Tag Archive for 'Supernova'

This is the core of a Type II supernova at the onset of explosion: neutrinos that are emitted from the protoneutron at the center are absorbed by the gas behind the shock front, heat up this gas, and drive turbulence; eventually an asymmetric explosion develops. Image credit: Christian Ott, California Institute of Technology / Steve Drasco, Cal Poly San Luis Obsipo.

Type II Supernovae Explode in Lopsided Fashion, Astronomers Say

May 8, 2015 by News Staff

New observations of the remnant of Supernova (SN) 1987A from NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) are confirming predictions made at...

Images of SN 2012ap and its host galaxy, NGC 1729. Image credit: D. Milisavljevic et al.

SN 2012ap: Astronomers Find ‘Missing Link’ in Supernova Family Tree

Apr 28, 2015 by News Staff

Supernova SN 2012ap is a ‘missing link’ between stellar explosions that generate gamma-ray bursts and those that don’t, says a group of astronomers...

This image shows the peculiar galaxy ESO 162-17. Image credit: ESA / Hubble / NASA.

Hubble Zooms in on Peculiar Galaxy ESO 162-17

Apr 20, 2015 by News Staff

Using the Advanced Camera for Surveys on the NASA/ESA Hubble Space Telescope, astronomers have taken a stunning image of the galaxy ESO 162-17. This image...

Astronomers have reported near-infrared interferometric measurements of the angular size of Nova Delphini 2013, starting one day after the explosion and continuing with extensive time coverage during the first 43 days. The image shows Tycho's supernova remnant. Image credit: X-ray - NASA / CXC / SAO; infrared - NASA / JPL-Caltech; optical - MPIA / Calar Alto / O.Krause et al.

Type Ia Supernovae More Diverse than Thought

Apr 13, 2015 by News Staff

Type Ia supernovae, which are bright beacons used as distance markers both for studying the expansion rate of the Universe, and for measuring cosmological...

This is a Hubble Space Telescope photo of NGC 3021. Image credit: NASA / ESA / A. Riess, STScI.

Gorgeous New Image from Hubble Space Telescope Shows Spiral Galaxy NGC 3021

Mar 30, 2015 by News Staff

Astronomers using the Advanced Camera for Surveys (ACS) on the NASA/ESA Hubble Space Telescope have captured a stunning new image of the spiral galaxy...

This image shows the Sculptor dwarf galaxy. Image credit: ESO / Digitized Sky Survey 2.

Astronomers Discover Two Extremely Old Stars in Sculptor Dwarf Galaxy

Mar 25, 2015 by News Staff

A group of astronomers led by Dr Joshua Simon from the Observatories of the Carnegie Institution of Washington has discovered two stars in the Sculptor...

This is a composite, false-color image of the supernova remnant Sagittarius A East. Image credit: R. M. Lau et al.

Supernova Dust Factory Found at Milky Way’s Galactic Center

Mar 20, 2015 by News Staff

Astronomers using NASA’s Stratospheric Observatory for Infrared Astronomy (SOFIA), the world’s largest airborne astronomical observatory, have...

An artist impression of the mass-transfer phase followed by a double-detonation supernova that leads to the ejection of US 708. While this illustration shows the supernova, bottom center, and the ejected star, left, at the same time, in reality the supernova would have been faded away long before the star reached that position. Image credit: ESA / Hubble / NASA / S. Geier.

US 708: Hypervelocity Star Ejected by Supernova Breaks Galactic Speed Record

Mar 6, 2015 by News Staff

A multinational team of astronomers led by Dr Stephan Geier from the European Southern Observatory in Garching, Germany, has determined that a hypervelocity...

This image shows four different images of SN Refsdal whose light has been distorted and magnified by the massive galaxy cluster MACS J1149+2223 in front of it. The huge mass of the cluster and one of the galaxies within it is bending the light from a supernova behind them and creating four separate images of the supernova. The light has been magnified and distorted due to gravitational lensing and as a result the images are arranged around the elliptical galaxy in a formation known as an Einstein cross. Image credit: NASA / ESA / S. Rodney, JHU / FrontierSN team / T. Treu, UCLA / P. Kelly, UC Berkeley / GLASS team / J. Lotz, STScI / Frontier Fields team / M. Postman, STScI / CLASH team / Z. Levay, STScI.

SN Refsdal: Hubble Spots Four Magnified Images of Same Supernova

Mar 6, 2015 by News Staff

Due to the gravitational lensing technique, a team of astronomers led by Dr Patrick Kelly from the University of California, Berkeley, has observed four...

This image shows the barred spiral galaxy NGC 4424. To the left there are two bright objects in the frame: the brightest is another, smaller galaxy known as LEDA 213994, and the object closer to NGC 4424 is an anonymous star in our Milky Way Galaxy. Image credit: ESA / Hubble / NASA / Gilles Chapdelaine.

Hubble Presents Amazing New Image: NGC 4424

Feb 23, 2015 by News Staff

This new image from the Wide Field and Planetary Camera 2 on NASA’s Hubble Space Telescope showcases NGC 4424, a 12th magnitude barred spiral galaxy...

Artist’s impression of the planetary nebula Henize 2-428; the size of the central stars has been exaggerated to better illustrate their appearance. Image credit: Gabriel Perez / SMM / IAC.

Astronomers Discover Close Pair of White Dwarfs in Center of Planetary Nebula Henize 2-428

Feb 10, 2015 by News Staff

At the heart of the unusual planetary nebula Henize 2-428, a group of astronomers led by Dr Miguel Santander-Garcia from the Observatorio Astronomico Nacional...

3D reconstruction of SNR Cassiopeia A provides the first detailed look at the distribution of stellar debris following a supernova explosion; the blue-to-red colors correspond to the varying speed of the emitting gas along our line of sight; the background is a Hubble composite image of the remnant. Image credit: Dan Milisavljevic / Robert Fesen / NASA / ESA / Hubble Heritage Team.

Cassiopeia A: Astronomers Create 3D Map of Supernova Remnant’s Interior

Jan 30, 2015 by News Staff

Astronomers Dr Dan Milisavljevic of Harvard-Smithsonian Center for Astrophysics and Dr Robert Fesen of Dartmouth College have generated a three-dimensional...

The center of the galaxy Messier 82 at very long radio wavelengths; the bright points are most likely supernova remnants; the image is about 3,300 light years across. Image credit: E. Varenius / Onsala Space Observatory / LOFAR Collaboration.

LOFAR Radio Telescope Observes Messier 82 (Cigar Galaxy)

Jan 29, 2015 by News Staff

The Low Frequency Array (LOFAR) radio telescope has been used to observe the glowing center of the starburst galaxy Messier 82 at very long radio wavelengths. The...

Interstellar Plutonium-244 in Ocean Floor Dust Could Alter Current Understanding of Supernovae

Jan 21, 2015 by News Staff

Researchers plumbing the depths of the ocean have made a finding that could change the way we understand massive stellar explosions called supernovae. The...

The dwarf galaxy Markarian 177 (center) and SDSS1133 (blue) lie 90 million light-years away. Image credit: Sloan Digital Sky Survey.

Astronomers Discover Mysterious Source of Light in Dwarf Galaxy Markarian 177

Nov 21, 2014 by News Staff

A multinational group of astronomers led by Dr Michael Koss of ETH Zurich has discovered an exotic object in a galaxy some 90 million light-years away. The...

Different views of the remnant of SN 1987A. Upper left panel: SNR1987A as seen by Hubble in 2010. Upper right panel: SNR1987A as seen by the Australia Telescope Compact Array and the Atacama Large Millimeter/submillimeter Array. Bottom panel: a computer generated visualisation of the remnant showing the possible location of a pulsar. Image credit: ATCA / ALMA / G. Zanardo et al / NASA / ESA / K. France, University of Colorado, Boulder / P. Challis and R. Kirshner, Harvard-Smithsonian Center for Astrophysics.

Scientists Examine Remnant of Supernova SN 1987A

Nov 11, 2014 by News Staff

A team of astronomers using the Atacama Large Millimetre/submillimeter Array (ALMA) in Chile and the Australia Telescope Compact Array (ATCA) in New South...

This is an artist's impression of SN 1993J. Image credit: NASA / ESA / G. Bacon, STScI.

Hubble Helps Astronomers Solve Mystery of Supernova SN 1993J

Sep 11, 2014 by News Staff

Astronomers using the Cosmic Origins Spectrograph and Wide-Field Camera 3 aboard NASA’s Hubble Space Telescope have finally discovered a companion...

This image shows the spiral galaxy NGC 1309; the X-shaped feature at the top of the image of the galaxy marks the location of the supernova SN 2012Z; the inset panel from 2013 shows the supernova; archival Hubble data from 2005 and 2006 show the progenitor system for the supernova. Image credit: NASA / ESA / C. McCully and S. Jha, Rutgers University / R. Foley, University of Illinois / Z. Levay, STScI / Hubble Heritage Team / A. Riess, JHU / STScI.

Hubble Finds Progenitor to Rare Type Iax Supernova SN 2012Z

Aug 7, 2014 by News Staff

Archival photographs from NASA’s Hubble Space Telescope have been used to uncover the progenitor to the supernova SN 2012Z – the binary star system...

This artist's impression shows dust forming in the environment around a supernova explosion. Image credit: ESO / M. Kornmesser.

Astronomers Zero in on Stardust around Supernova SN 2010jl

Jul 9, 2014 by News Staff

Scientists led by Dr Christa Gall from Aarhus University, Denmark, have discovered that supernovas – the cosmic factories of gas and dust – produce...

This image from the 1.5-m robotic telescope at Palomar Observatory shows SN 2013cu in the galaxy UGC 9379. Image credit: Avishay Gal-Yam et al.

Wolf-Rayet Star Linked to Supernova SN 2013cu

May 22, 2014 by News Staff

A group of astronomers led by Dr Avishay Gal-Yam from Weizmann Institute of Science has identified a mysterious Wolf-Rayet star as the likely progenitor...

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