Transcript Paul Green - Chandra X-Ray Observatory (CXC)

Chandra Science Workshops
Paul J Green
 CXC-sponsored annual summer workshops focus on X-rayrelated science topics.
 Workshop size (80-120) and length (~2.5 days) engages most
aspects of the topic, advances collaborations.

Topic choice based on proposal pressure, relevance, clamor.
 Advertised via Chandra Announcements, Intl Astro Mtgs list,
AAS, HEAD AAS, HEASARC, HST, XMM
Past Workshops and Conferences
 2011: Structure in Clusters and Groups of Galaxies
 2010: Accretion Processes in X-Rays
 2009: Supernova Remnants and Pulsar Wind Nebulae 2008:
Radio Galaxies in the Chandra Era
 2007: X-Ray Grating Spectroscopy
 2006: Extragalactic Surveys
 2006: Making the Most of the Great Observatories (Pasadena)
 2005: Star Formation in the Era of Three Great Observatories
 2004: X-ray Astrophysical Plasma Diagnostics
 2004: Galaxies Viewed with Chandra
 2002: X-ray Binaries
2011: Structure in Clusters and Groups of
Galaxies in the Chandra Era
 Focused away from surveys, LFs,
cosmology, toward cluster physics
About 80 participants, 40 talks.
 Program, and later presentations, posted on
workshop website
 After workshop, presentations collected,
posted to website; abstracts to ADS with links
2012: X-ray Binaries: Celebrating 50 ears
Since the Discovery of Sco X-1
 July 10-12, same venue
 Historical review
 Topics include individual Galactic XRBs, NS
and BH theory, populations
 Still developing workshop website
2012 X-Ray Binaries Workshop Abstract
In 1962, Scorpius X-1 became the first X-ray source discovered outside
the Solar System. In the 50 years since, X-ray binaries have proven to
be important for studies of fundamental physical processes such as
mass accretion and jet formation. Contemporary X-ray satellites
provide detailed spectroscopic studies of individual Galactic black hole
and neutron star binaries, as well as population studies of low-mass Xray binaries in globular clusters, high-mass X-ray binaries and ultraluminous X-ray sources in starburst galaxies. This meeting will
celebrate the startling discovery of Scorpius X-1, highlight the latest
results in our understanding of the formation of black holes, neutron
stars and X-ray binaries, as well as the use of X-ray binaries for testing
the laws of physics in the extreme environment close to black holes
and neutron stars.
1962: The Discovery of Extra-Solar X-rays
From TIME magazine (01 Nov, 1963):
Professor Philip Morrison of Cornell thinks the X rays may be generated
when starlight picks up energy from high-speed electrons far out in
space. Professor Minoru Oda of M.I.T. figures that the X rays come from
a magnetic field surrounding the edges of the galactic nucleus. British
Cosmologist Fred Hoyle suspects that they may be connected with the
creation of new matter in the vast emptiness between the galaxies....
It may be that charged particles blown out of the sun knock
soft X rays out of the moon, and if this were proved it would give vital
information about the lunar surface, where astronauts may some day land.
"There are things going on in space," says Dr. Rossi, "that are still
unknown. That is what so excites us. We hope that by means of X rays we
can detect some of these phenomena."