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(.#484).- Are extraterrestrials hiding behind fast radio bursts?
Are extraterrestrials hiding behind fast radio bursts?
Article by Laurent Sacco
Published on 08/04/2015
Archives
Discovered in the 21st century, rapid radio bursts intrigue astrophysicists who do not yet understand their nature. Specialists recently considered that they were exploding Planck stars. An even more extraordinary hypothesis has just been put forward to explain a strange characteristic of the signals observed: they could be technosignatures of E.T.
An article posted on arXiv by a team of astronomers about Fast Radio Bursts (FRB) has led to some speculation that could easily pass for an April fool. However, this is not the case. Recall that these bursts are in the form of flashes of radio waves that last a few milliseconds. Astronomers first found in the archives observations of several radio telescopes before detecting one live in 2014 using the Parkes Telescope, in Australia.
The brevity of these signals implies (for reasons related to the speed of propagation of a physical effect varying the brightness of an object) that they are emitted from a region whose size is a few hundred kilometers at most. We also know that the high frequency and low frequency parts of an electromagnetic pulse arrive with shifts all the more important as the pulse has traveled far through the universe by crossing regions containing matter. This phenomenon, known in English as dispersion measure (DM), is well known with pulsars. The simplest and most likely conclusion to be drawn from the characteristics of radio bursts based on all of these effects was that they were extragalactic objects that could not be standard stars and that they were capable of emitting a few milliseconds as much energy as the Sun in a day.
Analyzes of the observations made not only with the Parkes radio telescope but also with the telescope in orbit Swift and the Nordic Optical Telescope of La Palma, in the Canaries, and which concerned a FRB seemed to confirm that it was indeed an event extragalactic. According to these analyzes, it is even located more than 5.5 billion light years away. It couldn't be a supernova. A fascinating hypothesis was then put forward: that of the Planck stars ending their life in explosion in the form of a white hole.
Astronomer Seth Shostak is well known for his research in the Seti program. He is one of the directors of the Seti Institute, located in Mountain View (California, United States). © Seti.org
Fast radio bursts, military satellites?
Michael Hippke, Wilfried F. Domainko and John G. Learned have, however, turned these conclusions upside down. According to their analyzes of the signals of the 10 known FRBs, the time intervals between the highest and the lowest frequencies of the detected radio pulses are all integers of the same number: 187.5. At first glance, this would imply that the FRBs are regularly spaced over billions of light years, which seems completely improbable. One might think that it is a fortuitous spacing. This is not impossible when considering a sample with a small number of measurements. When there are several tens or even hundreds of measurements for different FRBs, this spacing could very well disappear. However, if we estimate the probability of observing such spacing with 10 FRB, it seems that this is less than 5 in 10,000.
The three astronomers therefore believe that we are in fact in the presence of radio sources in the Milky Way which, for an unknown reason, emit packets of high and low frequencies spaced in time by multiples of a fixed interval. These could be signals of human origin, for example military satellites. Obviously, the three researchers went a step further. The signals could also be of extraterrestrial origin.
The seriousness of the hypothesis made that the famous Seth Shostak, the director of the Center for Seti Research stepped up to the plate and made a statement on the site of the Seti Institute.
During the 1970s, enlightened members of the British Interplanetary Society (BIS) studied the concept of a spacecraft capable of reaching 12% of the speed of light. The Daedalus project was based on the use of thermonuclear explosions at regular intervals to achieve this performance. Are rapid radio bursts the signature of E.T. interstellar vessels using this propulsion? For the moment, this is pure speculation. © Adrian Mann, Bisbos.com
Pulsars and quasars mistaken for E.T.
The exobiologist recognizes that the observations are particularly intriguing and have no explanation for the moment in the context of known and understood natural phenomena. However, he urged caution, recalling that in 1967, when the first pulsar was discovered, its regular pulsations had also been interpreted as the technosignature of an advanced E.T. civilization. Moreover, the radio source detected was then baptized LGM for Little Green Men, "little green men", in English. In 1965, Russian astronomers also believed to have detected an E.T. civilization. The intensity of the CTA 102 radio source varied too quickly for the models of astrophysics at the time. We now know that it was an effect of quasar physics.
We must therefore keep a cool head before concluding that radio telescopes have detected the opening of wormholes traversable by ETs in the Milky Way or thermonuclear explosions associated with spacecraft having a propulsion of the type envisaged for the Daedalus project ...
VIDEO :
Extraterrestrials: 8 Theories About Their Silence | Futura
Extraterrestrials: 8 theories to explain the silence Why don't extraterrestrials show themselves? Several theories can explain the silence of the extraterrestrials. Futura presents them here 8. Go into the secret ...
F I N .
Are extraterrestrials hiding behind fast radio bursts?
Article by Laurent Sacco
Published on 08/04/2015
Archives
Discovered in the 21st century, rapid radio bursts intrigue astrophysicists who do not yet understand their nature. Specialists recently considered that they were exploding Planck stars. An even more extraordinary hypothesis has just been put forward to explain a strange characteristic of the signals observed: they could be technosignatures of E.T.
An article posted on arXiv by a team of astronomers about Fast Radio Bursts (FRB) has led to some speculation that could easily pass for an April fool. However, this is not the case. Recall that these bursts are in the form of flashes of radio waves that last a few milliseconds. Astronomers first found in the archives observations of several radio telescopes before detecting one live in 2014 using the Parkes Telescope, in Australia.
The brevity of these signals implies (for reasons related to the speed of propagation of a physical effect varying the brightness of an object) that they are emitted from a region whose size is a few hundred kilometers at most. We also know that the high frequency and low frequency parts of an electromagnetic pulse arrive with shifts all the more important as the pulse has traveled far through the universe by crossing regions containing matter. This phenomenon, known in English as dispersion measure (DM), is well known with pulsars. The simplest and most likely conclusion to be drawn from the characteristics of radio bursts based on all of these effects was that they were extragalactic objects that could not be standard stars and that they were capable of emitting a few milliseconds as much energy as the Sun in a day.
Analyzes of the observations made not only with the Parkes radio telescope but also with the telescope in orbit Swift and the Nordic Optical Telescope of La Palma, in the Canaries, and which concerned a FRB seemed to confirm that it was indeed an event extragalactic. According to these analyzes, it is even located more than 5.5 billion light years away. It couldn't be a supernova. A fascinating hypothesis was then put forward: that of the Planck stars ending their life in explosion in the form of a white hole.
Astronomer Seth Shostak is well known for his research in the Seti program. He is one of the directors of the Seti Institute, located in Mountain View (California, United States). © Seti.org
Fast radio bursts, military satellites?
Michael Hippke, Wilfried F. Domainko and John G. Learned have, however, turned these conclusions upside down. According to their analyzes of the signals of the 10 known FRBs, the time intervals between the highest and the lowest frequencies of the detected radio pulses are all integers of the same number: 187.5. At first glance, this would imply that the FRBs are regularly spaced over billions of light years, which seems completely improbable. One might think that it is a fortuitous spacing. This is not impossible when considering a sample with a small number of measurements. When there are several tens or even hundreds of measurements for different FRBs, this spacing could very well disappear. However, if we estimate the probability of observing such spacing with 10 FRB, it seems that this is less than 5 in 10,000.
The three astronomers therefore believe that we are in fact in the presence of radio sources in the Milky Way which, for an unknown reason, emit packets of high and low frequencies spaced in time by multiples of a fixed interval. These could be signals of human origin, for example military satellites. Obviously, the three researchers went a step further. The signals could also be of extraterrestrial origin.
The seriousness of the hypothesis made that the famous Seth Shostak, the director of the Center for Seti Research stepped up to the plate and made a statement on the site of the Seti Institute.
During the 1970s, enlightened members of the British Interplanetary Society (BIS) studied the concept of a spacecraft capable of reaching 12% of the speed of light. The Daedalus project was based on the use of thermonuclear explosions at regular intervals to achieve this performance. Are rapid radio bursts the signature of E.T. interstellar vessels using this propulsion? For the moment, this is pure speculation. © Adrian Mann, Bisbos.com
Pulsars and quasars mistaken for E.T.
The exobiologist recognizes that the observations are particularly intriguing and have no explanation for the moment in the context of known and understood natural phenomena. However, he urged caution, recalling that in 1967, when the first pulsar was discovered, its regular pulsations had also been interpreted as the technosignature of an advanced E.T. civilization. Moreover, the radio source detected was then baptized LGM for Little Green Men, "little green men", in English. In 1965, Russian astronomers also believed to have detected an E.T. civilization. The intensity of the CTA 102 radio source varied too quickly for the models of astrophysics at the time. We now know that it was an effect of quasar physics.
We must therefore keep a cool head before concluding that radio telescopes have detected the opening of wormholes traversable by ETs in the Milky Way or thermonuclear explosions associated with spacecraft having a propulsion of the type envisaged for the Daedalus project ...
VIDEO :
Extraterrestrials: 8 Theories About Their Silence | Futura
Extraterrestrials: 8 theories to explain the silence Why don't extraterrestrials show themselves? Several theories can explain the silence of the extraterrestrials. Futura presents them here 8. Go into the secret ...
F I N .
