Eric Korpela

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Eric Korpela is a research astronomer at the University of California, Berkeley, [1] He is the director of the SETI@home project, [2] [3] [4] [5] a distributed computing project that was launched in 1999 to use individuals computers to analyze data collected in the Search for Extraterrestrial Intelligence (SETI). [3] Korpela notes that with modern-day mobile devices having greater capacities than personal computers did in 1999, SETI@home has developed an Android app to analyze data gathered by the Breakthrough Listen SETI project. [3]

Contents

Scientific work

Korpela is known for his assessment of putative signals from extraterrestrial intelligence. He was skeptical about the claim that 234 signals detected by the Sloan Digital Sky Survey may be from extraterrestrial intelligence, suggesting instead that this may be due to instrumental effects or the method by which the data was analyzed. [6] When a radio signal was detected from the vicinity of the star HD 164595 that some interpreted as a possible signal from extraterrestrial intelligence, Korpela was skeptical, [7] noting "there's really nothing about this 'signal' that would distinguish it from a natural radio transient." [1] Korpela said he was unimpressed by this signal, [8] observing that SETI@home had detected millions of similar signals in the past. [9] He suggested the signal could not be differentiated from signals generated by space-based human technologies, adding "there's also nothing that could distinguish it from a satellite passing through the telescope field of view." [1] In reviewing criteria for a more credible signal from extraterrestrial intelligence than the signal from HD 164595, Korpela said that a credible signal would be detectable from two telescopes on two continents, with the best candidate signals originating from a single point in space. [4] Signals from extraterrestrial intelligence should also be continuous, he suggested. [4] [10]

Looking to future best practices for announcing possible detection of extraterrestrial intelligence, Korpela argued that putative detections should be confirmed by another telescope before being reported to the public. [4] He also advocated the use of the Rio Scale to give "some realism" to possible detections. [5] If a signal is confirmed to be from extraterrestrial intelligence, he advocates not replying without a decision by the world community. [11] [12]

According to Korpela, among the promising targets for future SETI searches are TRAPPIST-1 and Proxima b. [11]

Korpela suggested that extraterrestrial intelligence may be motivated to contact humans because they may have evolved to be curious. [4]

Most cited papers

Other topics

Related Research Articles

<span class="mw-page-title-main">Fermi paradox</span> Discrepancy between lack of evidence of advanced alien life and apparently high likelihood it exists

The Fermi paradox is the discrepancy between the lack of conclusive evidence of advanced extraterrestrial life and the apparently high likelihood of its existence. As a 2015 article put it, "If life is so easy, someone from somewhere must have come calling by now."

The search for extraterrestrial intelligence (SETI) is a collective term for scientific searches for intelligent extraterrestrial life, for example, monitoring electromagnetic radiation for signs of transmissions from civilizations on other planets.

<span class="mw-page-title-main">Kardashev scale</span> Measure of a civilizations evolution

The Kardashev scale is a method of measuring a civilization's level of technological advancement based on the amount of energy it is capable of harnessing and using. The measure was proposed by Soviet astronomer Nikolai Kardashev (1932–2019) in 1964 and was named after him.

Extraterrestrial intelligence (ETI) refers to hypothetical intelligent extraterrestrial life. No such life has ever been verifiably observed to exist. The question of whether other inhabited worlds might exist has been debated since ancient times. The modern form of the concept emerged when the Copernican Revolution demonstrated that the Earth was a planet revolving around the Sun, and other planets were, conversely, other worlds. The question of whether other inhabited planets or moons exist was a natural consequence of this new understanding. It has become one of the most speculative questions in science and is a central theme of science fiction and popular culture.

<span class="mw-page-title-main">SETI@home</span> BOINC based volunteer computing project searching for signs of extraterrestrial intelligence

SETI@home is a project of the Berkeley SETI Research Center to analyze radio signals with the aim of searching for signs of extraterrestrial intelligence. Until March 2020, it was run as an Internet-based public volunteer computing project that employed the BOINC software platform. It is hosted by the Space Sciences Laboratory at the University of California, Berkeley, and is one of many activities undertaken as part of the worldwide SETI effort.

<span class="mw-page-title-main">Wow! signal</span> 1977 narrowband radio signal from SETI

The Wow! signal was a strong narrowband radio signal detected on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States, then used to support the search for extraterrestrial intelligence. The signal appeared to come from the direction of the constellation Sagittarius and bore expected hallmarks of extraterrestrial origin.

<span class="mw-page-title-main">Communication with extraterrestrial intelligence</span> Branch of SETI

The communication with extraterrestrial intelligence (CETI) is a branch of the search for extraterrestrial intelligence (SETI) that focuses on composing and deciphering interstellar messages that theoretically could be understood by another technological civilization. The best-known CETI experiment of its kind was the 1974 Arecibo message composed by Frank Drake.

<span class="mw-page-title-main">Allen Telescope Array</span> Radio telescope array

The Allen Telescope Array (ATA), formerly known as the One Hectare Telescope (1hT), is a radio telescope array dedicated to astronomical observations and a simultaneous search for extraterrestrial intelligence (SETI). The array is situated at the Hat Creek Radio Observatory in Shasta County, 290 miles (470 km) northeast of San Francisco, California.

<span class="mw-page-title-main">Astropulse</span> BOINC based volunteer computing SETI@home subproject

Astropulse is a volunteer computing project to search for primordial black holes, pulsars, and extraterrestrial intelligence (ETI). Volunteer resources are harnessed through Berkeley Open Infrastructure for Network Computing (BOINC) platform. In 1999, the Space Sciences Laboratory launched SETI@home, which would rely on massively parallel computation on desktop computers scattered around the world. SETI@home utilizes recorded data from the Arecibo radio telescope and searches for narrow-bandwidth radio signals from space, signifying the presence of extraterrestrial technology. It was soon recognized that this same data might be scoured for other signals of value to the astronomy and physics community.

<span class="mw-page-title-main">Avi Loeb</span> Israeli-American theoretical physicist

Abraham "Avi" Loeb is an Israeli-American theoretical physicist who works on astrophysics and cosmology. Loeb is the Frank B. Baird Jr. Professor of Science at Harvard University, where since 2007 he has been Director of the Institute for Theory and Computation at the Center for Astrophysics. He chaired the Department of Astronomy from 2011 to 2020, and founded the Black Hole Initiative in 2016.

Active SETI is the attempt to send messages to intelligent extraterrestrial life. Active SETI messages are predominantly sent in the form of radio signals. Physical messages like that of the Pioneer plaque may also be considered an active SETI message. Active SETI is also known as METI.

<span class="mw-page-title-main">Robert H. Gray</span>

Robert Hansen Gray was an American data analyst, author, and astronomer, and author of The Elusive Wow: Searching for Extraterrestrial Intelligence.

A post-detection policy (PDP), also known as a post-detection protocol, is a set of structured rules, standards, guidelines, or actions that governmental or other organizational entities plan to follow for the "detection, analysis, verification, announcement, and response to" confirmed signals from extraterrestrial civilizations. Though no PDPs have been formally and openly adopted by any governmental entity, there is significant work being done by scientists and nongovernmental organizations to develop cohesive plans of action to utilize in the event of detection. The most popular and well known of these is the "Declaration of Principles Concerning Activities Following the Detection of Extraterrestrial Intelligence", which was developed by the International Academy of Astronautics (IAA), with the support of the International Institute of Space Law. The theories of PDPs constitute a distinct area of research but draw heavily from the fields of SETI, METI, and CETI.

The cultural impact of extraterrestrial contact is the corpus of changes to terrestrial science, technology, religion, politics, and ecosystems resulting from contact with an extraterrestrial civilization. This concept is closely related to the search for extraterrestrial intelligence (SETI), which attempts to locate intelligent life as opposed to analyzing the implications of contact with that life.

<span class="mw-page-title-main">Technosignature</span> Property that provides scientific evidence for the presence of technology

Technosignature or technomarker is any measurable property or effect that provides scientific evidence of past or present technology. Technosignatures are analogous to biosignatures, which signal the presence of life, whether intelligent or not. Some authors prefer to exclude radio transmissions from the definition, but such restrictive usage is not widespread. Jill Tarter has proposed that the search for extraterrestrial intelligence (SETI) be renamed "the search for technosignatures". Various types of technosignatures, such as radiation leakage from megascale astroengineering installations such as Dyson spheres, the light from an extraterrestrial ecumenopolis, or Shkadov thrusters with the power to alter the orbits of stars around the Galactic Center, may be detectable with hypertelescopes. Some examples of technosignatures are described in Paul Davies's 2010 book The Eerie Silence, although the terms "technosignature" and "technomarker" do not appear in the book.

<span class="mw-page-title-main">Breakthrough Listen</span> Initiative to search for intelligent extraterrestrial life

Breakthrough Listen is a project to search for intelligent extraterrestrial communications in the Universe. With $100 million in funding and thousands of hours of dedicated telescope time on state-of-the-art facilities, it is the most comprehensive search for alien communications to date. The project began in January 2016, and is expected to continue for 10 years. It is a component of Yuri Milner's Breakthrough Initiatives program. The science program for Breakthrough Listen is based at Berkeley SETI Research Center, located in the Astronomy Department at the University of California, Berkeley.

HD 164595 b is a confirmed exoplanet orbiting around a Sun-like star HD 164595 every 40 days some 94.36 light-years away. It was detected with the radial velocity technique with the SOPHIE echelle spectrograph. The planet has a minimal mass equivalent of 16 Earths.

<span class="mw-page-title-main">Berkeley SETI Research Center</span>

The Berkeley SETI Research Center (BSRC) conducts experiments searching for optical and electromagnetic transmissions from intelligent extraterrestrial civilizations. The center is based at the University of California, Berkeley.

<span class="mw-page-title-main">BLC1</span> Narrowband radio signal detected in April and May 2019

BLC1 was a candidate SETI radio signal detected and observed during April and May 2019, and first reported on 18 December 2020, spatially coincident with the direction of the Solar System's closest star, Proxima Centauri.

The Rio scale was proposed in 2000 as a means of quantifying the significance of a SETI detection. The scale was designed by Iván Almár and Jill Tarter to help tell policy-makers how likely, from 0 to 10, it is that an extraterrestrial radio signal has been produced by an intelligent civilization.

References

  1. 1 2 3 Ferris, Robert (2016-08-30). "Strong signal from outer space catches scientists' attention". www.cnbc.com. Retrieved 2019-01-20.
  2. Oberhaus, Daniel (2016-07-08). "If We Want to Find Aliens, We Need to Save the Arecibo Telescope". Vice. Retrieved 2019-01-20.
  3. 1 2 3 "Listening to starlight: Our ongoing search for alien intelligence". Engadget. 25 May 2017. Retrieved 2019-01-20.
  4. 1 2 3 4 5 Lüdemann, Dagny (2016-09-02). "Außerirdische: "Wenn, dann zerstören uns Aliens aus Versehen"". Die Zeit (in German). ISSN   0044-2070 . Retrieved 2019-01-20.
  5. 1 2 Leu, Chelsea (2016-10-14). "Astronomers use this handy scale to figure out if aliens are talking to us". Wired. ISSN   1059-1028 . Retrieved 2019-01-20.
  6. "Des astronomes auraient détecté 234 signaux extraterrestres". Fredzone (in French). 2016-10-26. Retrieved 2019-01-20.
  7. "Are Aliens Talking To Us?". NPR.org. Retrieved 2019-01-20.
  8. "Mysteriöses Signal aus dem All: Forscher zweifeln an Alien-Hypothese". Spiegel Online. 2016-08-30. Retrieved 2019-01-20.
  9. "Deuten die mysteriösen Radiosignale aus dem All auf eine Superzivilisation hin?". FOCUS Online (in German). Retrieved 2019-01-20.
  10. Scoles, Sarah (2017-05-23). "A Brief History of SETI@Home". The Atlantic. Retrieved 2019-01-20.
  11. 1 2 Lüdemann, Dagny (2017-02-26). "Aliens: "Ich bin ja kein Verschwörungstheoretiker, aber …"". Die Zeit (in German). ISSN   0044-2070 . Retrieved 2019-01-20.
  12. Schadwinkel, Alina (2017-07-16). "Suche nach Außerirdischen: Kann den Aliens mal einer Bescheid sagen". Die Zeit (in German). ISSN   0044-2070 . Retrieved 2019-01-20.
  13. 1 2 3 4 5 6 Google Scholar author page. Accessed March 21, 2021