imaging_wkshp_all - Harvard-Smithsonian Center for Astrophysics
... • We still do not know how and where the various components of the variable slow solar wind are produced (e.g., “blobs”). UVCS has shown that answering these questions is possible, but cannot make the required observations. Spectroscopic Diagnostics of Solar Wind, CME, and SEP Source Regions ...
... • We still do not know how and where the various components of the variable slow solar wind are produced (e.g., “blobs”). UVCS has shown that answering these questions is possible, but cannot make the required observations. Spectroscopic Diagnostics of Solar Wind, CME, and SEP Source Regions ...
Lyman-α observations of astrospheres
... ejections (CMEs) that are seen on the Sun but not yet detected on stars. Drake et al. (2013) argued that CMEs in active stars could dominate the mass-loss rate based on an extrapolation of solar data, but this process must be tested in realistic models and against stellar CME measurements when they ...
... ejections (CMEs) that are seen on the Sun but not yet detected on stars. Drake et al. (2013) argued that CMEs in active stars could dominate the mass-loss rate based on an extrapolation of solar data, but this process must be tested in realistic models and against stellar CME measurements when they ...
Bulletin of the American Meteorological Society
... and society. Our civilization is increasingly reliant on space-based technologies and so is becoming more vulnerable to space weather effects. Thus space weather is important not only for its scientific value but also because it can help mitigate damage or loss of susceptible technological systems. ...
... and society. Our civilization is increasingly reliant on space-based technologies and so is becoming more vulnerable to space weather effects. Thus space weather is important not only for its scientific value but also because it can help mitigate damage or loss of susceptible technological systems. ...
Interstellar neutral oxygen in a two-shock
... direct relevance to pick-up and anomalous cosmic rays measurements. More precisely, it provides the number and the location of newly created oxygen ions in heliosphere due to ionization and charge-exchange processes, the density distribution of the pickup ions, assuming new born ions are picked up b ...
... direct relevance to pick-up and anomalous cosmic rays measurements. More precisely, it provides the number and the location of newly created oxygen ions in heliosphere due to ionization and charge-exchange processes, the density distribution of the pickup ions, assuming new born ions are picked up b ...
On the origin of the fast solar wind in polar coronal funnels
... replenishing of the spectrum. The kinetic physics of the wavedamping process in the dissipation domain is certainly much more complicated and still not understood well. For a further discussion see Marsch (1999) and references therein. The spatial evolution of the wave energy-density spectrum P is d ...
... replenishing of the spectrum. The kinetic physics of the wavedamping process in the dissipation domain is certainly much more complicated and still not understood well. For a further discussion see Marsch (1999) and references therein. The spatial evolution of the wave energy-density spectrum P is d ...
Sunspots - Academic Program Pages at Evergreen
... 1645 and 1715. This was a period of virtually no sunspot (hence low solar) activity. It was also associated with a “little ice age” during which the river Thames in London froze.23 • Javaraiah, “On long time scales from decades to millenia, the solar luminosity variations associated with solar activ ...
... 1645 and 1715. This was a period of virtually no sunspot (hence low solar) activity. It was also associated with a “little ice age” during which the river Thames in London froze.23 • Javaraiah, “On long time scales from decades to millenia, the solar luminosity variations associated with solar activ ...
145KB - NZQA
... stated that volcanic ash will not stay in the atmosphere long enough to have any effect misunderstood the role volcanic ash would have on solar radiation stated that the sun was directly over the equator all year round misunderstood the role the ocean plays in heating the land referred to how the su ...
... stated that volcanic ash will not stay in the atmosphere long enough to have any effect misunderstood the role volcanic ash would have on solar radiation stated that the sun was directly over the equator all year round misunderstood the role the ocean plays in heating the land referred to how the su ...
Truths and Consequences of Ionizing Radiation: New Science
... • REPT – Relativistic Electron Proton Telescope (> few MeV) • Background rejection techniques successful on all instruments ...
... • REPT – Relativistic Electron Proton Telescope (> few MeV) • Background rejection techniques successful on all instruments ...
EbS97570
... Earth? So was it just the right elements, the right building blocks or was there more information in it when these comets arrived. ...
... Earth? So was it just the right elements, the right building blocks or was there more information in it when these comets arrived. ...
100 Greatest Discoveries - Mr-Hubeny
... blasts. At least some of the bursts have now been linked with distant supernovae — explosions marking the deaths of especially massive stars. Contrast the understanding of gamma ray bursts in the 1960’s with today’s understanding of gamma ray bursts. In the 1960’s scientists believed that gamma ray ...
... blasts. At least some of the bursts have now been linked with distant supernovae — explosions marking the deaths of especially massive stars. Contrast the understanding of gamma ray bursts in the 1960’s with today’s understanding of gamma ray bursts. In the 1960’s scientists believed that gamma ray ...
Coronal Polarization Measurements and
... from each of these sources. This is made possible by the distinct mechanisms that produce each component. The E-corona emits only in well-defined lines, so an off-band image of the continuum can be subtracted from images taken through line filters to eliminate continuum brightness that falls within ...
... from each of these sources. This is made possible by the distinct mechanisms that produce each component. The E-corona emits only in well-defined lines, so an off-band image of the continuum can be subtracted from images taken through line filters to eliminate continuum brightness that falls within ...
Formation of Solar System
... – High density (1000 to 1 million times greater than interstellar medium) – Rich collection of molecules (but mostly H) – 1015 km in diameter – 2000 or so in Milky Way – Favorable places for star formation (and, therefore, perhaps planetary formation) ...
... – High density (1000 to 1 million times greater than interstellar medium) – Rich collection of molecules (but mostly H) – 1015 km in diameter – 2000 or so in Milky Way – Favorable places for star formation (and, therefore, perhaps planetary formation) ...
New Theory of Nuclear Fusion Processes in Sun and other
... zones. Many of these arcs form magnetic connections forming coronal loops flowing with super-hot plasma coming out of fusion zones of electromagnetic fields whereas at other times the ejections rise and fall back under gravity. This super-hot plasma gets shot out at incredible speeds from the surfac ...
... zones. Many of these arcs form magnetic connections forming coronal loops flowing with super-hot plasma coming out of fusion zones of electromagnetic fields whereas at other times the ejections rise and fall back under gravity. This super-hot plasma gets shot out at incredible speeds from the surfac ...
angular momentum in the solar system
... 3 "Many disparate civilizations have, for unknown reasons, assumed beginnings of time occurring a few thousand years B.C."; more specifically, "within a few centuries of 4000 B.C." (ibid., pp. 135, 40). Steele is an atheist (ibid., p. 111) with no interest in showing that the universe is young. 4 Si ...
... 3 "Many disparate civilizations have, for unknown reasons, assumed beginnings of time occurring a few thousand years B.C."; more specifically, "within a few centuries of 4000 B.C." (ibid., pp. 135, 40). Steele is an atheist (ibid., p. 111) with no interest in showing that the universe is young. 4 Si ...
The Sun - Centra
... Sun, travel through the main body called it interior interior.. They travel a zigzag path on their way out, as they are scattered back and forth by particles (mostly electrons). So many interactions occur that it literally takes occur, hundreds of thousands of years for a typical photon to travel fr ...
... Sun, travel through the main body called it interior interior.. They travel a zigzag path on their way out, as they are scattered back and forth by particles (mostly electrons). So many interactions occur that it literally takes occur, hundreds of thousands of years for a typical photon to travel fr ...
Document
... Meteorites can provide accurate information on elemental abundances in the presolar nebula. More precise than solar spectra if data in some cases. Principal source for isotopic information. But some gases escape and cannot be determined this way (for example hydrogen, or noble gases) Not all meteori ...
... Meteorites can provide accurate information on elemental abundances in the presolar nebula. More precise than solar spectra if data in some cases. Principal source for isotopic information. But some gases escape and cannot be determined this way (for example hydrogen, or noble gases) Not all meteori ...
ph507lecnote07
... Photograph of the solar corona during the July, 1991 eclipse, at the peak of the sunspot cycle. At these times, the corona is much less regular and much more extended than at sunspot minimum. Astronomers believe that coronal heating is caused by surface activity on the Sun. The changing shape and si ...
... Photograph of the solar corona during the July, 1991 eclipse, at the peak of the sunspot cycle. At these times, the corona is much less regular and much more extended than at sunspot minimum. Astronomers believe that coronal heating is caused by surface activity on the Sun. The changing shape and si ...
Alfred Lothar Wegener, 1880-1930
... Our planet is connected with our sun with more than light. ON THE NEXT SLIDE , it appears the sun and earth are connected by the stream of charged particles that come from the sun. The Sun produces a hot gas that travels through space at a million miles per hour, carrying particles and magnetism out ...
... Our planet is connected with our sun with more than light. ON THE NEXT SLIDE , it appears the sun and earth are connected by the stream of charged particles that come from the sun. The Sun produces a hot gas that travels through space at a million miles per hour, carrying particles and magnetism out ...
Flares and the chromosphere Hugh S. Hudson and Lyndsay Fletcher
... 1D radiative-transfer physics. Such an approach omits dynamics except for the “microturbulence” factor and much of the interesting plasma physics; for example these models assume Te = Ti everywhere. See Berlicki (2007) and Hudson (2007) for recent reviews about the flaring chromosphere, and for refe ...
... 1D radiative-transfer physics. Such an approach omits dynamics except for the “microturbulence” factor and much of the interesting plasma physics; for example these models assume Te = Ti everywhere. See Berlicki (2007) and Hudson (2007) for recent reviews about the flaring chromosphere, and for refe ...
Conceptual steps towards exploring the fundamental nature of our Sun
... Despite of its plasma state, the solar core is widely regarded as being in a gaseous state. Plasma nature of the solar core has been ignored because of the general assumption that the solar core is quiescent and, therefore, being static, the solar core does not show any peculiar plasma behavior. In ...
... Despite of its plasma state, the solar core is widely regarded as being in a gaseous state. Plasma nature of the solar core has been ignored because of the general assumption that the solar core is quiescent and, therefore, being static, the solar core does not show any peculiar plasma behavior. In ...
4 - WMO
... In response to an action agreed by the Expert Team on Satellite Systems at its fifth meeting (ET-SAT-5, 26-29 April 2010) new material has been developed with the aim to replace the current Chapter on Satellite Observations in the Guide to Meteorological Instruments and Methods of Observation (CIMO ...
... In response to an action agreed by the Expert Team on Satellite Systems at its fifth meeting (ET-SAT-5, 26-29 April 2010) new material has been developed with the aim to replace the current Chapter on Satellite Observations in the Guide to Meteorological Instruments and Methods of Observation (CIMO ...
Solar system - Youngstown City Schools Home
... you a virtual tour of our galactic neighborhood! You’ll find out how long ago the solar system took its first baby steps, as well as the process by which the sun and planets actually formed. Find out about the two different categories of planet in our solar system, and meet each of the individual pl ...
... you a virtual tour of our galactic neighborhood! You’ll find out how long ago the solar system took its first baby steps, as well as the process by which the sun and planets actually formed. Find out about the two different categories of planet in our solar system, and meet each of the individual pl ...
Lecture 2/10 The Sun Ulf Torkelsson 1 The internal structure of the
... Another way to investigate the interior of the Sun is by observing the neutrinos that are produced during the fusion reactions. These neutrinos hardly interact at all with normal matter and for that reason they will pass straight through the Sun in 2.3 seconds, while the photons take 105 years to di ...
... Another way to investigate the interior of the Sun is by observing the neutrinos that are produced during the fusion reactions. These neutrinos hardly interact at all with normal matter and for that reason they will pass straight through the Sun in 2.3 seconds, while the photons take 105 years to di ...
Solar flare
... The transient phenomena occurring in the Solar atmosphere can be grouped together under the term Solar activity: sunspots and faculae occur in the photosphere; flares and spicules belong to the chromosphere; and prominences and coronal structures develop in the corona. All Solar activity phenomena ...
... The transient phenomena occurring in the Solar atmosphere can be grouped together under the term Solar activity: sunspots and faculae occur in the photosphere; flares and spicules belong to the chromosphere; and prominences and coronal structures develop in the corona. All Solar activity phenomena ...
Energetic neutral atom
Energetic neutral atom (ENA) imaging, often described as ""seeing with atoms"", is a technology used to create global images of otherwise invisible phenomena in the magnetospheres of planets and throughout the heliosphere, even to its outer boundary.This constitutes the far-flung edge of the solar system.The solar wind consists of ripped-apart atoms (called plasma) flying out of the Sun. This is mostly hydrogen, that is, bare electrons and protons, with a little bit of other kinds of nuclei, mostly helium. The space between solar systems is similar, but they come from other stars in our galaxy. These charged particles can be redirected by magnetic fields; for instance, Earth's magnetic field shields us from these particles. But, every so often, a few of them steal electrons from neutral atoms they run into. At that point, they become neutral, although they're still moving very fast, and they travel in an exact straight line. These are called Energetic Neutral Atoms. ENA images are constructed from the detection of these energetic neutral atoms.Earth's magnetosphere preserves Earth's atmosphere and protects us from cell-damaging radiation. This region of ""space weather"" is the site of geomagnetic storms that disrupt communications systems and pose radiation hazards to humans traveling at high polar altitudes or in orbiting spacecraft. A deeper understanding of this region is vitally important. Geomagnetic weather systems have been late to benefit from the satellite imagery taken for granted in weather forecasting, and space physics because their origins in magnetospheric plasmas present the added problem of invisibility.The heliosphere protects the entire Solar System from the majority of cosmic rays but is so remote that only an imaging technique such as ENA imaging will reveal its properties. The heliosphere's structure is due to the invisible interaction between the solar wind and cold gas from the local interstellar medium.The creation of ENAs by space plasmas was predicted but their discovery was both deliberate and serendipitous. While some early efforts were made at detection, their signatures also explained inconsistent findings by ion detectors in regions of expected low ion populations. Ion detectors were co-opted for further ENA detection experiments in other low-ion regions. However, the development of dedicated ENA detectors entailed overcoming significant obstacles in both skepticism and technology.Although ENAs were observed in space from the 1960s through 1980s, the first dedicated ENA camera was not flown until 1995 on the Swedish Astrid-1 satellite, to study Earth's magnetosphere.Today, dedicated ENA instruments have provided detailed magnetospheric images from Venus, Mars, Jupiter, and Saturn. Cassini's ENA images of Saturn revealed a unique magnetosphere with complex interactions that have yet to be fully explained. The IMAGE mission's three dedicated ENA cameras observed Earth's magnetosphere from 2000–2005 while the TWINS Mission, launched in 2008, provides stereo ENA imaging of Earth's magnetosphere using simultaneous imaging from two satellites.The first ever images of the heliospheric boundary, published in October 2009, were made by the ENA instruments aboard the IBEX and Cassini spacecraft. These images are very exciting because they challenge existing theories about the region.