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NASA's Chandra Reveals Origin of Key Cosmic Explosions

Media Telecon:

Feb. 17, 2010 (1:00 p.m. Eastern)

Using Chandra, scientists have obtained the first direct evidence for what triggers a Type Ia supernova, a class of supernova used in cosmology to accurately measure distances.

-Press Release

Live audio of the teleconference streamed online at: If you’re unable to take part, you can call the replay number below to listen to the news conference until February 23:
Dial In: 1.800.386.3421
Toll Call: 1.203.369.3265

A video will air on NASA Television on February 17 (check the NASA TV schedule for additional times and information).


Marat Gilfanov Marat Gilfanov, (Max Planck Institute for Astrophysics in Garching, Germany)
Akos Bogdan Akos Bogdan, (Max Planck Institute for Astrophysics in Garching, Germany)
Mario Livio Mario Livio, (STScI)

Bios Page


SN 1994d

Figure 1. SN 1994d (HST image).


Figure 2a. Illustration of Accretion Scenario.

Figure 2b. Illustration of Merger Scenario.


Figure 3. M31 X-ray/Optical/Infrared Composite image (roll your mouse over the image).


Figure 4. M32, M105, NGC 3377 & NGC 3585 X-ray/Optical/Infrared Composite Images.

Figure 5. Animation of Merger Trigger for Supernova.

Additional Information

Paper Title: An Upper Limit on the Contribution of Accreting White Dwarfs to the Type Ia Supernova Rate

Full Author List: Marat Gilfanov & Akos Bogdan

Scientist Contact Information:
Marat Gilfanov: gilfanov@MPA-Garching.MPG.DE
Akos Bogdan: bogdan@MPA-Garching.MPG.DE
Mario Livio:

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