Seeing the light through diamonds: Direct detection of extrasolar planet

2019 ◽  
Author(s):  
Mikael Karlsson ◽  
Pontus Forsberg ◽  
Dimitri Mawet ◽  
Elsa Huby ◽  
Olivier Absil
Keyword(s):  
Direct Detection ◽  
Extrasolar Planet

scholarly journals Direct imaging of massive extrasolar planets

2010 ◽  
Vol 6 (S276) ◽  
pp. 279-286
Author(s):  
Paul Kalas
Keyword(s):  
Extrasolar Planets ◽  
Direct Detection ◽  
Imaging Techniques ◽  
Planetary Systems ◽  
Extrasolar Planet ◽  
Direct Imaging ◽  
Recent Advances

AbstractThe direct detection of an extrasolar planet can provide accurate measurements of its orbit, mass and composition, greatly improving our understanding of how planets form and evolve. Recent advances in ground-based and space-based imaging techniques have now produced the first direct images of extrasolar planets. Typically these are many-Jupiter-mass planets on wide orbits. Direct imaging therefore probes the outer architecture of planetary systems and it is highly complementary to other techniques sensitive to inner architectures. This brief review summarizes the properties of the currently imaged exoplanets, provides an update on the orbit of Fomalhaut b, and highlights the emerging phenomenon of circumplanetary disks.

Detection and Characterization of earth-like Planets

1997 ◽  
Vol 161 ◽  
pp. 299-311 ◽  
Author(s):  
Jean Marie Mariotti ◽  
Alain Léger ◽  
Bertrand Mennesson ◽  
Marc Ollivier
Keyword(s):  
Direct Detection ◽  
Contrast Ratio ◽  
Angular Size ◽  
Physical Nature ◽  
Major Axis ◽  
Infrared Emission ◽  
Space Technology ◽  
Semi Major Axis ◽  
Earth Like Planets ◽  
Visible Wavelengths

AbstractIndirect methods of detection of exo-planets (by radial velocity, astrometry, occultations,...) have revealed recently the first cases of exo-planets, and will in the near future expand our knowledge of these systems. They will provide statistical informations on the dynamical parameters: semi-major axis, eccentricities, inclinations,... But the physical nature of these planets will remain mostly unknown. Only for the larger ones (exo-Jupiters), an estimate of the mass will be accessible. To characterize in more details Earth-like exo-planets, direct detection (i.e., direct observation of photons from the planet) is required. This is a much more challenging observational program. The exo-planets are extremely faint with respect to their star: the contrast ratio is about 10−10at visible wavelengths. Also the angular size of the apparent orbit is small, typically 0.1 second of arc. While the first point calls for observations in the infrared (where the contrast goes up to 10−7) and with a coronograph, the latter implies using an interferometer. Several space projects combining these techniques have been recently proposed. They aim at surveying a few hundreds of nearby single solar-like stars in search for Earth-like planets, and at performing a low resolution spectroscopic analysis of their infrared emission in order to reveal the presence in the atmosphere of the planet of CO H2O and O3. The latter is a good tracer of the presence of oxygen which could be, like on our Earth, released by biological activity. Although extremely ambitious, these projects could be realized using space technology either already available or in development for others missions. They could be built and launched during the first decades on the next century.

A novel enzyme immunoassay for the direct detection of H. pylori antigens in stool

2001 ◽  
Vol 120 (5) ◽  
pp. A492-A493 ◽  
Author(s):  
E HAINDL ◽  
H BENESCH ◽  
A FINCK ◽  
V MUEHISTEIN ◽  
A LEODOLTER ◽  
...  
Keyword(s):  
Enzyme Immunoassay ◽  
Direct Detection ◽  
H Pylori

Direct detection of heavy metal ions using liquid crystals

2020 ◽  
Author(s):  
Sulayman Oladepo
Keyword(s):  
Heavy Metal ◽  
Liquid Crystals ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Direct Detection

Direct detection of HCV by solid phase hybridization with fluorescent probe

2001 ◽  
Vol 34 (0) ◽  
pp. 110
Author(s):  
E Ilina
Keyword(s):  
Fluorescent Probe ◽  
Solid Phase ◽  
Direct Detection

Influence of timing errors on the performance of direct-detection optical-fibre communication systems

1985 ◽  
Vol 132 (6) ◽  
pp. 309 ◽  
Author(s):  
J.J. O'Reilly ◽  
J.R.F. da Rocha ◽  
K. Schumacher
Keyword(s):  
Optical Fibre ◽  
Communication Systems ◽  
Direct Detection ◽  
Timing Errors ◽  
Optical Fibre Communication

Sensitivity and power penalty considerations for laser preamplified direct detection optical receivers

1989 ◽  
Vol 136 (4) ◽  
pp. 238 ◽  
Author(s):  
R.S. Fyath ◽  
A.J. McDonald ◽  
J.J. O'reilly
Keyword(s):  
Direct Detection ◽  
Optical Receivers ◽  
Power Penalty

Prenatal Diagnosis of Compound Heterozygous Deficiency of Protein C by Direct Detection of the Mutation Sites

1996 ◽  
Vol 76 (02) ◽  
pp. 277-278 ◽  
Author(s):  
Masaru Ido ◽  
Tatsuya Hayashi ◽  
Junji Nishioka ◽  
Masazumi Itoh ◽  
Hiroyuki Minoura ◽  
...  
Keyword(s):  
Prenatal Diagnosis ◽  
Protein C ◽  
Direct Detection ◽  
Compound Heterozygous ◽  
Heterozygous Deficiency
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