Extrasolar planet

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An extrasolar planet, or exoplanet, is a planet outside the Solar System. (Wikipedia.org)






Conferences related to Extrasolar planet

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2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA )

ETFA focus is on the latest developments and new technologies in the field of industrial and factory automation. The conference aims to exchange ideas with both industry leaders and a variety of experienced researchers, developers, and practitioners from several industries, research institutes, and academia


2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)

Technical presentations will range from the fundamental physics of electron emission and modulated electron beams to the design and operation of devices at UHF to THz frequencies, theory and computational tool development, active and passive components, systems, and supporting technologies.System developers will find that IVEC provides a unique snapshot of the current state-of-the-art in vacuum electron devices. These devices continue to provide unmatched power and performance for advanced electromagnetic systems, particularly in the challenging frequency regimes of millimeter-wave and THz electronics.Plenary talks will provide insights into the history, the broad spectrum of fundamental physics, the scientific issues, and the technological applications driving the current directions in vacuum electronics research.


2020 IEEE International Conference on Image Processing (ICIP)

The International Conference on Image Processing (ICIP), sponsored by the IEEE SignalProcessing Society, is the premier forum for the presentation of technological advances andresearch results in the fields of theoretical, experimental, and applied image and videoprocessing. ICIP 2020, the 27th in the series that has been held annually since 1994, bringstogether leading engineers and scientists in image and video processing from around the world.


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Symposium on Information Theory (ISIT)

Information theory, coding theory, communication theory, signal processing, and foundations of machine learning


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Periodicals related to Extrasolar planet

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Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Computing in Science & Engineering

Physics, medicine, astronomy—these and other hard sciences share a common need for efficient algorithms, system software, and computer architecture to address large computational problems. And yet, useful advances in computational techniques that could benefit many researchers are rarely shared. To meet that need, Computing in Science & Engineering (CiSE) presents scientific and computational contributions in a clear and accessible format. ...


Intelligent Systems, IEEE

IEEE Intelligent Systems, a bimonthly publication of the IEEE Computer Society, provides peer-reviewed, cutting-edge articles on the theory and applications of systems that perceive, reason, learn, and act intelligently. The editorial staff collaborates with authors to produce technically accurate, timely, useful, and readable articles as part of a consistent and consistently valuable editorial product. The magazine serves software engineers, systems ...


Proceedings of the IEEE

The most highly-cited general interest journal in electrical engineering and computer science, the Proceedings is the best way to stay informed on an exemplary range of topics. This journal also holds the distinction of having the longest useful archival life of any EE or computer related journal in the world! Since 1913, the Proceedings of the IEEE has been the ...


Signal Processing Magazine, IEEE

IEEE Signal Processing Magazine is ranked as the number three most-cited journal in Electrical and Electronics Engineering in 2004, according to the annual Journal Citation Report (2004 edition) published by the Institute for Scientific Information. Read more at http://www.ieee.org/products/citations.html. This publication features tutorial style papers on signal processing research and applications. The primary means of communication of the society leadership ...


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Most published Xplore authors for Extrasolar planet

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Xplore Articles related to Extrasolar planet

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Waiting for Godot? [AP-S Turnstile]

IEEE Antennas and Propagation Magazine, 2010

Over the last three centuries, there have been many advances in optical telescopes. To find planets that may support life like our own planet, astronomers have to search for planets that orbit stars at the "Goldilocks" distance: not so close that they will be unbearably hot "Jupiters," and not so far away that they will be frozen "Plutos." Locating objects ...


MOEMS-based programmable diffraction gratings for future astronomical instruments

2009 IEEE/LEOS International Conference on Optical MEMS and Nanophotonics, 2009

Programmable diffraction gratings show new functionalities for future space instruments, including spectrometers, wideband sharp-edge filters or dichroiumlc plates with fully adjustable transmission. Successful implementation in Darwin-like mission has been demonstrated on a breadboard. Exo-planet spectra without and with life signatures could be clearly measured.


Intermodulation by Uplink Signal at Low Earth Orbiting Satellite Ground Station

2005 18th International Conference on Applied Electromagnetics and Communications, 2005

The project "MOST" (Microvariability and Oscillations of Stars) is a Canadian micro satellite space telescope mission. The micro satellite carries a Rumak- Maksutov telescope with an aperture of 15 cm. The size of the satellite is 65 cm times 65 cm times 30 cm and the mass is about 65 kg. The goals of the mission are to analyze the ...


Detection of extra solar planets using parametric modeling

1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999

We present an algorithm for the detection of extra-solar planets by occultation on the satellite COROT. Under a high flux assumption, the signal is modeled as an autoregressive process having equal mean and variance. A transit of a planet in front of a star will produce an abrupt jump in the mean/variance of the process. The Neyman-Pearson detector is derived ...


Precise wavefront correction with unbalanced nulling interferometer for direct detection of exo-planet

2007 Conference on Lasers and Electro-Optics - Pacific Rim, 2007

We propose a pre-optical system for a stellar coronagraph to reduce the speckle noise. It consists of an (amplitude-) unbalanced nulling interferometer (UNI) and phase and amplitude correction (PAC) with two deformable mirrors. We have demonstrated that an initial wavefront error of lambda/82 is 3.9 times magnified to lambda/22 by the UNI.


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Educational Resources on Extrasolar planet

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IEEE-USA E-Books

  • Waiting for Godot? [AP-S Turnstile]

    Over the last three centuries, there have been many advances in optical telescopes. To find planets that may support life like our own planet, astronomers have to search for planets that orbit stars at the "Goldilocks" distance: not so close that they will be unbearably hot "Jupiters," and not so far away that they will be frozen "Plutos." Locating objects within the bright glare of a host star is no easy task. However, as reported in a recent paper in Nature by a Jet Propulsion Laboratory (JPL) group, scientists have made tremendous progress in the field. The JPL group used "wavefront correction" techniques applied to coronagraphs to optically observe a planet orbiting its host 33 light years away, with a relatively small (1.5 m) Earth-based telescope. When it comes to searching for extraterrestrial intelligence (SETI), the tool of choice for the last fifty years has been a radio telescope, rather than an optical telescope. Almost 1,000 star systems have been scrutinized for "intelligent" radio signals using increasingly sophisticated phased-array antennas. The Allen Telescope Array (funded largely by Paul Allen, cofounder of Microsoft) in California currently has 42 dish antennas, each 6 m in diameter. It is eventually supposed to grow to 350 dishes, and should be able to observe one million star systems within a decade.

  • MOEMS-based programmable diffraction gratings for future astronomical instruments

    Programmable diffraction gratings show new functionalities for future space instruments, including spectrometers, wideband sharp-edge filters or dichroiumlc plates with fully adjustable transmission. Successful implementation in Darwin-like mission has been demonstrated on a breadboard. Exo-planet spectra without and with life signatures could be clearly measured.

  • Intermodulation by Uplink Signal at Low Earth Orbiting Satellite Ground Station

    The project "MOST" (Microvariability and Oscillations of Stars) is a Canadian micro satellite space telescope mission. The micro satellite carries a Rumak- Maksutov telescope with an aperture of 15 cm. The size of the satellite is 65 cm times 65 cm times 30 cm and the mass is about 65 kg. The goals of the mission are to analyze the inner structure of stars, set a lower limit to the age of the universe and to search for Exoplanets. The project MOST consists of a low Earth orbiting (LEO) Satellite and three ground stations, one of them in Vienna (W. Weiss and W. Keim, 2003). The Vienna ground station system was set up at the Institute for Astronomy of the University of Vienna in cooperation with the Institute of Communications and Radio-Frequency Engineering of the Vienna University of Technology. The ground satellite station in Vienna is installed in urban area with high penetration of GSM 1800 mobile systems. This paper presents the investigations related to the possibility of disturbances by the intermodulation factors generated by uplink signal and GSM 1800 mobile signals

  • Detection of extra solar planets using parametric modeling

    We present an algorithm for the detection of extra-solar planets by occultation on the satellite COROT. Under a high flux assumption, the signal is modeled as an autoregressive process having equal mean and variance. A transit of a planet in front of a star will produce an abrupt jump in the mean/variance of the process. The Neyman-Pearson detector is derived when the abrupt change parameters are known. The theoretical distribution of the test statistic is obtained allowing the computation of the ROC curves. The generalized likelihood ratio detector is then studied for the practical case were the change parameters are unknown. This detector requires the maximum likelihood estimates of the parameters. ROC curves are then determined using computer simulations.

  • Precise wavefront correction with unbalanced nulling interferometer for direct detection of exo-planet

    We propose a pre-optical system for a stellar coronagraph to reduce the speckle noise. It consists of an (amplitude-) unbalanced nulling interferometer (UNI) and phase and amplitude correction (PAC) with two deformable mirrors. We have demonstrated that an initial wavefront error of lambda/82 is 3.9 times magnified to lambda/22 by the UNI.

  • Residual speckle removal by aperture modification

    Imaging extra-solar planets requires exceptional dynamic range detection. Extreme adaptive optics and coronagraphy improve the planet-to-star intensity ratio, but residual atmospheric speckles still dominate the field of view. Optics images are reduced by removing redundancies. Some speckles are always left, pinned mostly to the Airy rings of the stellar image, and these obscure the planets. Adding corrective phase to the deformable mirror can modulate the speckles, but only further off the central star. Breaking the symmetry of the telescope aperture, namely by applying a non-centrosymmetric mask to its image the shape of the diffraction rings is modified. Thus we rotated this mask to wobble the rings and the speckles pinned to them enough to reveal planets hidden below them. Having a set of star-planet images at different mask rotations, there are different ways to data analysis. In essence, the intensity in each pixel of the image is modulated by the mask rotation. However, the time trace is strongly affected by pixel location, atmospheric residual errors, Poisson noise from star and planet, and detector read-out noise. The temporal approach to identify the harmonic signal and the planet's constant bias was not very successful for faint objects. Model has been developed for this case of statistics of minima with added noisy periodic signals for testing on simulated data. Finally it should be noted that this simple method can also improve the contrast ratio and the resolution of other imaging systems, such as in microscopy.

  • Isolation measurement between uplink and downlink antennas at low earth orbiting satellite ground station

    The project "MOST" (micro variability and oscillations of stars) is a Canadian micro satellite space telescope mission. The micro satellite carries a Rumak- Maksutov telescope with an aperture of 15 cm. The size of the satellite is 65 cm times 65 cm times 30 cm and the mass is about 65 kg. The goals of the mission are to analyze the inner structure of stars, set a lower limit to the age of the universe and to search for exoplanets. The project MOST consists of a low earth orbiting (LEO) Satellite and three ground stations, one of them in Vienna. The satellite link operates on 2 GHz band. The separate antennas are used for uplink and downlink in order to achieve better downlink margin. The isolation measurement between uplink and downlink antennas is presented.

  • An extended-wavelength exoplanet spectral model based on MODTRAN<sup>®</sup>5

    We overview a recently developed planetary radiative transfer (RT) model, PLANETS (PLANETary Spectroscopy), which is based on the MODTRAN®5 band model RT algorithms. The basic features and RT algorithms are described and an application of PLANETS to a variety of observed Neptune spectra, spanning a broad spectral region, ultraviolet through far infrared, is highlighted. We also apply PLANETS to analysis of the recently reported observation of the thermal infrared emission spectrum of the exoplanet HR 8799c. We attribute the observed spectral features to CH4transmission and emission lines, located to the blue and red of the 4.3 μm CO2band edge, respectively.

  • Femtosecond laser frequency comb for precision astrophysical spectroscopy

    High-resolution spectroscopy is a crucial tool for cosmology and the search for extrasolar planets. We present a laser comb with up to 40-GHz line spacing for use as a new spectrographic calibration source.

  • High dynamic range optical system for direct detection of exo-planets by unbalanced nulling interferometer and adaptive optics

    We proposed a pre-optical system for a stellar coronagraph to reduce stellar speckle noise for direct detection of exo-planets. It consists of an unbalanced nulling interferometer (UNI) and phase and amplitude correction (PAC) system. We demonstrated a magnification of a wavefront aberration (from lambda/138 to lambda/21 rms) by the UNI, and correction of the aberration to lambda/121 rms by the PAC. We also evaluated nulling performance of a coronagraph with the UNI-PAC system.



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