Solar observation

Xem 1-15 trên 15 kết quả Solar observation
  • Exciting new observational and theoretical advances lead today's solar physicists to challenge many of the predictions of even recent models. This volume summarizes the major questions at the forefront of solar physics theory and observations, and proposes priority recommendations to explore these questions.

    pdf72p camnhung_1 13-12-2012 24 4   Download

  • Abstract The year 2008 marked the one hundredth anniversary of the observational discovery by George Ellery Hale of magnetic field in sunspots (Hale in Astrophys. J. 28:315–343, 1908). This observation, the first to suggest a direct link between the best-known variable features on the Sun and magnetism, started a line of research that has widened considerably over the last 100 years and is continuing today. Knowledge about all aspects of the Sun has increased in a remarkable way over the past few decades....

    pdf0p tom_123 14-11-2012 14 3   Download

  • in sunlight. This resulted in the development of a wide variety of sophisticated and elegant sundials, which became the standard timekeepers. Sundials were also used as reference for other modes of time-keeping such as hourglasses. Time kept by this method is called apparent solar time. The time between successive appearances of the Sun at the local meridian defines the apparent solar day. Because of Earth’s elliptical orbit, the angular distance it covers per day varies. It moves more rapidly in winter when it approaches perihelion than in summer when it’s near aphelion....

    pdf156p nhulan0908 30-09-2012 27 7   Download

  • We present the proceedings from the workshop entitled Scientific Detectors for Astronomy 2005, a weeklong meeting held in Taormina, Sicily during 19-25 June 2005. This was the sixth workshop of this series, and the fourth with hardcover proceedings. By all measures, this workshop surpassed the previous meetings. The primary purpose of any technical meeting is the exchange of scientific and engineering information.

    pdf805p tom_123 14-11-2012 25 7   Download

  • The distinction between geophysics and astronomy was once clear. Events on Earth constituted the realm of geophysics, while astronomy encompassed objects that are located many light years from the Sun and Earth. Interstellar clouds were “out there”, where they could be observed from isolated observatories nestled under the starry skies of the world’s deserts. Geology relied on shovels and drill bits to obtain samples of mud and ice that contained clues to the paleoclimate.

    pdf430p tom_123 14-11-2012 26 5   Download

  • In this book we provide a comprehensive introduction into the basic physics of phenomena in the solar corona. Solar physics has evolved over three distinctly different phases using progressively more sophisticated observing tools. The first phase of naked-eye observations that dates back over several thousands of years has been mainly concerned with observations and reports of solar eclipses and the role of the Sun in celestial mechanics.

    pdf0p tom_123 14-11-2012 21 4   Download

  • The magnetosphere is an open system that interacts with the solar wind. In this system, solar wind energy continuously permeates different regions of the magnetosphere through electromagnetic processes, which we can well describe in terms of current systems. In fact, our ability to use various methods to study magnetospheric current systems has recently prompted significant progress in our understanding of the phenomenon.

    pdf37p haiduong_1 27-02-2013 22 4   Download

  • The Earth is the only planet in our solar system that supports life. The complex process of evolution occurred on Earth only because of some unique environmental conditions that were present: water, an oxygen-rich atmosphere, and a suitable surface temperature. Climate change refers to a statistically significant variation in either the mean state of the climate or in its variability, persisting for an extended period (typically decades or longer).

    pdf0p phoebe75 19-02-2013 13 3   Download

  • This book provides readers with a clear progress to theoretical and observational astrophysics. It is not surprising that astrophysics is continually growing because very sophisticated telescopes are being developed and they bring the universe closer and make it accessible. Astrophysics Book presents a unique opportunity for readers to demonstrate processes do occur in Nature.

    pdf0p qsczaxewd 22-09-2012 33 8   Download

  • The cordial co-operation of many amateur and professional astronomers in the very successful observations of the Solar Eclipse of January 1, 1889, has again brought forward the desirability of organizing an Astronomical Society of the Pacific, in order that this pleasant and close association may not be lost, either as a scientific or as a social force. You are respectfully invited to become a member of this organization, and to do your part towards making it useful in our community.

    pdf127p window1234 22-12-2012 28 5   Download

  • The purpose of this monograph is to formulate a quantitative and self-consistent theoretical approach to wave–particle interactions occurring in space plasmas, and present a logical development of the subject. In the Earth’s magnetosphere, Nature has given us a plasma laboratory that is accessible to observations made by radio, magnetic and electric instruments on the ground, and a great variety of instruments aboard rockets and Earth-orbiting satellites. Spacecraft are making similar observations in the more distant solar system.

    pdf366p tom_123 14-11-2012 13 3   Download

  • This textbook is intended as an introduction to the physics of solar and stellar coronae, emphasizing kinetic plasma processes. It is addressed to observational astronomers, graduate students, and advanced undergraduates without a background in plasma physics. Coronal physics is today a vast field with many different aims and goals. Sorting out the really important aspects of an observed phenomenon and using the physics best suited for the case is a formidable problem.

    pdf320p tom_123 14-11-2012 17 2   Download

  • The Moon is the nearest member of the Solar system to Earth. Humans from the earliest times have found the Moon to be an object of great interest and a source of speculation as to the meaning of the light and dark markings on its surface. The discovery of the telescope and its use by Galileo in 1610 to observe the Moon set these speculations at rest by revealing the true nature of the Moon’s surface. As telescopes improved so did our knowledge of the Moon’s features. The Moon is also the only body in the Solar system (apart from Earth itself) on which humans have visited and...

    pdf0p bachduong1311 10-12-2012 11 2   Download

  • Discovering what lies behind a hill or beyond a neighborhood can be as simple as taking a short walk. But curiosity and the urge to make new dis- coveries usually require people to undertake journeys much more adven- turesome than a short walk, and scientists oft en study realms far removed from everyday observation—sometimes even beyond the present means of travel or vision.

    pdf0p cronus75 14-01-2013 11 2   Download

  • Four hundred years ago, the Universe changed. Or, at least, our perception of it did, thanks to Galileo Galilei’s scrutiny of the night sky with a telescope. Within a couple of years, his observations of the Moon, phases of Venus and satellites of Jupiter shattered the old Ptolemaic model of our Solar System. To the church’s dismay, Earth assumed its rightful place as one of several planets orbiting the Sun (see page 28). Marking Galileo’s anniversary, the International Year of Astronomy seeks to remind us of the humbling nature of gazing at the heavens.

    pdf136p camchuong_1 11-12-2012 16 1   Download

Đồng bộ tài khoản