PPT-EARLY DAYS OF X-RAY ASTRONOMY

GEORGE WCLARK MIT Kavli Institute for Astrophysics and Space Research PIONEERS OF HIGHENERGY XRAY ASTRONOMY ALLSKY HIGHENERGY GAMMARAY MAPS FROM OSO3 AND THE FERMI OBSERVATORY NESTED XRAY CONCENTRATOR. Working Group. Report to C 40. IAU General . Asssembly. August 6, 2015. Honolulu, HI. Ken Kellermann. NRAO. Outline. Goals of the HRA WG . 2012-2015 . Triennial Report. Deceased . radio astronomers. Conferences. in . Sri Lanka. (. plus how I ended up here in Campos, RJ, . Brasil. ). Prasanna. . Deshapriya. President. Mathematical & Astronomical Society. University of Colombo. Sri Lanka. http://iya2009sl.blogspot.com. . Presented by:-. Mohit. . Shashwat. . Ankit. What is X-ray Astronomy?. X ray astronomy is an observational branch of . astronomy. which deals with the study of x ray observation and detection from astronomical objects.. with matter. Interaction of x-ray photons with matter. . When a beam of x-ray photons passes through matter, its intensity (energy . –. or number of x-ray photons - flowing per second) is reduced: . Path of the Sun between March 21 and March 22. If no axial tilt, motion of sun horizontal only - at noon every day, sun appears at highest point in the sky (culmination) only drifting slightly east against background of stars - represents Mean Sun that would travel on the celestial equator.. 9/11/17. Due . 9/18/17. 1. The eccentricity of a comet is 0.967. Its . semimajor. axis is 17.8 AU. What is its distance from the Sun at perihelion? Aphelion?. 2. An asteroid has a mean orbital radius of 4.12 AU. What is its period?. objects outside the Earth (astronomical objects). Ancient Astronomy. “Ancient” means from . time long past, especially before the end of the Western Roman Empire in 476 A.D.. Many ancient peoples, including in ancient China and India, made detailed observations about the objects in the sky. Astronomy. , derived from the Greek words for . star law. , is the scientific study of all objects beyond our world. . Astronomy is not a “stand-alone” science. . It combines areas from a number of other fields, including mathematics, chemistry, geology, biology and physics. . (17 Years of SN 1987A with Chandra). David Burrows and Kari A. Frank. FOE51 Corvallis June 6, 2017. Built on the work of. PSU Chandra observations:. David Burrows. Sangwook. Park. Judith . By: . Maarya. . H. aq. An . I. ntroduction to Man Ray . Emmanuel . Radnitzky. . 1890-1976. American visual artist. Painter, Photographer, Filmmaker . Invented . Rayographs. . Significant contributor to Dada and Surrealist movements but ties to each were informal . Early Astronomy . Humans have been fascinated by the sky for all time.. Constellations have helped people navigate, tell stories, are the gods that look over humanity.. Constellations are groupings of stars that form images, much like seeing . 1. Ancient Astronomy. Many ancient cultures took a keen interest in the changing nighttime sky. The records and artifacts that have survived until the present make that abundantly clear. . 2. Ancient Astronomy. Liz Hays . (. NASA Goddard Space Flight Center). The Origin of Cosmic Rays. Credit S. . Swordy. Victor Hess and his . “Flight . Ops . Team”, . 1912. From protons. Pion decay. Accelerated protons (p) interact with matter. Visible structures. 1.  - Trachea. 2.  - Hila. 3.  - Lungs. 4.  - Diaphragm. 5.  - Heart. 6.  - Aortic knuckle. 7.  - Ribs. 8.  - Scapulae. 9.  - Breasts. 10.  - Bowel gas. Normal chest X-ray anatomy.