CHE SIGNIFICA CASSIOPEIA A IN INGLESE
Cassiopeia A
Cassiopeia A è un residuo supernova nella costellazione Cassiopeia e la più luminosa sorgente radio extrasolare nel cielo alle frequenze superiori a 1 GHz. Ha avuto una densità di flusso di 2720 ± 50 Jy a 1 GHz nel 1980; La sua densità di flusso a 1 GHz sta diminuendo ad una velocità di 0,97 ± 0,04 per cento all'anno. Questa diminuzione significa che a frequenze inferiori a 1 GHz Cas A è ora meno intenso di Cyg A. La supernova è avvenuta circa 11.000 anni luce in via lattea. La nuvola in espansione del materiale lasciato dalla supernova ora appare circa 10 anni luce dall'altra dalla prospettiva della Terra. Nonostante la sua luminosità radio, tuttavia, è estremamente debole otticamente e è visibile solo sulle fotografie a lunga esposizione. Si ritiene che la prima luce dell'esplosione stellare abbia raggiunto la Terra circa 300 anni fa, ma non ci sono record storici di eventuali avvistamenti della supernova progenitrice, probabilmente a causa della polvere interstellare che assorbe la radiazione di lunghezza d'onda ottica prima che raggiunga la Terra. Possibili spiegazioni si appoggiano all'idea che la stella di origine era insolitamente massiccia e aveva precedentemente espulso gran parte dei suoi strati esterni.
definizione di Cassiopeia A nel dizionario inglese
La definizione di Cassiopeia A nel dizionario è una fonte radio e radiografica molto potente nella costellazione di Cassiopea, identificata come il residuo di una supernova che si pensa sia avvenuta nel tardo XVII secolo.
PAROLE IN INGLESE ASSOCIATE CON «CASSIOPEIA A»
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10 LIBRI IN INGLESE ASSOCIATI CON «CASSIOPEIA A»
Scopri l'uso di
Cassiopeia A nella seguente selezione bibliografica. Libri associati con
Cassiopeia A e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
The Story of
Cassiopeia:
A Roman Constellation Myth
"Cassiopeia, Queen of Ethiopia, often boasts about her own beauty. When Jupiter finds out that Cassiopeia thinks she's more beautiful than the sea nymphs, he's furious. Will Cassiopeia's words cause her kingdom to fall?"--P. [4] of cover.
2
New Observational and Theoretical Insights on
Cassiopeia A.
Finally, we present calculations from a new multi-dimensional hydrodynamics and non-equilibrium ionization and cooling code designed to model the emission from SNR shocks.
Kristoffer Albert Eriksen,
2009
Food is a necessity; television isn't. Let's talk about something else, okay?"
Cassiopeia wanted to get away from those particular events. As Cassiopeia was
parting Mark's company that evening, Ryan gave Cassiopeia a look which was
as ...
This object still bears the name Cassiopeia A given by radio astronomers to
denote it as the strongest radio source in the constellation. After identifying
Cassiopeia A with this optical nebulosity, Walter Baade and Rudolph Minkowski
used the ...
5
3c Objects: Messier 87, Messier 82,
Cassiopeia A, 3c 273, ...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.
As the underpowered skiffs struggled to put distance between them and the
CassiOpeia, a new craft appeared. “Sire the Chariot-Class vessel I noted earlier
is back and it isn't a hologram” Pennon Sevaw-Ria announced nervously. “
Access the ...
K. L. James, L James K L James,
2009
7
The Guide to the Galaxy
The expansion of the Cassiopeia A 'supernova remnant' gives us a fairly precise
way to measure its distance, and it turns out to lie just over 9 000 light years away
: firmly in the Perseus Arm. If the supernova were similar to those we see in ...
... has been the overwhelming victor in that space. But with the April release of
the Pocket PC platform, Microsoft has improved its Windows CE operating system
Microphone enough to give CE-based devices such as Casio's Cassiopeia a
new ...
At present, these reference objects must be chosen from among the most intense
sources, Cassiopeia A, Cygnus A, Taurus A and Virgo A. The utility of both
Cygnus A and Taurus A is impaired by their close proximity to other discrete
sources ...
Sir Francis Graham-Smith,
1952
Weaves a magical tale about an orphan girl named Momo whose unstinting goodness nurtures wisdom and happiness in the people around her and who becomes the prey of sinister figures
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «CASSIOPEIA A»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
Cassiopeia A nel contesto delle seguenti notizie.
The Only Three Heavy Elements In The Universe That Aren't Made …
Image credit: NASA / JPL-Caltech; Chandra / Spitzer / Hubble composite of the Cassiopeia A supernova remnant. And when those energetic ... «Forbes, lug 15»
Annual Appearance Of Strawberry Moon Set For June 2
Gravitational Waves 'Discovered' in 2014 is Probably Space Dust · Galactic CAT Scan Reveals Bubbly Interior of Supernova Cassiopeia A ... «Tech Times, giu 15»
Watch the off-kilter explosion of a supergiant star
NuSTAR recently created detailed titanium-44 maps of another supernova remnant, called Cassiopeia A, and there too it found signs of an ... «Futurity: Research News, mag 15»
Mysterious supernova still astounds astronomers
The new findings follow similar observations made by NuSTAR last year of another supernova remnant, called Cassiopeia A, which also ... «ABC Science Online, mag 15»
Astronomy Photo of the Day — G327.1-1.1
... as the most beautiful nebulae the universe has to offer (as an example, the Crab Nebula is a supernova remnant, as is Cassiopeia A). «From Quarks to Quasars, mag 15»
Strange Object Found -- "The Long-Sought 'Missing Link' That …
In 2007 NASA's Spitzer space telescope found the infrared signature of silica (sand) in the core-collapse supernova remnant Cassiopeia A ... «The Daily Galaxy, apr 15»
Why the constellation Cassiopeia holds a wealth of night-sky treasures
For Radio Astronomers, Cassiopeia contains Cassiopeia A, an extremely bright extrasolar radio source, the remnants of a supernova. There is ... «Christian Science Monitor, apr 15»
Hubble at 25: the best images from the space telescope - in pictures
A detailed look at the remains of a supernova explosion known as Cassiopeia A. It is the youngest known remnant from a supernova explosion ... «The Guardian, apr 15»
Cosmic Building Block Dust From An Ancient Supernova Found
This has been observed in several young supernova remnants - such as the famed SN1987A and Cassiopeia A. In the turbulent supernova ... «Science 2.0, mar 15»
Say cheese! Hubble Telescope spots smiley face in space
Blue in this image of Cassiopeia A represents radioactive material. ... Supernova Cassiopeia A supernova SN 2014J supernova SN2014J hand ... «CNN, feb 15»