Assassin Picture of the Week

2014 August 6

Bright Supernovae: ASAS-SN Contribution

One of the major goals on ASAS-SN is to produce as complete as possible census of bright, nearby supernovae. In the last few months, using four telescopes in Hawaii and two telescopes in Chile, we have been finding about 10 bright (V<17) supernovae per month. That does not seem like much, compared to more than 1000 SNe found on the sky every year, but it turns out that in the last few months ASAS-SN finds more than half of all the bright SNe on the sky.

This is illustrated in the plot above, which is automatically updated using data from the Bright Supernova, a most useful website run by David Bishop. We plot the locations of all SNe that are currently V<17 and that have been typed spectroscopically and are less than two months old. SNe discovered by ASAS-SN are marked using blue stars. When we write these words (Wed Aug 6 14:41:30 EDT 2014), there are 15 blue stars and 10 grey stars plotted, so ASAS-SN alone discoveres more than 50 percent of all bright SNe on the sky! This could of course be just a temporary fluke, which is why this plot updates automatically, so check it out again in the future.

Back to ASAS-SN page.

See previous APOWs:

Our Big Boom: ASASSN-14cl

First Light on the Small Magellanic Cloud from Chile

Congratulations to Tom and Jacob!

ASASSN-13dn: Spectra from a New Instrument

ASASSN-14ae, A Very Luminous Transient

Our Latest Paper, in Video Form

Host Galaxies of ASAS-SN Supernovae

Back in Real-Time Discovery Business!

We Have a Logo!

Active (Some Less, Some More) Galactic Nuclei with ASAS-SN

Brutus is EXPANDING!

Swift Ultraviolet and Optical Follow-Up of ASASSN-13dl, Our Latest Supernova

Dramatic AGN Outburst in NGC 2617

M81 and Friends

Two ASAS-SN Views of Orion Nebula

AAVSO Observations of Cataclysmic Variable ASASSN-13ck

Two ASAS-SN Supernovae in One Day!

It is Good to be Lucky!

Extreme M-dwarf Flare Observed by ASAS-SN;

Neptune Discovered!

Multiband photometric follow-up of ASASSN-13aw (SN 2013dr);

"Assassin" Unit 1: Brutus;

How ASAS-SN Discovers Supernovae: Case of Supernova ASASSN-13bb;

NGC 2617: Dramatic Seyfert Type Change;

ASASSN-13/SN 2013da: Our First Supernova Three Weeks Later;

M31 and Companions;

This homepage is maintained by Tom Holoien, Ben Shappee and Kris Stanek. Updated Wed Jul 2 13:34:18 EDT 2014

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