
... Coordinate with GRUAN WG Task Teams for Ancillary Measurement (Lidar, MWR, FTIR … satellites) and Measurement Scheduling to assess the availability of data, best measurement practices, associated uncertainties and the optimal mix (recipe) of measurements used to estimate the column state (SASBE) Col ...
... Coordinate with GRUAN WG Task Teams for Ancillary Measurement (Lidar, MWR, FTIR … satellites) and Measurement Scheduling to assess the availability of data, best measurement practices, associated uncertainties and the optimal mix (recipe) of measurements used to estimate the column state (SASBE) Col ...
ppt - MIT Haystack Observatory
... flaring introduces variability in correlated Lx-Lr which increases the spread , but generally falls within the order of magnitude range of GB relation radio variability appears to be a larger factor than X-ray variability there are situations where even these well-understood (?!) systems belie our e ...
... flaring introduces variability in correlated Lx-Lr which increases the spread , but generally falls within the order of magnitude range of GB relation radio variability appears to be a larger factor than X-ray variability there are situations where even these well-understood (?!) systems belie our e ...
Chapter 6. - Department of Physics & Astronomy
... (colors!) to produce a spectrum. Spectral lines in a spectrum tell us about the chemical composition and other properties of the observed object ...
... (colors!) to produce a spectrum. Spectral lines in a spectrum tell us about the chemical composition and other properties of the observed object ...
3D maps of the local interstellar medium: searching for the imprints
... object with a vertical speed larger than that of the disk stars. This work considered as crossing candidates a dwarf galaxy or a dark matter subhalo; however a massive cloud as modeled by Olano (2001) is not excluded. A massive globular cluster, as suggested in the next section, would also produce s ...
... object with a vertical speed larger than that of the disk stars. This work considered as crossing candidates a dwarf galaxy or a dark matter subhalo; however a massive cloud as modeled by Olano (2001) is not excluded. A massive globular cluster, as suggested in the next section, would also produce s ...
Notes HERE
... Gamma-Ray Bursts Gamma-ray bursts also occur, and were first spotted by satellites looking for violations of nuclear test-ban treaties. This map of where the bursts have been observed shows no “clumping” of bursts anywhere, particularly not within the Milky Way. Therefore, the bursts must originate ...
... Gamma-Ray Bursts Gamma-ray bursts also occur, and were first spotted by satellites looking for violations of nuclear test-ban treaties. This map of where the bursts have been observed shows no “clumping” of bursts anywhere, particularly not within the Milky Way. Therefore, the bursts must originate ...
Quasars - Ann Arbor Earth Science
... Blazar - broader term including BL Lacertae objects and those quasars which share their characteristics of unusually weak spectral features, plus strong and rapid variability. LINER - Low-Ionization Nuclear Emission-line Region, gaseous regions common in the centers of many kinds of galaxies. Some o ...
... Blazar - broader term including BL Lacertae objects and those quasars which share their characteristics of unusually weak spectral features, plus strong and rapid variability. LINER - Low-Ionization Nuclear Emission-line Region, gaseous regions common in the centers of many kinds of galaxies. Some o ...
Lecture03
... • Astronomers refer to this 24 hour period as a mean solar day (§2-7), implying that this time period is measured with respect to the Sun’s position on the sky. • A sidereal day (period of rotation measured with respect to the stars – see Box 2-2) is slightly shorter; it is shorter by approximately ...
... • Astronomers refer to this 24 hour period as a mean solar day (§2-7), implying that this time period is measured with respect to the Sun’s position on the sky. • A sidereal day (period of rotation measured with respect to the stars – see Box 2-2) is slightly shorter; it is shorter by approximately ...
Powerpoint - UIUC HEP Group
... The point is, we can see exoplanets now. We’ll study them with the next generation of very large telescopes. ...
... The point is, we can see exoplanets now. We’ll study them with the next generation of very large telescopes. ...
MICROQUASARS - Osservatorio Astronomico di Roma-INAF
... Due to relativistic beaming: Dt a 1/2g2 ; I a 8g3 e.g. If g = 5, Q < 10o Dt < 1/50 and DI > 103 ...
... Due to relativistic beaming: Dt a 1/2g2 ; I a 8g3 e.g. If g = 5, Q < 10o Dt < 1/50 and DI > 103 ...
CHAPTER 13 Neutron Stars and Black Holes Clickers
... Question 9 The equivalence between an accelerating windowless elevator in space and a stationary elevator in a gravity field is a prediction of Newton’s theory of gravity. explains why elevators don’t work in space. explains why E = mc2 is true. helps explain Einstein’s theory of gravity. e) All of ...
... Question 9 The equivalence between an accelerating windowless elevator in space and a stationary elevator in a gravity field is a prediction of Newton’s theory of gravity. explains why elevators don’t work in space. explains why E = mc2 is true. helps explain Einstein’s theory of gravity. e) All of ...
Power Point Presentation
... powerful to strike Earth from beyond the solar system ever detected - had a significant effect on Earth's upper atmosphere, report Stanford researchers. It is the first time that a significant change in Earth's environment has been traced to energy from a distant star. (from the NASA press release) ...
... powerful to strike Earth from beyond the solar system ever detected - had a significant effect on Earth's upper atmosphere, report Stanford researchers. It is the first time that a significant change in Earth's environment has been traced to energy from a distant star. (from the NASA press release) ...
What Are the Faint X-ray Transients Near the Galactic Center?
... • Most bright, transient X-ray sources are accreting black holes and neutron stars. • When accretion occurs at low rates, the disk tends to be unstable, producing outbursts with LX>1037 erg s-1. ...
... • Most bright, transient X-ray sources are accreting black holes and neutron stars. • When accretion occurs at low rates, the disk tends to be unstable, producing outbursts with LX>1037 erg s-1. ...
What is X-ray Astronomy? - Extreme Universe Laboratory
... postulated their formation in supernovae. ...
... postulated their formation in supernovae. ...
Point-like source searches with ANTARES
... produced in the interaction of high energy nucleons with matter or radiation: N X ( K ...) Y ( ) Y Cosmic rays ...
... produced in the interaction of high energy nucleons with matter or radiation: N X ( K ...) Y ( ) Y Cosmic rays ...
Star formation, feedback and the role of SNe II and SNe Ia in the
... • Mashchenko et al 2005 made N-body simulations of the formation of dwarf spheroidal galaxies and found that the best fitting models for Draco have a large range of DM halo virial masses (108-109 MO) • Mashchenko et al 2006 made simulations of the interaction of Draco with our Galaxy and ruled out t ...
... • Mashchenko et al 2005 made N-body simulations of the formation of dwarf spheroidal galaxies and found that the best fitting models for Draco have a large range of DM halo virial masses (108-109 MO) • Mashchenko et al 2006 made simulations of the interaction of Draco with our Galaxy and ruled out t ...
Chapter 14 Black Holes as Central Engines
... 1. There is a very strong continuum across a broad range of wavelengths that is non-thermal in character. 2. Sitting on top of this continuum are emission lines, but they are very broad, and their wavelengths do not correspond to the lines for any known spectra. ...
... 1. There is a very strong continuum across a broad range of wavelengths that is non-thermal in character. 2. Sitting on top of this continuum are emission lines, but they are very broad, and their wavelengths do not correspond to the lines for any known spectra. ...
Gamma-Ray Bursts as Sources of Strong Magnetic Fields
... new t0 . Overall such a model requires a the magnetic field that is extremely large initially, leading to the prompt emission and then it decreases, just at the right time (and before all the rotational energy is exhausted) to a lower level in which the weaker magnetar powers (using the remaining ro ...
... new t0 . Overall such a model requires a the magnetic field that is extremely large initially, leading to the prompt emission and then it decreases, just at the right time (and before all the rotational energy is exhausted) to a lower level in which the weaker magnetar powers (using the remaining ro ...
lecture2_3
... •Study their motions, measure their speeds •Fundamental to understand the evolution of the sources and how their interact with each other (e.g. merging, collisions) •Measure their redshift, determine their distance from us •Fundamental to chart the large-scale structure of the Universe and to study ...
... •Study their motions, measure their speeds •Fundamental to understand the evolution of the sources and how their interact with each other (e.g. merging, collisions) •Measure their redshift, determine their distance from us •Fundamental to chart the large-scale structure of the Universe and to study ...