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The Origin Of The Euv Emission In Her X 1
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Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781724073778 Total Pages :38 pages Book Rating :4.0/5 (737 download)
Book Synopsis The Origin of the Euv Emission in Her X-1 by : National Aeronautics and Space Adm Nasa
Download or read book The Origin of the Euv Emission in Her X-1 written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-26 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Her X-1 exhibits a strong orbital modulation of its EUV flux with a large decrease around time of eclipse of the neutron star, and a significant dip which appears at different orbital phases at different 35-day phases. We consider observations of Her X-1 in the EUVE by the Extreme Ultraviolet Explorer (EUVE), which includes data from 1995 near the end of the Short High state, and date from 1997 at the start of the Short High state. The observed EUV lightcurve has bright and faint phases. The bright phase can be explained as the low energy tail of the soft x-ray pulse. The faint phase emission has been modeled to understand its origin. We find: the x-ray heated surface of HZ Her is too cool to produce enough emission; the accretion disk does not explain the orbital modulation; however, reflection of x-rays off of HZ Her can produce the observed lightcurve with orbital eclipses. The dip can be explained by shadowing of the companion by the accretion disk. We discuss the constraints on the accretion disk geometry derived from the observed shadowing. Leahy, D. A. and Marshall, H. Goddard Space Flight Center NASA/CR-1999-209490, NAS 1.26:209490
Book Synopsis Continuing the Challenge of EUV Astronomy by : Steve B. Howell
Download or read book Continuing the Challenge of EUV Astronomy written by Steve B. Howell and published by . This book was released on 2002 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comets And Their Origin by : Uwe Meierhenrich
Download or read book Comets And Their Origin written by Uwe Meierhenrich and published by John Wiley & Sons. This book was released on 2015-02-09 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Divided into two parts, the first four chapters of Comets and their Origin refer to comets and their formation in general, describing cometary missions, comet remote observations, astrochemistry, artificial comets, and the chirality phenomenon. The second part covers the cometary ROSETTA mission, its launch, journey, scientific objectives, and instrumentations, as well as the landing scenario on a cometary nucleus. Along the way, the author presents general questions concerning the origin of terrestrial water and the molecular beginnings of life on Earth, as well as how the instruments used on a space mission like ROSETTA can help answer them. The text concludes with a chapter on what scientists expect from the ROSETTA mission and how its data will influence our life on Earth. As a result, the author elucidates highly topical and fascinating knowledge to scientists and students of various scientific backgrounds, allowing them to work with ROSETTA's data.
Book Synopsis Literature 1979, Part 1 by : Siegfried Böhme
Download or read book Literature 1979, Part 1 written by Siegfried Böhme and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Astrophysics in the Extreme Ultraviolet by : Stuart Bowyer
Download or read book Astrophysics in the Extreme Ultraviolet written by Stuart Bowyer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the beginning of Space Astronomy, the Extreme Ultraviolet band of the spectrum (roughly defined as the decade in energy from 90-900 Å) was deemed to be the `unobservable ultraviolet'. Pioneering results from an EUV telescope on the Apollo-Soyuz Mission in 1975 forcibly demonstrated that this view was incorrect; but it required the all-sky surveys of the English Wide-Field Camera and the Extreme Ultraviolet Explorer to demonstrate the broad potential of this field. Over 700 EUV sources have now been detected. Over 150 researchers from 16 countries gathered to share results in this new field at the International Astronomical Union Colloquium No. 152. Papers were presented on a wide variety of topics including cool star coronae, white dwarf atmospheres and evolution, neutron stars, the Io torus, cataclysmic variable stars, active galactic nuclei, the interstellar medium, winds and atmospheres of early type stars, and EUV plasma diagnostics. Selected manuscripts from this meeting are provided in these Conference Proceedings.
Book Synopsis EUV Sources for Lithography by : Vivek Bakshi
Download or read book EUV Sources for Lithography written by Vivek Bakshi and published by SPIE Press. This book was released on 2006 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive volume, edited by a senior technical staff member at SEMATECH, is the authoritative reference book on EUV source technology. The volume contains 38 chapters contributed by leading researchers and suppliers in the EUV source field. Topics range from a state-of-the-art overview and in-depth explanation of EUV source requirements, to fundamental atomic data and theoretical models of EUV sources based on discharge-produced plasmas (DPP) and laser-produced plasmas, to a description of prominent DPP and LPP designs and other technologies for producing EUV radiation. Additional topics include EUV source metrology and components (collectors, electrodes), debris mitigation, and mechanisms of component erosion in EUV sources. The volume is intended to meet the needs of both practitioners of the technology and readers seeking an introduction to the subject.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Astronomisches Rechen-InstitutARI Publisher :Springer Science & Business Media ISBN 13 :3642517587 Total Pages :1746 pages Book Rating :4.6/5 (425 download)
Book Synopsis Literature 1997, Part 1 by : Astronomisches Rechen-InstitutARI
Download or read book Literature 1997, Part 1 written by Astronomisches Rechen-InstitutARI and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 1746 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. Two volumes are scheduled to appear per year. Volume 67 records 10,903 papers covering besides the classical fields of astronomy and astrophysics such matters as space flights related to astronomy, lunar and planetary probes and satellites, meteorites and interplanetary matter, X rays and cosmic rays, quasars and pulsars. The abstracts are classified under more than one hundred subject categories thus permitting quick surveying of the bulk of material published on the same topic within six months. For instance, this volume records 119 papers on minor planets, 155 papers on supernovae, and 554 papers on cosmology.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Extreme Ultraviolet Astronomy by : Roger F. Malina
Download or read book Extreme Ultraviolet Astronomy written by Roger F. Malina and published by Elsevier. This book was released on 2013-10-22 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of extreme ultraviolet astronomy will see two major satellite observatories to be launched in 1991, one by ESA (ROSAT mission), one by NASA (EUVE mission). These Proceedings discuss the potential for EUV Astronomy, results from recent missions, approved and possible future missions and new developments in EUV technology.
Book Synopsis Astrophysics from Spacelab by : P.L. Bernacca
Download or read book Astrophysics from Spacelab written by P.L. Bernacca and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: A meeting on "Astrophysics. from Spacelab" was held at the Internatio nal Centre for Theoretical Physics, Trieste, in the Autumn of 1976. Scope of the meeting was to bring to the attention of an increasing number of physi cists and astrophysicists, including scientists from developing countries, the new facil ities made available by the combination of the Shuttle and the Spacelab programmes. This book starts from that meeting and includes, together with reports presented in Trieste, duly updated, a few additional reviews on selected to pi cs. In the first part, D.J. Shapland and G. Giampalmo (liThe Shuttle and the Spacelab") present the design and the programmatic data of these advanced transportation systems and orbital laboratories. Vittorio Manno introduces the scientific programmes coordinated and led to execution by the European Space Agency ("ESA Programmes in Astronomy and Astrophys i cs "). J.D. Rosendha 1 (liThe NASA Programmes in Astronomy and Astrophysics") summarizes the activi ties in solar physics, high-energy astrophysics and astronomy planned in the United States of America by the National Aeronautics and Space Administration as well as the expected use of the space shuttle and spacelab in their first year of operation
Book Synopsis Literature 1976, Part 2 by : S. Böhme
Download or read book Literature 1976, Part 2 written by S. Böhme and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 869 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 18 contains literature published in 1976 and received before March 1, 1977; some older liter ature which was received late and which is not recorded in earlier volumes is also included.
Book Synopsis Literature 1983, Part 1 by : S. Böhme
Download or read book Literature 1983, Part 1 written by S. Böhme and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 825 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts aims to present a comprehensive documen tation of the literature concerning all aspects of astronomy, astrophysics, and their border fields. It is devoted to the recording, summarizing, and indexing of the relevant publications throughout the world. Astronomy and Astrophysics Abstracts is prepared by a special department of the Astronomisches Rechen-Institut under the auspices of the International Astronomical Union. Volume 33 records literature published in 1983 and received before August 1, 1983. Some older documents which we received late and which are not surveyed in earlier volumes are included too. We acknowledge with thanks contributions of our colleagues all over the world. We also express our gratitude to all organizations, observatories, and publishers which provide us with complimentary copies of their publications. Starting with Volume 33, all the recording, correction, and data processing work was done by means of computers. The recording was done by our technical staff members Ms. Helga Ballmann, Ms. Mona El-Choura, Ms. Monika Kohl, and Ms. Sylvia Matyssek. Mr. Martin Schlotelburg and Mr. Ulrich Uberall supported our task by careful proofreading. It is a pleasure to thank them all for their encouragement. Heidelberg, September 1983 The Editors Contents Introduction . . . . . . . . . . . . 1 Concordance Relation: ICSU-AB-AAA 3 Abbreviations 10 Periodicals, Proceedings, Books, Activities 001 Periodicals . . . . . . . . . . . 15 002 Bibliographical Publications, Documentation, Catalogues, Atlases 47 003 Books ...... . 51 004 History of Astronomy 58 005 Biography . . 64 006 Personal Notes 65 007 Obituaries . . .
Book Synopsis Apollo-Soyuz Test Project by : Lyndon B. Johnson Space Center
Download or read book Apollo-Soyuz Test Project written by Lyndon B. Johnson Space Center and published by . This book was released on 1977 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Literature 1981, Part 2 by : S. Böhme
Download or read book Literature 1981, Part 2 written by S. Böhme and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 803 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Short-Period Binary Stars: Observations, Analyses, and Results by : Eugene F. Milone
Download or read book Short-Period Binary Stars: Observations, Analyses, and Results written by Eugene F. Milone and published by Springer Science & Business Media. This book was released on 2008-02-21 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores cataclysmic variables with and without strong, overpowering magnetic fields. You’ll read about stars with densities ranging from that of the Sun to the degenerate matter of white dwarfs to the ultra-compact states of neutron stars and black holes. One of the objects examined and discussed is the Double Pulsar, highlighting what observations have told us about fundamental physics.
Book Synopsis Apollo-Soyuz Test Project: Astronomy, earth atmosphere and gravity field, life sciences, and materials processing by : Lyndon B. Johnson Space Center
Download or read book Apollo-Soyuz Test Project: Astronomy, earth atmosphere and gravity field, life sciences, and materials processing written by Lyndon B. Johnson Space Center and published by . This book was released on 1977 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
