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Articles

  1. How to report new variable star discoveries
  2. Pulsar Seen Speeding Away From the Supernova That Created it - Universe Today
  3. and How to Observe Them

Supernova Physics. Pages Supernovae to Measure the Universe. Supernovae in Our Neighborhood. The Top Extragalactic Supernovae. Supernovae: A Threat to Life on Earth. Supernovae as Visual Variable Stars. Supernova Photometry and Light Curves.

Supernova Spectroscopy. The most famous supernova is probably SN historic supernovae are named for the year they were observed which created the Crab Nebula. Now, thanks to all of our telescopes and observatories, observing supernovae is fairly routine. But one thing astronomers have never observed is the very early stages of a supernova. In this case, according to a paper published at Nature Physics, follow-up observations revealed a surprise: SN fs was surrounded by circumstellar material CSM that it ejected in the year prior to the supernova event.

According to the paper, this kind of instability might be common among supernovae. SN fs was a red super-giant. But follow up observations with other telescopes showed the supernova explosion moving through a cloud of material previously ejected by a star. Catching the 3-hour-old SN fs was an extremely lucky event. The IPTF is a fully-automated wide-field survey of the sky.

It takes 60 second exposures at frequencies from 5 days apart to 90 seconds apart. This is what allowed it to capture SN fs in its early stages. Our understanding of supernovae is a mixture of theory and observed data. We know a lot about how they collapse, why they collapse, and what types of supernovae there are. But this is our first data point of a SN in its early hours. SN fs is million light years away in a spiral-arm galaxy called NGC Type II supernovae are mostly observed in the spiral arms of galaxies. Russell, B. Swift X-ray upper limits on type Ia supernova environments.

Horesh, A.

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How to report new variable star discoveries

Margutti, R. Patat, F. Detection of circumstellar material in a normal type Ia supernova. Ferretti, R. Time-varying sodium absorption in the Type Ia supernova gh. Sternberg, A. Circumstellar material in type Ia supernovae via sodium absorption features.

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Maguire, K. A statistical analysis of circumstellar material in Type Ia supernovae. On the source of the dust extinction in type Ia supernovae and the discovery of anomalously strong Na I absorption. Mazzali, P. High-velocity features: A ubiquitous property of type Ia supernovae. Zhao, X. The silicon and calcium high-velocity features in type Ia supernovae from early to maximum phases. Blondin, S. One-dimensional delayed-detonation models of Type Ia supernovae: confrontation to observations at bolometric maximum.

Pulsar Seen Speeding Away From the Supernova That Created it - Universe Today

An asymptotic-giant-branch star in the progenitor system of a type Ia supernova. Dilday, B. PTF 11kx: A type Ia supernova with a symbiotic nova progenitor. Type Ia supernovae strongly interacting with their circumstellar medium. Mattila, S. Leonard, D. Constraining the type Ia supernova progenitor: The search for hydrogen in nebular spectra.

SuperNova Telescope

Lundqvist, P. Hydrogen and helium in the spectra of Type Ia supernovae. No stripped hydrogen in the nebular spectra of nearby type Ia supernova fe. No trace of a single-degenerate companion in late spectra of supernovae fe and Type Ia supernovae. Strong evidence against a non-degenerate companion in SN cg. Sand, D. Tucker, M. Kollmeier, J. Vallely, P. Parrent, J.

and How to Observe Them

A study of carbon features in type Ia supernova spectra. Thomas, R.


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Type Ia supernova carbon footprints. The spectroscopic diversity of type Ia supernovae. Folatelli, G. Unburned material in the ejecta of type Ia supernovae. Carbon detection in early-time optical spectra of Type Ia supernovae. Exploring the spectral diversity of low-redshift Type Ia supernovae using the Palomar Transient Factory. Heringer, E. Spectral sequences of type Ia supernovae. Carbon as a diagnostic tool for explosion mechanisms.


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  6. The oxygen features in type Ia supernovae and implications for the nature of thermonuclear explosions. Ashall, C. Photometric and spectroscopic observations, and abundance tomography modelling of the Type Ia supernova SN J located in M Ma, H. Carbon deflagration in type Ia supernova. Centrally ignited models. Brown, P. Theoretical clues to the ultraviolet diversity of type Ia supernovae.