Magnetars could zap clouds of atomic hydrogen, producing focused microwave beams.
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Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.Damn, I was hoping for aliens![]()
I suppose the point is that it's hard to show that it is a false alarm. After all, this was a measurement from a campaign to find alien transmissions; it found something that looked like an alien transmission. If it cannot be invalidated as an error, then the original hypothesis still stands and should be investigated.Its kinda wierd how the wow signal has stuck around, but all the more recent ones get rightfully understood as interferance or equipment issues. What makes wow still memorable? Just that it was the first false alarm?
Only an advertisement for pornography could conceivably be that powerful...Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.
Xaser and graser are pretty cool terms, but uvaser and iraser and raser less so.Hilarious that we have to describe masers as "lasers but with microwaves" these days. Back in the day, some of the first laser researchers wanted to name their new invention the "optical maser".
Aren't these all weird arbitrary classifications of a single thing, EM radiation?Xaser and graser are pretty cool terms, but uvaser and iraser and raser less so.
...given the tantalizing possibility that it just might be from an alien civilization trying to communicate with us. A team of astronomers think they might have a better explanation,...
These days, if it's at infrared frequencies or above, it's a laser. If it's microwaves or below, it's a maser.Aren't these all weird arbitrary classifications of a single thing, EM radiation?
They should all be called EMASER.
I'd say the lack of any signal to view again is proof it wasn't real. Any logical use of signalling another system would require constant and repeated signaling, not just fanning across the sky hoping someone is listening at that very moment. Since we're talking "aliens", then logic must enter the equation.I suppose the point is that it's hard to show that it is a false alarm. After all, this was a measurement from a campaign to find alien transmissions; it found something that looked like an alien transmission. If it cannot be invalidated as an error, then the original hypothesis still stands and should be investigated.
https://xkcd.com/2759/Xaser and graser are pretty cool terms, but uvaser and iraser and raser less so.
God made the universe, and hence the aliens. Checkmate!If you say “Aliens” either you’re making a joke or you are a joke. Might as well just say “It’s God” - at least some people would take that seriously.
Except that FRBs (fast radio bursts) are real, despite many thinking for decades that they must be some sort of man-made artifact. Some have recently been found to repeat, many (so far as is known) do not. We still don't know what causes them, although there are a number of candidates.I'd say the lack of any signal to view again is proof it wasn't real. Any logical use of signalling another system would require constant and repeated signaling, not just fanning across the sky hoping someone is listening at that very moment. Since we're talking "aliens", then logic must enter the equation.
Extraordinary claims require extraordinary evidence. WoW utterly lacks most any evidence.
Hey, I had an e-machines! It did it's job just fine. Almost as good as my compaq from 1988.These days, if it's at infrared frequencies or above, it's a laser. If it's microwaves or below, it's a maser.
And sorry, but "e-maser" sounds to me like some cheap shovelware desktop maker from the late 90s or early 2000s.![]()
“A magnetar is going to produce [short] radio emissions as well. Do you really need this complicated maser stuff happening as well to explain the Wow! signal?”
Masers have been found in astrophysical contexts in the past; natural masers definitely exist. However, they need power sources to keep the hydrogen excited, which requires large amounts of energy; usually a star or compact object of some sort. A magnetar would cover perhaps two important bits of interest: they generate huge amounts of power in fairly small regions, and their enormous magnetic fields would likely imprint substantial polarization on any signals.I am not an astrophysicist. But my understanding of a hydrogen maser is that it's going to be pretty much monochromatic at the hydrogen 21cm wavelength (with blurring/redshifting/etc by motion). I very much doubt a magnetar will, though I don't know it for a fact. I didn't catch in the article how narrow- or broadband the signals are.
It's not aliens, but it's really really interesting.
"Fanning across the sky" is how we were listening at the time, and it's obviously more effective than hurling a small satelite with a gold record in one direction and hope someone finds it.I'd say the lack of any signal to view again is proof it wasn't real. Any logical use of signalling another system would require constant and repeated signaling, not just fanning across the sky hoping someone is listening at that very moment. Since we're talking "aliens", then logic must enter the equation.
Extraordinary claims require extraordinary evidence. WoW utterly lacks most any evidence.
That's how people communicate. We don't just do it once. We do it as often as we think it's needed to get the message across.
We don’t know how long the signal lasted. 72 s was the duration that any point-origin signal would have been recorded as, due to the effective scanning of the aperture of the detector across the sky. It could have been detected if the signal lasted less than 72 s, but that it was recorded as exactly 72 s implies that it actually had a duration longer than that (but less than 24 hours, as it wasn’t there when that part of the sky passed over the detector again). This is also why the amplitude of the signal appears to rise to a peak then falls. That’s not a characteristic of the signal itself, but of the scanning nature of the detector. For all we know, the signal could have lasted minutes or hours, and been of a constant amplitude.A 72 second message in a universe that's 1.513728e+17 seconds old (give or take a few billion) is insanely SHORT. And it never repeating on any scale we understand can only point to a natural phenomenon, not "communication", or even a shout to the wild to echo across the ages.
Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.
Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.
Well, most other astronomers I 've read from remain sceptical. An excited hydrogen cloud would explain the narrowband but nobody, so far, has seen a cloud behave as a focusing lens. This doesn't mean they actually don't but until we find another one the issue is still open.I'm not saying it's magnetars zapping clouds of atomic hydrogen producing focused microwave beams, but it's magnetars zapping clouds of atomic hydrogen producing focused microwave beams.
They don't need to broadcast that, we're broadcasting enough warnings on our own."Avoid system XJ6¡!1 at all costs! The people on the third planet are NUTS!"
Hi, ASL ?Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.
"Run! You fools!"Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.
"Duck!"Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.
Perhaps aliens use magnetar masers for communication? I wonder what sort of message would be important enough to warrant such a powerful system.