Documentos de Antonio Raimondi serán restaurados y digitalizados

"Se recuperarán libretas, acuarelas, planos y láminas hechas por el sabio.
Gracias al convenio firmado entre el Archivo General de la Nación (AGN) y la Asociación Educacional ‘Antonio Raimondi’ será posible restaurar y digitalizar la colección del sabio italiano, que data de los años 1852 a 1869, anunció el ministro de Cultura, Dr. Juan Ossio Acuña. "

Documentos de Antonio Raimondi serán restaurados y digitalizados

Peer pressure keeps planets young...

"Two US astrophysicists claim they have answered an important question about how planets form: why don't young planets get pushed into their companion stars before they have a chance to grow? It turns out that a little company is enough to keep them there, say the researchers, who argue that multiple planets moving through a rocky disk can prevent one another from falling into the star."

Peer pressure keeps young planets growing - physicsworld.com

On sunspots and solar flux

Recurrence plots of sunspots, solar flux and irradiance
by AC Sparavigna
The paper shows the recurrence and cross recurrence plots of three time series, concerning data of the solar activity. The data are the sunspot number and the values of solar radio flux at 10.7 cm and of solar total irradiance, which are known as highly correlated. To compare the series, the radio flux and irradiance values are monthly averaged. Recurrence plots display the oscillating behaviour with remarkable features. Moreover, cross recurrence plots help in identifying time lags between the sunspot number maximum and the maximum of radio or irradiance signals, in circumstances where the data values are highly dispersed. Image processing is useful too, in enhancing the monitoring. An interesting behaviour is displayed by cross recurrence plots of irradiance, which are not symmetric with respect to the line of identity.

http://arxiv.org/abs/0804.1941

Hygroscopic properties of volcanic ash

Hygroscopic properties of volcanic ash
GEOPHYSICAL RESEARCH LETTERS, VOL. 38, L11802, 4 PP., 2011
doi:10.1029/2011GL047298

by  P. Kumar T. L. Lathem A. Nenes J. Dufek I. N. Sokolik M. Trail A. Russell
Volcanic ash is hygroscopic
Water vapor adsorption is the main proceess controlling ash hygroscopicity
The results can be parameterized in a simple correlation for use in models
"Limited observational data exists on the physical interactions between volcanic ash particles and water vapor; yet it is thought that these interactions can strongly impact the microphysical evolution of ash, with implications for its atmospheric lifetime and transport, as well as formation of water and ice clouds. ...The hygroscopicity of the ash particles is quantified by their ability to uptake water and nucleate into cloud drops under controlled levels of water vapor supersaturation. Evidence presented strongly suggests that ash uptakes water efficiently via adsorption and a simple parameterization of ash hygroscopicity is developed for use in ash plume and atmospheric models."

Shrinking atmospheric layer linked to low levels of solar radiation

Changes in the solar energy output may cause the outer atmosphere to contract.

Researches are also showing that solar cycling has differences in the minimum values.

Shrinking atmospheric layer linked to low levels of solar radiation

Snake near the lake

Image from Google Maps: a geoglyph near the Titicaca Lake, Peru.

This image shows a plain area covered by a network of waru-warus, that is, of the "raised fields" - earthworks separated by canals - near the Titicaca Lake. This is an ancient agricultural technique used by Andean people starting from the first millennium BC. Note that the structure of the network is created after a careful planning. Each raised field is approximately 10 meters large and more than one hundred long. 

It seems a snake, the pond as its eye and a forked tongue. More on waru-warus: arXiv:1009.4602 [pdf] Geoglyphs of Titicaca as an ancient example of graphic design, Amelia Carolina Sparavigna, and arXiv:1009.2231 [pdf] Symbolic landforms created by ancient earthworks near Lake Titicaca, Amelia Carolina Sparavigna

Efimov states

"Tractable three-body problems are rare, which is why Vitaly Efimov’s study in 1970 proposing that bound states could exist between three interacting bosons was so intriguing. It took more than3 0 years, though, to observe Efimov states in an ultracold gas of cesium atoms, in which interactions could be controlled with a magnetic field. Now, writing in Physical Review Letters, theorists suggest similar states should also exist between dipolar molecules."

http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.106.233201

The bent pyramid

Google Maps is an excellent service for archaeological survey. Let us look at the Bent Pyramid in Egypt.

After a processing by means of AstroFracTool and GIMP, we have

Or using the wavelets of Iris

Interesting for mapping sites! In my opinion, there are many other structures in these images which are connected to the pyramid (for instance, the one that seems a pool near the upper left corner), besides those listed in the following map.

This map is adapted from: 

http://www.ancientegyptonline.co.uk/bent-pyramid-dashur.html

A new type of supernova

"A new type of supernova that shines up to 10 times brighter than any previously recorded has been discovered by an international team of astronomers. However, the team has yet to explain the exact mechanism that drives this new type of exploding star, with existing models failing to reproduce the radiation emanating from this new class of violent events."

New type of supernova outshines the rest - physicsworld.com

Vídeo: espectacular explosión solar

Una espectacular erupción solar fue captada por la NASA. Aunque sólo es de impacto medio, las imágenes de la eyección de masa coronal son impresionantes.

Read more http://www.connuestroperu.com/ciencia-y-tecnologia/42/18185-video-espectacular-explosion-solar-

Vídeo: espectacular explosión solar