Cassiopeia A

	NASA video on YouTube:		Astronomy Picture of the Day:
	A SUPERFLUID CORE in CASSIOPEIA A
	SCIENCE@NASA video on YouTube:

THE TWO PAPERS

Physical Review Letters:

The paper: Rapid Cooling of the Neutron Star in Cassiopeia A Triggered by Neutron Superfluidity in Dense Matter
D. Page, M. Prakash, J.M Lattimer, & A. W. Steiner, Phys. Rev. Lett. 106, p. 081101 (2011)
[NASA/ADS abstract page of the paper] [arXiv e-print: http://lanl.arxiv.org/abs/1011.6142]

Viewpoint about the paper: "A Stellar Superfluid" (with free access to the original paper) (by Nicolas Chamel)

Royal Astronomical Society

The paper: Cooling neutron star in the Cassiopeia A supernova remnant: evidence for superfluidity in the core
P. S. Shternin, D. G. Yakovlev, C. O. Heinke, W. C. G. Ho, & D. J. Patnaude, Mon. Not. R. Astron. Soc. in press
[NASA/ADS abstract page of the paper] [arXiv e-print: http://lanl.arxiv.org/abs/1012.0045]

Press Release: "Superfluid and superconductor discovered in a star's core"

STORIES about the TWO PAPERS

NASA & Chandra X-Ray Observatory Center:

Photo Album: "Cassiopeia A: NASA's Chandra Finds Superfluid in Neutron Star's Core" (from Peter Edmonds)
                            and same at NASA main site, CHANDRA.SI, and and Marshall Space Flight Center.
                            Traducción al español: "Descubierto un superfluido en estrella de neutrones" en Universo Doppler.

Press Room: "NASA's Chandra Finds Superfluid in Neutron Star's Core" (from Peter Edmonds)
                          and same at NASA main site, and CHANDRA.SI.
                          Reposted at Smithsonian Science: "Astronomers detect bizarre superfluid in core of neutron star"
                          Traducción al español: "Mexicano detecta superfluido en estrella" en El Universal (Mexico)
                          Traduction française: "Le télescope Chandra découvre du superfluide dans le noyau d'un étoile à neutrons" (Guy Doyen)

Chronicles Article: "The Race to Explain a Star's Mysterious Cooling" (by Peter Edmonds) "The Story Behind the Scene"

Supplementary material:    Images of Cas A/Superfluidity      Animations of Cas A/Superfluidity

UK Space Agency: "Chandra Observatory finds superfluid in neutron star's core"

Knight Science Journalism Tracker : web site at MIT which tracks new about Cassiopeia A (among other things)

SELECTION of TOP STORIES	Date published
American Physical Society's Physics : "A Stellar Superfluid" (by Nicolas Chamel)	Feb. 22, 2011
Institute Of Physics's PhysicsWorld : "Neutron Star Has Superfluid Core" (by Edwin Cartlidge)	Mar. 2, 2011
Nature : "Superfluid State for Galaxy's Youngest Neutron Star?" (by Kate McAlpine)	Feb. 1, 2011
Science : "Neutron Star Provides Direct Evidence for Bizzare Type of Nuclear Matter" (by Adrian Cho)	Feb. 25, 2011
and shortened version in print : "Weird Matter Seen in Neutron Star" (subscription required)	Mar. 3, 2011

ALL STORIES	Date published
Nature News: "Superfluid state for Galaxy's youngest neutron star?" (by Kate McAlpine) with a quote from Fridolin Weber -----> Traducción español (en 'Ciencia Kanija' !)	Feb. 1, 2011
New Scientist: "Neutron star seen forming exotic new state of matter" (by Rachel Courtland) with a quote from Cole Miller	Feb. 4, 2011
Science News: "Supernova to superfluid" (by Devin Powel) with a quote from Oleg Gnedin	Feb. 4, 2011
UNAM - Instituto de Astronomía: "Se comprueba el estado de superfluidez en la estrella de neutrones de Cassiopeia A"	Feb. 14, 2011
UNAM - Dirección General de Comunicación Social: "Se comprueba el estado de superfluidez en la estrella de neutrones de Cassiopeia A"	Feb. 14, 2011
Gaceta UNAM: "Comprueban el estado de superfluidez en una estrella de neutrones" (by Patricia López)	Feb. 17, 2011
La Jornada: "Comprueban superfluidez en estrella de neutrones"	Feb. XX, 2011
Ohio University: "NASA study reveals mysteries of neutron star"	Feb. XX, 2011
Space.com: "Exploded Star Reveals Strange New Matter" (by ?)	Feb. 23, 2011
Scientific Blogging: "Cassiopeia A: Superfluid Found In Neutron Star's Core" (by 'News Staff')	Feb. 23, 2011
National Geographic: "Superfluid Star"	Feb. 24, 2011
Columbus Dispatch (Ohio): "Strange stuff: Scientists find 'superfluid' in neutron star"	Feb. 24, 2011
USA Today: "Video: Neutron star hides superfluid heart" (by Dan Vergano) with a quote from Sanjay Reddy	Feb. 24, 2011
Astronomy: "Superfluid and superconductor discovered in star's core" (repost of the RAS press release)	Feb. 24, 2011
JSOnline (Milwaukee Sentinel): "Weird science inside a neutron star" (by Mark Johnson)	Feb. 24, 2011
Science: "Neutron Star Provides Direct Evidence for Bizzare Type of Nuclear Matter" (by Adrian Cho) with a quote from Krishna Rajagopal	Feb. 25, 2011
Wired Science: "Exotic Superfluid Found in Ultra-Dense Stellar Corpse" (by Lisa Grossman) with a quote from Bennett Link	Feb. 25, 2011
News Today: "Video: Chandra Captures the First Direct Evidence of Superfluids at the Heat of Neutron Stars" ('dual eccentric teams of researchers ...' :)	Feb. 25, 2011
El Universal: "Mexicano detecta superfluído en estrella" (traducción del comunicado de la NASA)	Feb. 26, 2011
Edmonton Journal: " 'Weird physics found in frictionless fluid inside neutron stars" reposted in Canada.com	Feb. 27, 2011
Stony Brook News: "Researchers Have Discovered The First Direct Evidence For A Superfluid at The Core of A Neutron Star Discovered"	Mar. 1, 2011
Physics World: "Neutron star has superfluid core" (by Edwin Cartlidge) with quotes from Fridolin Weber and Marcelo Baldo	Mar. 2, 2011
Astronomy & Geophysics: "Superfluid in neutron stars" (access requires subscription)	Mar. 21, 2011
CERN Courier: "Superfluidity at wok in neutron star's core" (by Marc Tuerler)	Mar. 30, 2011
Academia Mexicana de Ciencias: "La NASA promueve en YouTube investigación astronómica mexicana"	Abr. 28, 2011
UNAM - Dirección General de Comunicación Social: "Estrellas de neutrones: pequeñas, densas y superfluidas"	Jun. 1, 2011
Revista Digital Universitaria (UNAM): "Estrellas de neutrones y superfluidos. Entrevista con Dany Page"	Jun. 1, 2011
El Gluón (I. de Física, UNAM): "Superfluidez en Estrellas de Neutrones" (Dany Page) El Gluón, vol. 16 (pdf)	May, 2011
Fellow GEEK: "Cassiopeia A might have a Core made of Superfluid"	July, 2011

Previous releases:
Astronomy Now: "Chilling out on the youngest neutron star" (by Keith Cooper)	Apr. 15, 2010

En FRANÇAIS:

Guy Doyen: "Le télescope Chandra découvre du superfluide dans le noyau d'un étoile à neutrons"
Ciel & Espace: "Un Astre au Coeur Liquide dans la Constellation de Cassiopée"
Astronomie amateur: "Un coeur superfluide dans l'étoile à neutrons: Cassiopée A"
Du ciel et de la terre: "Cassiopeia A, épisode 5: des superfluides supraconducteurs"
Pour La Science: "Un coeur superfluide dans les étoiles à neutrons" (par Philippe Ribeau-Gésippe)

Complementary readings:

Astronomy magazine

"Young and getting cooler: the early life of a neutron star" (April 20, 2010)
"Carbon atmosphere discovered on neutron star" (Nov. 4, 2009)
"Cassiopeia A comes alive across time and space" (Jan. 6, 2009)

YouTube videos on Cassiopeia A:

- Cassiopeia A Supernova Explosion : artist rendition of the supernova explosion.
- Cassiopeia A: 3D Fly-through : 3D reconstruction of the supernova remnant
- A Tour of Cassiopeia A :
- Time Lapse Movie of Cassiopeia A : shows the expansion of the remnant in 4 Chandra observation iin 2000, 2002, 2004, 2007: the very same observations which, as Craig Heinke & Wynn Ho recently found, contain the information about the cooling of the neutron star !

A SUPERFLUID CORE in CASSIOPEIA A