Video Experimental Relacionado
Updated: Jun 7, 2026
10:01
Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging
Published on: September 8, 2017
La detección de una población de galaxias de brillo submilimétrico, fuertemente lentes galaxias
Mattia Negrello1, R Hopwood, G De Zotti
1Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK. m.negrello@open.ac.uk
Science (New York, N.Y.)
|November 6, 2010
Resumen
La detección de lentes gravitacionales en encuestas submilimétricas ahora es simple y eficiente. Los primeros datos de la Herschel Astrophysical Terahertz Large Area Survey muestran altas tasas de éxito para identificar estos fenómenos cósmicos.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Cosmología Cosmología.
Sus antecedentes:
- La lente gravitacional es una herramienta clave para el estudio de las galaxias y el universo.
- La identificación de lentes en grandes conjuntos de datos tradicionalmente lleva mucho tiempo.
- Las longitudes de onda submilimétricas son cruciales para la observación de galaxias polvorientas de formación estelar.
Objetivo del estudio:
- Para demostrar la eficiencia de las encuestas submilimétricas de área amplia en la detección de lentes gravitacionales.
- Para simplificar el proceso de identificación de estos objetos astronómicos.
Principales métodos:
- Utilizó los primeros datos de la Encuesta de Gran Área de Terahertz Astrofísica de Herschel.
- Se analizaron los datos de la encuesta submilimétrica para las firmas de lente gravitacional.
Principales resultados:
- Se detectaron con éxito fuertes eventos de lente gravitacional con alta eficiencia.
- Demostró la simplicidad y facilidad de detección utilizando encuestas submilimétricas de área amplia.
Conclusiones:
- Las encuestas submilimétricas de área amplia son efectivas para identificar lentes gravitacionales.
- Este método reduce significativamente el tiempo y el esfuerzo requeridos para la detección de lentes.
Videos de Conceptos Relacionados
01:10Detection of Black Holes
Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
01:16Confocal Fluorescence Microscopy
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
01:18Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
01:37Super-resolution Fluorescence Microscopy
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.