Skip to main content

So... did a jellyfish swallow a ball of steel wool?

Tycho's star

This is probably what Eta Carinae looks like end-on. It’s the supernova remnant from Tycho’s Star, seen going bang in 1572 by the gent it’s named after, Tycho Brahe.

And, of course, it’s not obeying the laws of physics — our’s, not the Universe’s.

The blue filmy-looking bits are a (relatively) cold shockfront that should be about two light-years in front of the wooly-looking bits, the debris. The fact that the debris has chosen to bunch up like it has instead of spreading out randomly, almost smoothly, is also cause for conventional concern.

If you view this as an end-on picture of an Eta-Carinae-like situation, rather than as a supernova per se, then the “dumbbell” formation (with a ring around its “waist”) is relatively common, and represents an unusually energetic plasma pinch.

Another interesting image to consider is this starspot:

HD12545 and its 'spot'

Note the copy of our Sun imprinted top left for scale. Quite a sunspot, no? And utterly impossible to conventional stellar physics.

If you view a star as a honking great anode, sunspots are simply regions where “anode tufting” has collapsed for lack of curent flow. In an eyeblink, sunspots suddenly make sense. This star simply isn’t getting hit with enough current to drive the formation of “anode tufts” across its entire surface.

Now I’m just wondering whether telling you about the QASARs so soon is a good idea. (-:

Comments

Popular posts from this blog

new life for an old (FTX) PSU, improved life for one human

the LEDs on this 5m strip happen to emit light centred on a red that does unexpectedly helpful things to (and surprisingly deeply within) a human routinely exposed to it. it has been soldered to a Molex connector, plugged into a TFX power supply from a (retired: the MoBo is cactus) Small Form Factor PC, the assorted PSU connectors (and loose end from the strip) have been taped over. the LED strip cost $10.24 including postage, the rest cost $0, the PSU is running at 12½% of capacity, consumes less power than a laptop plug-pack despite running a fan. trial runs begin today.

every-application-is-part-of-a-toolkit at work

I have a LibreOffice Impress slideshow that I wish to turn into a narrated video. 1. export the slideshow as PNG images (if that is partially broken — as at now — at higher resolutions, Export Directly as PDF then use ‘pdftoppm’ (from the poppler-utils package) to do the same). 2. write a small C program (63 lines including comments) to display those images one at a time, writing a config file entry for Imagination (default transition: ‘cross fade’) based on when the image-viewer application (‘display,’ from the GraphicsMagick suite) is closed on each one; run that, read each image aloud, then close each image in turn. 3. run ‘Imagination’ over the config file to produce a silent MP4 video with the correct timings. 4. run ‘Audacity’ to record speech while using ‘SMPlayer’ to display the silent video, then export that recording as a WAV file. 4a. optionally, use ‘TiMIDIty’ to convert a non-copyright-encumbered MIDI tune to WAV, then import that and blend it with the speech (as a quiet b...

boundaries

pushing the actual boundaries of the physical (not extremes, the boundaries themselves) can often remove barriers not otherwise perceived. one can then often resolve an issue itself, rather than merely stonewalling at the physical consequences of the issue.