astronomy

SN 2006gy

SN 2006gy is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand SN 2006gy rather than just read about it. In short: SN 2006gy was an extremely energetic supernova, also referred to as a hypernova, that was discovered on September 18, 2006. It was first observed by Robert Quimby and P.

Key takeaways

SN 2006gy belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SN 2006gy to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SN 2006gy from memory before moving on to harder problems.

Reference excerpt

SN 2006gy was an extremely energetic supernova, also referred to as a hypernova, that was discovered on September 18, 2006. It was first observed by Robert Quimby and P. Mondol, and then studied by several teams of astronomers using facilities that included the Chandra, Lick, and Keck Observatories. In May 2007, NASA and several of the astronomers announced the first detailed analyses of the supernova, describing it as the "brightest stellar explosion ever recorded". In October 2007, Quimby announced that SN 2005ap had broken SN 2006gy's record as the brightest-ever recorded supernova, and several subsequent discoveries are brighter still. Time magazine listed the discovery of SN 2006gy as third in its Top 10 Scientific Discoveries for 2007.

Characteristics

SN 2006gy occurred in the galaxy NGC 1260, approximately 238 million light-years (73 megaparsecs) away. The energy radiated by the explosion has been estimated at 1051 ergs (1044 J), making it a hundred times more powerful than the typical supernova explosion which radiates 1049 ergs (1042 J) of energy. Although at its peak the SN 2006gy supernova was intrinsically 400 times as luminous as SN 1987A, which was bright enough to be seen by the naked eye, SN 2006gy was more than 1,400 times as far away as SN 1987A, and thus too far away to be seen without a telescope. SN 2006gy is classified as a Type II supernova because it showed lines of hydrogen in its spectrum, although the extreme brightness indicates that it is different from the typical Type II supernova. Several possible mechanisms have been proposed for such a violent explosion. One promising explanation involves the efficient conversion of explosive kinetic energy to radiation by interaction with a massive circumstellar shell, similar to a Type IIn supernova but on a larger scale. Such a scenario might occur following mass loss of 10 or more M☉ in a luminous blue variable eruption, through pulsational pair instability ejections, or a common envelope event . Denis Leahy and Rachid Ouyed, Canadian scientists from the University of Calgary, have proposed that SN 2006gy was a quark-nova, heralding the birth of a quark star.

Similarity to Eta Carinae Eta Carinae (η Carinae or η Car) is a highly luminous hypergiant star located approximately 7,500 light-years from Earth in the Milky Way galaxy. Since Eta Carinae is 32,000 times closer than SN 2006gy, the light from it will be about a billion-fold brighter. It is estimated to be similar in size to the star which became SN 2006gy. Dave Pooley, one of the discoverers of SN 2006gy, says that if Eta Carinae exploded in a similar fashion, it would be bright enough that one could read by its light on Earth at night, and would even be visible during the daytime. SN 2006gy's apparent magnitude (m) was 15, so a similar event at Eta Carinae will have an m of about −7.5. According to astrophysicist Mario Livio, this could happen at any time, but the risk to life on Earth would be low.

References

SIMBAD data

External links

Astronomy Picture of the Day 10 May 2007 Giant exploding star outshines previous supernovas (CNN.com) Space.com article on SN 2006gy. Star dies in brightest supernova, BBC, Tuesday, 8 May 2007, 03:35 GMT The Greatest Show in Space, Time magazine Thursday, May 21st, 2007 Pages 56–57 Archived 2013-08-24 at the Wayback Machine Supernova may offer new view of early universe Lick Observatory Laser Guide Star Adaptive Optics Image SN 2006gy

Illustrations

Worked examples

Example 1 — a first encounter with SN 2006gy

Start with the simplest possible case. Write down what SN 2006gy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to SN 2006gy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about SN 2006gy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of SN 2006gy

In research: SN 2006gy appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses SN 2006gy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: SN 2006gy is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 2006, Hypernovae, Perseus (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for SN 2006gy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “SN 2006gy” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study SN 2006gy in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SN 2006gy means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain SN 2006gy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SN 2006gy in simple terms?

SN 2006gy was an extremely energetic supernova, also referred to as a hypernova, that was discovered on September 18, 2006. It was first observed by Robert Quimby and P.

Why does SN 2006gy matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study SN 2006gy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on SN 2006gy.