Adhikari Tek Prasad (34 results)

Condition: New. pp. 76.

Condition: New. In English.

Condition: New.

Condition: New.

Condition: New. In English.

Condition: New. pp. 126 1st ed. 2019 edition NO-PA16APR2015-KAP.

Condition: New. 1st ed. 2019 edition NO-PA16APR2015-KAP.

Taschenbuch. Condition: Neu. Druck auf Anfrage Neuware - Printed after ordering - This book presents timely work on the nature of the physical processes underpinning two of the basic characteristics of the gas structure in the innermost region of Active Galactic Nuclei (AGN): ionized outflows and emission line regions. In addition, it describes physics-based methods for estimating the density of the astrophysical plasma surrounding AGN. All numerical computations of the photoionized gas employ the most advanced codes available (CLOUDY and TITAN). Calculations of the radiative transfer are based on the assumption of thermal and ionization equilibrium.Promising preliminary examples of comparison with current observations are included for several individual AGN. All of them suggest that the absorbing/emitting gas should have a density on the order of1012 cm-3. Future observations will provide more objects to verify these results, and will allow us to put constraints on the launch radius of ionized outflows and therefore on the mass loading and kinetic energy outflow rates. These rates, in turn, are crucial to estimating whether the outflows have a significant feedback impact on star formation and metal enrichment in the interstellar medium of the host galaxy. In closing, the book discusses a representative example of applying powerful photoionization techniques to explain the complex physics of the AGN environment.…

Paperback. Condition: Brand New. 148 pages. 9.25x6.10x0.24 inches. In Stock.

Hardcover. Condition: Brand New. 148 pages. 9.25x6.10x0.55 inches. In Stock.

Taschenbuch. Condition: Neu. Photoionization Modelling as a Density Diagnostic of Line Emitting/Absorbing Regions in Active Galactic Nuclei | Tek Prasad Adhikari | Taschenbuch | Springer Theses | xix | Englisch | 2020 | Springer | EAN 9783030227395 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.…

Paperback. Condition: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Condition: New.

Condition: New.

Paperback. Condition: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A systematic search at 100 $mu$m IRAS (Infrared Asronomical Satellite) survey is performed using Sky View Observatory.A new arc-like filamentary structure (size $sim$ 36.35 pc) at R.A. (J2000) = 12$^{h}$29$^{m}$0.33$^{s}$ and Dec. (J2000) = $ $14$^{circ}$56$^{'}$42.0$^{''}$ is found. This structure is found to be located at the distance of 39 pc north-east from a planetary nebula NGC 4361. In order to find the possible candidate of its origin, we used SIMBAD database to locate discrete sources in the region. No other candidate than PN NGC 4361 is observed. In the present work we studied the origin and evolution of this filamentary structure by studying the far infrared flux. For this, ALADIN2.5 software is used for the data reduction. The physical properties of the object and variation of the flux densities are studied. We calculated and studied the temperature and mass profile of the dust.The average temperature of the dust is found to lie in the range 26.26 K to 28.50 K. An offset of $sim$ 2.5 K suggests the presence of moderate sized silicate dust in the structure. The total mass of the filamentary structure is 76 pp. Englisch.…

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - A systematic search at 100 $mu$m IRAS (Infrared Asronomical Satellite) survey is performed using Sky View Observatory.A new arc-like filamentary structure (size $sim$ 36.35 pc) at R.A. (J2000) = 12$^{h}$29$^{m}$0.33$^{s}$ and Dec. (J2000) = $ $14$^{circ}$56$^{'}$42.0$^{''}$ is found. This structure is found to be located at the distance of 39 pc north-east from a planetary nebula NGC 4361. In order to find the possible candidate of its origin, we used SIMBAD database to locate discrete sources in the region. No other candidate than PN NGC 4361 is observed. In the present work we studied the origin and evolution of this filamentary structure by studying the far infrared flux. For this, ALADIN2.5 software is used for the data reduction. The physical properties of the object and variation of the flux densities are studied. We calculated and studied the temperature and mass profile of the dust.The average temperature of the dust is found to lie in the range 26.26 K to 28.50 K. An offset of $sim$ 2.5 K suggests the presence of moderate sized silicate dust in the structure. The total mass of the filamentary structure is.…

Condition: New. Print on Demand pp. 76 2:B&W 6 x 9 in or 229 x 152 mm Perfect Bound on Creme w/Gloss Lam.

Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Adhikari Tek PrasadMr Tek Prasad Adhikari has obtained his M Sc degree in distinction-majoring Astrophysics, in 2011 from Central Department of Physics, Tribhuvan University, Kathmandu, Nepal. Since then, he has been working actively.…

Condition: new. Questo è un articolo print on demand.

Condition: new. Questo è un articolo print on demand.

Condition: New. PRINT ON DEMAND pp. 76.

PF. Condition: New. This item is printed on demand. Brand new book, sourced directly from publisher. Dispatch time is 6-7 days from our warehouse. Book will be sent in robust, secure packaging to ensure it reaches you securely.

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book presents timely work on the nature of the physical processes underpinning two of the basic characteristics of the gas structure in the innermost region of Active Galactic Nuclei (AGN): ionized outflows and emission line regions. In addition, it describes physics-based methods for estimating the density of the astrophysical plasma surrounding AGN. All numerical computations of the photoionized gas employ the most advanced codes available (CLOUDY and TITAN). Calculations of the radiative transfer are based on the assumption of thermal and ionization equilibrium.Promising preliminary examples of comparison with current observations are included for several individual AGN. All of them suggest that the absorbing/emitting gas should have a density on the order of1012 cm-3. Future observations will provide more objects to verify these results, and will allow us to put constraints on the launch radius of ionized outflows and therefore on the mass loading and kinetic energy outflow rates. These rates, in turn, are crucial to estimating whether the outflows have a significant feedback impact on star formation and metal enrichment in the interstellar medium of the host galaxy. In closing, the book discusses a representative example of applying powerful photoionization techniques to explain the complex physics of the AGN environment. 148 pp. Englisch.…

Buch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book presents timely work on the nature of the physical processes underpinning two of the basic characteristics of the gas structure in the innermost region of Active Galactic Nuclei (AGN): ionized outflows and emission line regions. In addition, it describes physics-based methods for estimating the density of the astrophysical plasma surrounding AGN. All numerical computations of the photoionized gas employ the most advanced codes available (CLOUDY and TITAN). Calculations of the radiative transfer are based on the assumption of thermal and ionization equilibrium.Promising preliminary examples of comparison with current observations are included for several individual AGN. All of them suggest that the absorbing/emitting gas should have a density on the order of1012 cm-3. Future observations will provide more objects to verify these results, and will allow us to put constraints on the launch radius of ionized outflows and therefore on the mass loading and kinetic energy outflow rates. These rates, in turn, are crucial to estimating whether the outflows have a significant feedback impact on star formation and metal enrichment in the interstellar medium of the host galaxy. In closing, the book discusses a representative example of applying powerful photoionization techniques to explain the complex physics of the AGN environment. 148 pp. Englisch.…

Kartoniert / Broschiert. Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Nominated as an outstanding PhD thesis by the Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences, Warsaw, Poland&nbspProvides a general overview of the latest research on Active Galactic Nuclei (AGN)&nb.…

Gebunden. Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Nominated as an outstanding PhD thesis by the Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences, Warsaw, Poland&nbspProvides a general overview of the latest research on Active Galactic Nuclei (AGN)&nb.…

Buch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This book presents timely work on the nature of the physical processes underpinning two of the basic characteristics of the gas structure in the innermost region of Active Galactic Nuclei (AGN): ionized outflows and emission line regions. In addition, it describes physics-based methods for estimating the density of the astrophysical plasma surrounding AGN. All numerical computations of the photoionized gas employ the most advanced codes available (CLOUDY and TITAN). Calculations of the radiative transfer are based on the assumption of thermal and ionization equilibrium.Promising preliminary examples of comparison with current observations are included for several individual AGN. All of them suggest that the absorbing/emitting gas should have a density on the order of1012 cm-3. Future observations will provide more objects to verify these results, and will allow us to put constraints on the launch radius of ionized outflows and therefore on the mass loading and kinetic energy outflow rates. These rates, in turn, are crucial to estimating whether the outflows have a significant feedback impact on star formation and metal enrichment in the interstellar medium of the host galaxy. In closing, the book discusses a representative example of applying powerful photoionization techniques to explain the complex physics of the AGN environment.…

Taschenbuch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This book presents timely work on the nature of the physical processes underpinning two of the basic characteristics of the gas structure in the innermost region of Active Galactic Nuclei (AGN): ionized outflows and emission line regions. In addition, it describes physics-based methods for estimating the density of the astrophysical plasma surrounding AGN. All numerical computations of the photoionized gas employ the most advanced codes available (CLOUDY and TITAN). Calculations of the radiative transfer are based on the assumption of thermal and ionization equilibrium.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 148 pp. Englisch.…

Buch. Condition: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This book presents timely work on the nature of the physical processes underpinning two of the basic characteristics of the gas structure in the innermost region of Active Galactic Nuclei (AGN): ionized outflows and emission line regions. In addition, it describes physics-based methods for estimating the density of the astrophysical plasma surrounding AGN. All numerical computations of the photoionized gas employ the most advanced codes available (CLOUDY and TITAN). Calculations of the radiative transfer are based on the assumption of thermal and ionization equilibrium.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 148 pp. Englisch.…