Top : Science : Astronomy : Stars :
Neutron Stars
Websites
Brief page containing basic characteristics of neutron stars and how they were discovered.
site exerpt
Neutron stars, pulsars When electron degeneracy pressure can no longer withstand the downwards pull of gravity, the material collapses into a sixth state of matter, known as baryon degenerate matter. In this state of matter, the electrons, which usually orbit the atomic nuclei,...A tutorial on radio pulsars and "The Sounds of Pulsars"
site exerpt
JBO: Introduction to Pulsar Astronomy This tutorial was produced as part of the lecture course given to MSc students at Jodrell bank in 1996. Pulsar Astronomy This short lecture course was given to 4-year students at the University of Manchester within the Frontier of Astrophysics...Radio pulsar abstracts published by the University of Sydney's Research Centre for Theoretical Astrophysics.
http://www.physics.usyd.edu.au/rcfta/psrnews/psrnews.html
Proposed advanced theory of mainstream pulsars being oscillatory and powered by gravitational contraction, rather than rotary.
http://www.s-4.com/pulsar
This site provides a concise definition and description of neutron stars. Suitable for university students.
site exerpt
Lecture 21: Neutron Stars Though a good deal is too strange to be believed, nothing is too strange to have happened Thomas Hardy Key Concepts Most Type II supernovae leave behind an extremely dense neutron star. A neutron star is a compact object supported...This site offers a non-technical discussion about black holes and neutron stars. Topics include what they are, how they form, how we detect them, FAQs and a links page.
site exerpt
Black Holes and Neutron Stars Many people think black holes continually suck in everything like great big cosmic bathtub drains. And what the heck are neutron stars? Understanding the nature of black holes and neutron stars--how they form, what they're like, and how we know...An interactive archive of neutron star atmosphere models, for advanced students and researchers.
site exerpt
Atmospheres of Neutron Stars Welcome to the electronic archive of constructed at the Department of Theoretical Astrophysics of the Ioffe Physical Technical Institute in St.Petersburg, Russia. The Atmosphere Models are developed and computed by George Pavlov, Yura Shibanov and Vyacheslav Zavlin since 1991. The...Includes a small collection of neutron star images and other resources.
site exerpt
Neutron Star (Theory) Group at UNAM Petersburg and their archive of Neutron Star Atmosphere Models. Princeton Pulsar Group EPN Pulsar Data Archive The European Pulsar Network Pulsar Newsletter at RCfTA (Sydney A Catalogue of Galactic supernova Remnants (by D.A. Green, MRAO) The Kilohertz QPO Page (by...Overview of what is known about neutron stars, including a discussion of X-ray bursters.
site exerpt
Neutron Stars It is estimated that there are 108 neutron stars in our galaxy. About 1000 of these have actually been observed by astronomers so far. Neutron stars typically have masses of around 1-2 solar masses and diameters of approximately 10 km....Brief look at the evidence connecting neutron stars with supernovae.
site exerpt
Neutron Stars and Supernovae I supernova explosion leaves a massive core of neutrons behind. this should make a neutron star. or else, if it is too massive, it could make a black hole. Is there any evidence that supernovae are associated with neutron stars?...A personal account by Jocelyn Bell Burnell on the discovery of pulsars.
site exerpt
Cosmic Search Vol. 1, No. 1 Little Green Men, White Dwarfs or Pulsars? We did all the work ourselves and cheerfully sledgehammered all one summer Burnell and the antenna. In all the history of radio astronomy the pulsing signals discovered at Cambridge, England, in 1967 were the most suggestive of an extraterrestrial intelligent...Brief description of neutron stars.
site exerpt
Neutron Stars Introduction Show me related lesson plans Neutron stars Neutron stars are compact objects that are created in the cores of massive stars during supernova explosions. The core of the star collapses, and crushes together every proton with a corresponding electron turning...As one of the research groups of the Jodrell Bank Observatory, we form part of the Department of Physics and Astronomy of the University of Manchester, in the United Kingdom. We have many collaborations with other research groups across the world and, in particular, with the ATNF with whom we are the main partners in the Parkes Multibeam Pulsar Survey
site exerpt
Jodrell Bank Observatory Pulsar Group As one of the research groups of the Jodrell Bank Observatory, we form part of the School of Physics and Astronomy of the University of Manchester, in the United Kingdom. We have many collaborations with other research groups across the...A typical neutron star is the size of a small city, but it may have the mass of as many as three suns.
site exerpt
Neutron Stars Ray image of a supernova remnant and its central neutron star Click on image for full size (40K GIF) ROSAT satellite image courtesy of NASA Neutron Stars are the end point of a massive star's life. When a really massive...An accessible introduction to neutron stars that includes details on their life cycles as well as detailed information on neutron star variants such as x-ray and gamma ray bursters.
site exerpt
Neutron stars Introduction to neutron stars M. Coleman Miller Associate Professor of Astronomy, University of Maryland Welcome to my neutron star page! I need to emphasize that the stuff I have here represents my opinions, and errors aren't the fault of those...An accessible summary of neutron stars and X-ray binaries, presented by the Chandra X-ray Observatory. Includes a comprehensive Q&A section and a selection of quality images.
site exerpt
Chandra Field Guide to X-ray Sources Neutron Stars/X-ray Binaries Even a rock is mostly empty space. This is because matter is made of atoms. An atom is a cloud of electrons orbiting around a nucleus composed of protons and neutrons. The nucleus contains more than 99.9 percent of the...Detailed simulations of binary neutron star collisions, including stills from the movies at different time steps.
site exerpt
Neutron Star Visualization Computation simulating the collision of binary neutron stars. http access.ncsa.uiuc.edu/CoverStories/NeutronStar/neutron_1.html The Scientists Doug Swesty, NCSA Alan Calder, NCSA Edward Wang, NCSA The Data Grid: structured Dimensions: 132x132x132 Data: scalar, log of density, 218 time steps The Visualization David Bock, NCSA...Features images simulating the collision of two neutron stars.
site exerpt
Axisymmetric Collision of Two Neutron Stars About Us NCSA Alliance TeraGrid Expeditions Atmospheric Discovery Community Codes Performance Engineering Data Quest Scientific Portals Scientific Workspaces Outreach EOT Community Partnerships Private Sector Program User Information Getting Started Hardware Software Consulting Training Allocations Accounts a class naMenuItem...Provides technical descriptions of pulsars - focussing on neutron stars, gamma ray pulsars and polar cap or outer gap gamma-ray emission.
site exerpt
Pulsar physics Pulsars are rapidly rotating neutron stars with periods between a few milliseconds and a few seconds, and strong magnetic fields G Neutron stars have a maximum mass of 3 and a radius of 10 km 16, Shapiro et al. 1983...Includes short summaries on neutron stars, including information on pulsars, neutron degeneracy, pulsar examples, binary pulsars and planets around pulsars. This information links to a useful navigable 'mind map' dealing with concepts in physics.
site exerpt
Neutron stars and pulsars For a sufficiently massive star, an iron core is formed and still the gravitational collapse has enough energy to heat it up to a high enough temperature to either fuse or fission iron. Either in the aftermath of a supernova...A tutorial from the Australia Telescope National Facility, Parkes, New South Wales
http://www.jb.man.ac.uk/~pulsar/Education/Tutorial/tut/tut.html