Sep 2 2017
03:08 am
By: R. Neal  shortURL

Green Bank Telescope, Subjects: Radio, Transient, Fast Radio Burst: "These are the highest frequency and widest bandwidth detections of bursts from FRB 121102 obtained to-date. Additional fully calibrated full-Stokes analysis employing coherent dedispersion on raw voltage data is ongoing."

Westerbork Synthesis Radio Telescope: "Following the detection of multiple bright pulses from FRB 121102 at higher frequencies with the Green Bank Telescope (ATel #10675) on 26 August, this detection indicates the FRB source may be in a phase of outburst."

Storm of Strange Radio Bursts Emerges From Deep Space

Pinpointing FRB 121102 source...

The Sound of Fast Radio Burst FRB 121102

Mike Knapp's picture

N = R∗ × fp × ne × fl × fi × fc × L

• N is the number of currently active, communicative civilizations in our galaxy.
• R∗ is the rate at which stars form in our galaxy.
• fp is the fraction of stars with planets.
• ne is the number of planets that can potentially host life, per star that has planets.
• fl is the fraction of the above that actually do develop life of any kind.
• fi is the fraction of the above that develop intelligent life.
• fc is the fraction of the above that develop the capacity for interstellar communication.

cafkia's picture

"ne" needs to be qualified.

"ne" needs to be qualified. We have found life on this planet in some seriously improbable places, very hot and very cold. That experience suggests that most any planet could potentially host life unless we restrict the temperature and gaseous mixture range to that in which humans and human sustenance survives.

"fp" is nearly infinite. I am unaware of any stars that "we" can definitively say does NOT have planets.

"fi" really tempts one to sarcasm.

"fc" is a seriously limiting factor. Unless the interstellar communication includes a FTL element, there could be a billion civilizations in this galaxy alone that are as yet, outside the range of our sensors because the civilizations are a thousand years old or less.

Knoxoasis's picture

I for one welcome our new

I for one welcome our new alien overlords.

Herb's picture

you will be delicious

The first thing they will do is give us a book. To Serve Humanity. Problem is, it is a cookbook.

H/T The Outer Limits

tlc's picture

That Was The Twilight Zone

The Outer Limits was a pale imitation and sucked terribly.

R. Neal's picture

The cosmic question is, do

The cosmic question is, do the bursts contain information?

Paging Dr. Arroway...

Mike Knapp's picture

Drake eqn

Posted for gits n shiggles. Another piece is whether there need to be more factors, whether some should be combined. "Intelligent life", really. Maybe dolphins would've also caused such havoc if they had opposable fins...
When we get the cosmic transistor burst this Onion article comes to mind...

Distant Planet Terrified It Might Be Able To Someday Support Human Life

The silicate-based planet also expressed a similarly crippling worry that any of its six moons could one day develop atmospheric pressure and gravity levels suitable for the human body, underscoring that it does not want humans “within 100 parsecs” of its orbit.

“Boy, I can only imagine what that awful species would do to me if they found out I have an abundance of rich mineral deposits deep within me,” said WR 67c, noting that the prospect of human scientists discovering its existence has already led to debilitating bouts of stress and anxiety. “Those horrible organisms have already developed the technology for short-distance space travel, and it’s probably only a matter of time before they figure out how to voyage through interstellar space.”

“It’s almost like I can already feel them crawling all over my surface, infesting every inch of my crust,” the planet added, shuddering. “Ugh, it’s best not to even think about it.”

Despite its opposition to human life, WR 67c admitted no such reservations toward harboring other carbon-based lifeforms, noting that most are harmless and actually tend to form a peaceful and pleasant symbiosis with their surroundings.

PS - one of my students wore a T-shirt with the Drake equation the other day. Gotta get one

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