Are There Rotation Measure Gradients Across Active Galactic Nuclei Jets

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Are There Rotation Measure Gradients Across Active Galactic Nuclei Jets?

Author : Gregory Benjamin Taylor
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (699 download)

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Book Synopsis Are There Rotation Measure Gradients Across Active Galactic Nuclei Jets? by : Gregory Benjamin Taylor

Download or read book Are There Rotation Measure Gradients Across Active Galactic Nuclei Jets? written by Gregory Benjamin Taylor and published by . This book was released on 2010 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on multi-frequency polarimetry very long baseline interferometry observations of active galactic nuclei using the Very Long Baseline Array. These observations are used to construct images of the Faraday rotation measure (RM) in J1613+342, Mrk 501, 3C 371, and BL Lac. Despite having resolved the jets in total intensity and polarization for three of these sources no RM gradients are found. This is in contrast to the large fraction of sources with RM gradients now claimed in the literature and invoked as evidence in support of helical magnetic fields. We propose objective criteria for establishing what constitutes an RM gradient. Furthermore, although we note the absence of simple, monotonic gradients, comparison with simulations could reveal systematic changes in the RM that may be masked by a varying jet orientation.

Observations and Simulations of Parsec-scale Jets in Active Galactic Nuclei

Author : Amy Jo Mioduszewski
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Observations and Simulations of Parsec-scale Jets in Active Galactic Nuclei by : Amy Jo Mioduszewski

Download or read book Observations and Simulations of Parsec-scale Jets in Active Galactic Nuclei written by Amy Jo Mioduszewski and published by . This book was released on 1996 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

How electrostatic fields generated by cosmic rays cause the expansion of the nearby universe

Author : Antonio Codino
Publisher : Società Editrice Esculapio
ISBN 13 :
Total Pages : 239 pages
Book Rating : 4.2/5 (22 download)

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Book Synopsis How electrostatic fields generated by cosmic rays cause the expansion of the nearby universe by : Antonio Codino

Download or read book How electrostatic fields generated by cosmic rays cause the expansion of the nearby universe written by Antonio Codino and published by Società Editrice Esculapio. This book was released on 2022-12-15 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: The positive electric charge transported by the cosmic radiation while migrating from the interiors of galaxy clusters toward the outer intergalactic space, slowly but inevitably, uncovers a negative electric charge of the same amount inside galaxy clusters, where it is mostly retained. Electrons constitute the negative electric charge inside galaxy clusters. The negative charge and the positive one of the overflowed cosmic nuclei in the intergalactic space cannot be neutralized due to the separating, huge distances. After time intervals of a few billion years, electrostatic repulsion among galaxy clusters initiates to contrast gravity and, at longer time spans, dominates. The electrostatic repulsion among galaxy clusters, which always store negative electric charges, determines in a few billion years, a general receding motion of cosmic matter, including smaller celestial bodies dragged in by galaxy clusters. It will be proved that the general receding motion of cosmic matter occurs with increasing velocities of galaxy clusters as far as the corresponding distances from the Earth augment.

The Formation and Disruption of Black Hole Jets

Author : Ioannis Contopoulos
Publisher : Springer
ISBN 13 : 3319103563
Total Pages : 273 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis The Formation and Disruption of Black Hole Jets by : Ioannis Contopoulos

Download or read book The Formation and Disruption of Black Hole Jets written by Ioannis Contopoulos and published by Springer. This book was released on 2014-11-10 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the phenomenology displayed by relativistic jets as well as the most recent theoretical efforts to understand the physical mechanisms at their origin. Relativistic jets have been observed and studied in Active Galactic Nuclei (AGN) for about half a century and are believed to be fueled by accretion onto a supermassive black hole at the center of the host galaxy. Since the first discovery of relativistic jets associated with so-called "micro-quasars" much more recently, it has seemed clear that much of the physics governing the relativistic outflows in stellar X-ray binaries harboring black holes and in AGN must be common, but acting on very different spatial and temporal scales. With new observational and theoretical results piling up every day, this book attempts to synthesize a consistent, unified physical picture of the formation and disruption of jets in accreting black-hole systems. The chapters in this book offer overviews accessible not only to specialists but also to graduate students and astrophysicists working in other areas. Covered topics comprise Relativistic jets in stellar systems Launching of AGN jets Parsec-scale AGN jets Kiloparsec-scale AGN jets Black hole magnetospheres Theory of relativistic jets The structure and dynamics of the inner accretion disk The origin of the jet magnetic field X-ray observations, phenomenology, and connection with theory

The Central Engine of Active Galactic Nuclei

Author : Luis C. Ho
Publisher :
ISBN 13 :
Total Pages : 830 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Central Engine of Active Galactic Nuclei by : Luis C. Ho

Download or read book The Central Engine of Active Galactic Nuclei written by Luis C. Ho and published by . This book was released on 2007 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Active Galactic Nuclei

Author : Volker Beckmann
Publisher : John Wiley & Sons
ISBN 13 : 352766680X
Total Pages : 390 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Active Galactic Nuclei by : Volker Beckmann

Download or read book Active Galactic Nuclei written by Volker Beckmann and published by John Wiley & Sons. This book was released on 2013-08-29 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active Galactic Nuclei This AGN textbook gives an overview on the current knowledge of the Active Galacitc Nuclei phenomenon. The spectral energy distribution will be discussed, pointing out what can be observed in different wavebands. The different physical models are presented together with formula important for the understanding of AGN physics. Furthermore, the authors discuss the AGN with respect to its environment, host galaxy, feedback in galaxies and in clusters of galaxies, variability, etc. and finally the cosmological evolution of the AGN phenomenon. This book includes phenomena based on new results in the X-Ray and gamma-ray domain from new telescopes such as Chandra, XMM-Newton, the Fermi Gamma-Ray Space Telescope, and the VHE regime not mentioned so far in AGN books. Those and other new developments as well as simulations of AGN merging events and formations, enabled through latest super-computing capabilities. From the contents: The observational picture of AGN Radiative processes The central engine AGN types and unification AGN through the electromagnetic spectrum AGN variability Environment Quasars and cosmology Formation, evolution and the ultimate fate of AGN What we do not know (yet)

The Physics and Evolution of Active Galactic Nuclei

Author : Hagai Netzer
Publisher : Cambridge University Press
ISBN 13 : 1107021510
Total Pages : 369 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis The Physics and Evolution of Active Galactic Nuclei by : Hagai Netzer

Download or read book The Physics and Evolution of Active Galactic Nuclei written by Hagai Netzer and published by Cambridge University Press. This book was released on 2013-09-16 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive introduction to the theory underpinning our study of active galactic nuclei and the ways we observe them.

Exploring the Environment of High Rotation Measure Active Galactic Nuclei Through Wide-band Radio Spectropolarimetry Observations

Download Exploring the Environment of High Rotation Measure Active Galactic Nuclei Through Wide-band Radio Spectropolarimetry Observations PDF Online Free

Author : Alice Pasetto
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (974 download)

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Book Synopsis Exploring the Environment of High Rotation Measure Active Galactic Nuclei Through Wide-band Radio Spectropolarimetry Observations by : Alice Pasetto

Download or read book Exploring the Environment of High Rotation Measure Active Galactic Nuclei Through Wide-band Radio Spectropolarimetry Observations written by Alice Pasetto and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

An Introduction to Active Galactic Nuclei

Author : Bradley M. Peterson
Publisher : Cambridge University Press
ISBN 13 : 9780521479110
Total Pages : 258 pages
Book Rating : 4.4/5 (791 download)

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Book Synopsis An Introduction to Active Galactic Nuclei by : Bradley M. Peterson

Download or read book An Introduction to Active Galactic Nuclei written by Bradley M. Peterson and published by Cambridge University Press. This book was released on 1997-02-13 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: How can we test if a supermassive black hole lies at the heart of every active galactic nucleus? What are LINERS, BL Lacs, N galaxies, broad-line radio galaxies and radio-quiet quasars and how do they compare? This timely textbook answers these questions in a clear, comprehensive and self-contained introduction to active galactic nuclei - for graduate students in astronomy and physics. The study of AGN is one of the most dynamic areas of contemporary astronomy, involving one fifth of all research astronomers. This textbook provides a systematic review of the observed properties of AGN across the entire electromagnetic spectrum, examines the underlying physics, and shows how the brightest AGN, quasars, can be used to probe the farthest reaches of the Universe. This book serves as both an entry point to the research literature and as a valuable reference for researchers in the field.

Cosmic Plasmas and Electromagnetic Phenomena

Author : Athina Meli
Publisher : MDPI
ISBN 13 : 3039214659
Total Pages : 264 pages
Book Rating : 4.0/5 (392 download)

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Book Synopsis Cosmic Plasmas and Electromagnetic Phenomena by : Athina Meli

Download or read book Cosmic Plasmas and Electromagnetic Phenomena written by Athina Meli and published by MDPI. This book was released on 2019-10-25 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past few decades, plasma science has witnessed a great growth in laboratory studies, in simulations, and in space. Plasma is the most common phase of ordinary matter in the universe. It is a state in which ionized matter (even as low as 1%) becomes highly electrically conductive. As such, long-range electric and magnetic fields dominate its behavior. Cosmic plasmas are mostly associated with stars, supernovae, pulsars and neutron stars, quasars and active galaxies at the vicinities of black holes (i.e., their jets and accretion disks). Cosmic plasma phenomena can be studied with different methods, such as laboratory experiments, astrophysical observations, and theoretical/computational approaches (i.e., MHD, particle-in-cell simulations, etc.). They exhibit a multitude of complex magnetohydrodynamic behaviors, acceleration, radiation, turbulence, and various instability phenomena. This Special Issue addresses the growing need of the plasma science principles in astrophysics and presents our current understanding of the physics of astrophysical plasmas, their electromagnetic behaviors and properties (e.g., shocks, waves, turbulence, instabilities, collimation, acceleration and radiation), both microscopically and macroscopically. This Special Issue provides a series of state-of-the-art reviews from international experts in the field of cosmic plasmas and electromagnetic phenomena using theoretical approaches, astrophysical observations, laboratory experiments, and state-of-the-art simulation studies.

Rotating Jet Phenomena in Active Galactic Nuclei

Author : Frank Michael Rieger
Publisher :
ISBN 13 :
Total Pages : 117 pages
Book Rating : 4.:/5 (248 download)

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Book Synopsis Rotating Jet Phenomena in Active Galactic Nuclei by : Frank Michael Rieger

Download or read book Rotating Jet Phenomena in Active Galactic Nuclei written by Frank Michael Rieger and published by . This book was released on 2000 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Active Galactic Nuclei

Author : Francoise Combes
Publisher : John Wiley & Sons
ISBN 13 : 1394163711
Total Pages : 324 pages
Book Rating : 4.3/5 (941 download)

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Book Synopsis Active Galactic Nuclei by : Francoise Combes

Download or read book Active Galactic Nuclei written by Francoise Combes and published by John Wiley & Sons. This book was released on 2022-08-23 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: All galaxies host a super-massive black hole in their center. These black holes grow their mass in symbiosis with their host galaxy and moderate their star formation. When matter is driven towards the nucleus, an accretion disk is formed to transfer angular momentum and considerable energy is released when the material falls into the black hole: this is the phenomenon of active galactic nuclei (AGN). A nucleus can shine one thousand times more brightly than the entire galaxy with its 200 billion stars. The nuclear activity can take many forms, from very powerful quasars to more ordinary Seyfert galaxies, passing by radio-galaxies, which eject a collimated plasma at ten times the radius of the galaxy. This book examines all of these manifestations and presents a unified view. When two galaxies merge, a binary black hole is formed and the two black holes will spiral inwards and merge, emitting long gravitational waves, which could be detected by the future LISA satellite.

Multi-scale Structure Formation and Dynamics in Cosmic Plasmas

Author : Andre Balogh
Publisher : Springer
ISBN 13 : 149393547X
Total Pages : 357 pages
Book Rating : 4.4/5 (939 download)

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Book Synopsis Multi-scale Structure Formation and Dynamics in Cosmic Plasmas by : Andre Balogh

Download or read book Multi-scale Structure Formation and Dynamics in Cosmic Plasmas written by Andre Balogh and published by Springer. This book was released on 2016-02-02 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers eleven coordinated reviews on multi-scale structure formation in cosmic plasmas in the Universe. Observations and theories of plasma structures are presented in all relevant astrophysical contexts, from the Earth’s magnetosphere through heliospheric and galactic scales to clusters of galaxies and the large scale structure of the Universe. Basic processes in cosmic plasmas starting from electric currents and the helicity concept governing the dynamics of magnetic structures in planet magnetospheres, stellar winds, and relativistic plasma outflows like pulsar wind nebulae and Active Galactic Nuclei jets are covered. The multi-wavelength view from the radio to gamma-rays with modern high resolution telescopes discussed in the book reveals a beautiful and highly informative picture of both coherent and chaotic plasma structures tightly connected by strong mutual influence. The authors are all leading scientists in their fields, making this book an authoritative, up‐to‐date and enduring contribution to astrophysics.

Issues in Astronomy and Astrophysics: 2011 Edition

Author :
Publisher : ScholarlyEditions
ISBN 13 : 146496369X
Total Pages : 2981 pages
Book Rating : 4.4/5 (649 download)

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Book Synopsis Issues in Astronomy and Astrophysics: 2011 Edition by :

Download or read book Issues in Astronomy and Astrophysics: 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 2981 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Astronomy and Astrophysics / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Astronomy and Astrophysics. The editors have built Issues in Astronomy and Astrophysics: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Astronomy and Astrophysics in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Astronomy and Astrophysics: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Cosmic Magnetism,

Author : Percy Seymour
Publisher : CRC Press
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.:/5 (45 download)

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Book Synopsis Cosmic Magnetism, by : Percy Seymour

Download or read book Cosmic Magnetism, written by Percy Seymour and published by CRC Press. This book was released on 1986 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of extraterrestrial magnetic fields is a relatively new one, confirmation of the existance of the first such field (that of our Sun) having come a s late as 1908. In the past 30 years a great ammount of knowledge has been accumulated on Cosmic Magnetism, which has turned out to be a truly fascinating topic for study. Percy Seymour's book is the first to deal with the topic in a non-mathematical way, and he offers a fine introduction to his subject. The first three chapters consolidate our knowledge on magnetism in general and the magnetic field of the Earth, as well as discussing the reasons for studying astronomy and cosmic magnetism in particular. The remainder of the book is devoted to the main areas of cosmic magnetism - solar, plantetary and interplanetary fields, fields in stars and pulsars, fields of the milky way and fields in other galaxies. Cosmic Magnetism in an ideal book for sixth-formers and undergraduates studying physics or astronomy and will also appeal to amateur astronomers. as previous work on this topic has been 'hidden' in specialised academic journals.

Quasars and Active Galactic Nuclei

Author : Marshall Harris Cohen
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.X/5 (4 download)

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Book Synopsis Quasars and Active Galactic Nuclei by : Marshall Harris Cohen

Download or read book Quasars and Active Galactic Nuclei written by Marshall Harris Cohen and published by . This book was released on 1995 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Jets from Stars and Galactic Nuclei

Author : Wolfgang Kundt
Publisher : Springer
ISBN 13 :
Total Pages : 312 pages
Book Rating : 4.:/5 (43 download)

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Book Synopsis Jets from Stars and Galactic Nuclei by : Wolfgang Kundt

Download or read book Jets from Stars and Galactic Nuclei written by Wolfgang Kundt and published by Springer. This book was released on 1996-05-15 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jets are ubiquitous in the Universe, but ill-understood. Conservative books base their interpretations on focused stellar winds, ejected "bullets", black-hole central engines, and in-situ upgrading of electron energies via shocks. This volume, however, attempts a uniform interpretation of the bipolar-flow family, involving extremely relativistic pair plasma as the jet substance, and rotating magnets (possibly burning disks) as the central engines. Among the discussed sources are SS 433, YSO jets, planetary nebulae, our galactic center, and the class of extragalactic QSOs, both radio-loud and radio-quiet.