Confusing, isn't it? A black hole is supposed to be, well, black, no?

[SIZE=7][ATTACH=full]253961[/ATTACH]Milky Way’s Black Hole Just Flared, Growing 75 Times as Bright for a Few Hours[/SIZE]
Even though the black hole at the center of the Milky Way is a monster, it’s still rather quiet. Called Sagittarius A*, it’s about 4.6 million times more massive than our Sun. Usually, it’s a brooding behemoth. But scientists observing Sgr. A* with the Keck Telescope just watched as its brightness bloomed to over 75 times normal for a few hours.
The flaring is not visible in optical light. It’s all happening in the near-infrared, the portion of the infrared spectrum closest to optical light. Astronomers have been watching Sgr. A* for 20 years, and though the black hole does have some variability in its output, this 75 times normal flaring event is like nothing astronomers have observed before. This peak was over twice as bright as the previous peak flux level.
These results are being reported in the Astrophysical Journal Letters in a paper titled “Unprecedented variability of Sgr A* in NIR“, and is available at the pre-press site arXiv.org. The lead author is Tuan Do, an astronomer at UCLA.

75 times as bright as what?

wacha maneno. In your hey-day, ulikuwa unapenda ngoma za Ochéstré Marquis?

Shika hii ujikumbushe, gathee:- :smiley:

https://www.youtube.com/watch?v=YPYprhzh45w

He’s getting excited for nothing.
It’s viewable only in advanced infra red technology.
Don’t imagine you will be seated outside your hut at night and see a black hole flare up.

As compared to its kawaida brightness flactuations

Oh, okay …assuming we know its kawaida brightness…communicating science and technology requires a lot of care lest you use too many words saying nothing.

As Giza totoro

Black hole is actually a misnomer

why?

It’s neither black nor is it a hole

@gashwin unaipata vizuri sana! Wengine wanaona waelezee tu for the sake of it.

A black hole. Walituambia nothing can escape from it’s gravitational capture, not even light itself. That’s why it is a black hole. Because no light comes from there. For something to be bright, there basically have to be some light emanating from or reflected by it. How then can a black hole be said to be bright?

A black hole is what colour?

Whatever, but it is a bright colour! :D:D

Ilekitu ilifanya wasema kuna black hole ndio imebrighten as a direct result of something the black hole has done…kapish

There’s smth called Hawking radiation, happens when black holes are evaporating. Where do you get these articles reported by sensational writers who make unscientific claims and don’t bother doing more research. And they write it like it just happened yesterday when the light probably took years to arrive on earth.

Is there a quasar at the centre of the milky way galaxy? Are all black holes accompanied by quasars and vice versa?

the small nut inside my head cannot comprehend et al

Huko kuna sgr,

Since Sagittarious A is 25,000 light years from earth, does it mean the flare happened 25,000 years ago.
I’ve never understood clearly, but these people make it sound like it just happened today.

Listen to yourself Sir. Is a light year an “earth year”?