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PostPosted: Thu Nov 09, 2017 7:35 am 
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Bizarre Supernova Defies Understanding

https://www.scientificamerican.com/arti ... rstanding/

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Supernovas are thought to be the explosive deaths of stars. So what happens when one is found repeating?


IPTF14hls

https://ferrebeekeeper.wordpress.com/20 ... iptf14hls/

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PostPosted: Thu Nov 09, 2017 10:48 am 
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Sky & Telescope online has a more thorough article about this object...

http://www.skyandtelescope.com/astronomy-news/not-dead-yet-star-wouldnt-die/

Also note that the name of the object is iPTF14hls, with a lowercase (not uppercase) "i" at the beginning. It's based on the abbreviation for the survey, the "intermediate Palomar Transient Factory" ...

https://www.ptf.caltech.edu/page/about

I wonder if the lowercase "i" is used for the same reason some are complaining about the formal name of our recent interstellar visitor, 1I/2017 U1 (╩╗Oumuamua)? An uppercase "i" can look a lot like the numeral "1" or a lowercase "L" depending on the typeface. In any case, the last paragraph at the link indicates the survey will transition to the "ZTF" this year, the Zwicky Transient Factory. Got to be careful with the letter Z though, sometimes it can get mixed-up with the number 2. <g>

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PostPosted: Sat Nov 11, 2017 8:12 am 
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Light from Supernova Bouncing Off Giant Dust Cloud

http://www.astrowatch.net/2017/11/light ... giant.html

SN 2014J is the event in question, not iPTF14hls. It's a "light echo".

Quote:
A light echo occurs because light from the stellar blast travels different distances to arrive at Earth. Some light comes to Earth directly from the supernova blast. Other light is delayed because it travels indirectly. In this case, the light is bouncing off a huge dust cloud that extends 300 to 1,600 light-years around the supernova and is being reflected toward Earth.

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PostPosted: Thu Nov 16, 2017 4:44 pm 
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The ZTF has seen first light...

http://www.skyandtelescope.com/astronomy-news/sky-scanning-telescope-sees-first-light/

Quote:
The Zwicky Transient Facility has taken its first image, covering an area equivalent to 247 full Moons in a single shot. This beginning is part of an ongoing sea change in astronomy.

Notice that it's called a Facility in this S&T article rather than a Factory as in the previously-linked iPTF page.

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