Featured Research

from universities, journals, and other organizations

Astronomers Discover Probable Pulsar In Supernova

Date:
October 26, 2001
Source:
Rutgers, The State University Of New Jersey
Summary:
A team of astronomers led by Rutgers Professor John P. Hughes has made an important new discovery using NASA's orbital Chandra X-ray Observatory.

NEW BRUNSWICK/PISCATAWAY, N.J. – A team of astronomers led by Rutgers Professor John P. Hughes has made an important new discovery using NASA's orbital Chandra X-ray Observatory.

The astronomers have found what appears to be a pulsar at the center of the exploded remains of a 1,600-year-old supernova. Pulsars, first discovered in 1967, are known to be rapidly rotating neutron stars, formed in supernova explosions. They emit regular bursts or pulses of radio waves, X-rays and optical light.

"For the first time, we have an oxygen-rich supernova remnant close enough for detailed study, with almost incontrovertible evidence for the existence of an associated pulsar," said Hughes.

"Based on the pattern of elements now revealed by Chandra throughout this remnant, we will be able to ascertain the mass and composition of the star that gave rise to what we now see. This will allow us to make a much closer connection between pulsars and the massive stars from which they formed."

Supernovae are of great interest to astronomers because they are one of the primary sources of the heavy elements necessary to form planets and people. Supernovae are rare, occurring only once every 50 years or so in a galaxy like our own.

Located in the Southern Hemisphere in the constellation Centaurus, the supernova remnant (labeled G292.0+1.8) studied by Hughes and his group shows a rapidly expanding shell of gas 36 light-years across surrounding the apparent pulsar.

It is one of three known oxygen-rich supernovae in our galaxy and is among the 10 brightest supernova remnants known.

A full account of the discovery can be found in "A Pulsar Wind Nebula in the Oxygen-Rich Supernova Remnant G292.0+1.8," published in the Oct. 1 issue of Astrophysical Journal Letters.

The research team also included Patrick Slane (Smithsonian Astrophysical Observatory), David Burrows, Gordon Garmire and John Nousek (Pennsylvania State University), and Charles Olbert and Jonathan Keohane (North Carolina School of Science and Mathematics).

The Chandra X-ray Observatory is NASA's newest space telescope and is the world's most powerful X-ray telescope. Chandra has eight times greater resolution and can detect sources more than 20 times fainter than any previous X-ray telescope. Chandra was launched by the Space Shuttle Columbia on July 23, 1999 with an orbit 200 times higher than the Hubble Space Telescope. It detects images from X-ray sources that are billions of light-years away.


Story Source:

The above story is based on materials provided by Rutgers, The State University Of New Jersey. Note: Materials may be edited for content and length.


Cite This Page:

Rutgers, The State University Of New Jersey. "Astronomers Discover Probable Pulsar In Supernova." ScienceDaily. ScienceDaily, 26 October 2001. <www.sciencedaily.com/releases/2001/10/011023071716.htm>.
Rutgers, The State University Of New Jersey. (2001, October 26). Astronomers Discover Probable Pulsar In Supernova. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2001/10/011023071716.htm
Rutgers, The State University Of New Jersey. "Astronomers Discover Probable Pulsar In Supernova." ScienceDaily. www.sciencedaily.com/releases/2001/10/011023071716.htm (accessed July 24, 2014).

Share This




More Space & Time News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: ISS Cargo Ship Launches in Kazakhstan

Raw: ISS Cargo Ship Launches in Kazakhstan

AP (July 23, 2014) The Progress 56 cargo ship launched from the Baikonur Cosmodrome in Kazakhstan Wednesday. NASA says it will deliver cargo and crew supplies to the International Space Station. (July 23) Video provided by AP
Powered by NewsLook.com
Raw: Cargo Craft Undocks from Space Station

Raw: Cargo Craft Undocks from Space Station

AP (July 22, 2014) A Russian Soyuz cargo-carrying spacecraft undocked from the International Space Station on Monday. The craft is due to undergo about ten days of engineering tests before it burns up in the Earth's atmosphere. (July 22) Video provided by AP
Powered by NewsLook.com
NASA Ceremony Honors Moon Walker Neil Armstrong

NASA Ceremony Honors Moon Walker Neil Armstrong

AP (July 21, 2014) NASA honored one of its most famous astronauts Monday by renaming a historic building at the Kennedy Space Center in Florida. It now bears the name of Neil Armstrong, the first man to walk on the moon. (July 21) Video provided by AP
Powered by NewsLook.com
Neil Armstrong's Post-Apollo 11 Life

Neil Armstrong's Post-Apollo 11 Life

Newsy (July 19, 2014) Neil Armstrong gained international fame after becoming the first man to walk on the moon in 1969. But what was his life like after the historic trip? Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins