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List Of X-ray Pulsars ...
This is a partial list of known accretion-powered pulsars, as of 1997. LMXB IMXB HMXB BeXB See also * Lists of astronomical objects References Observations of Accreting Pulsars Bildsten, L., et al., 1997, Astrophysical Journal Supplement Series, 113, p. 367 {{Neutron star +List of X-ray pulsars *List of X-ray pulsars * X-ray pulsars X-ray pulsars or accretion-powered pulsars are a class of astronomical objects that are X-ray sources displaying strict periodic variations in X-ray intensity. The X-ray periods range from as little as a fraction of a second to as much as several m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Classification
In astronomy, stellar classification is the classification of stars based on their stellar spectrum, spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a Prism (optics), prism or diffraction grating into a spectrum exhibiting the Continuum (spectrum), rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule, with the line strength indicating the abundance of that element. The strengths of the different spectral lines vary mainly due to the temperature of the photosphere, although in some cases there are true abundance differences. The ''spectral class'' of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere's temperature. Most stars are currently classified under the Morgan–Keenan (MK) system using the letters ''O'', ''B'', ''A'', ''F'', ''G'', ''K'', and ''M'', a sequence from the hottest (''O'' type) to the coo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vela X-1
Vela or Velas may refer to: Astronomy * Vela (constellation), a constellation in the southern sky (the Sails) ** Vela (Chinese astronomy) ** Vela Pulsar ** Vela X-1, a pulsing, eclipsing high-mass X-ray binary system Places * Vela Bluff, Antarctica *Vela, Dolj, Romania * Vela (Ilidža – Sarajevo), Bosnia and Herzegovina * Velas, Maharashtra, India Ships * '' CMA CGM Vela'', a container ship in service since 2008 * USNS ''Vela'' (T-AK-89), US Army port repair ship * ''Vela''-class submarine, of the Indian Navy ** INS ''Vela'' (S40), in service 1973–2010 Technology * Project Vela, a system developed by the United States to monitor compliance with the Partial Test Ban Treaty ** Vela (satellite), a series of satellites launched by the United States to monitor nuclear testing *** Vela Incident, an international incident, in which a Vela satellite is thought to possibly have observed a nuclear test * Versatile Laboratory Aid (VELA), a data logging tool used in education Peo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V0332+53
V, or v, is the twenty-second and fifth-to-last letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''vee'' (pronounced ), plural ''vees''. History The letter V ultimately comes from the Phoenician letter ''waw'' by way of U. See U for details. During the Late Middle Ages, two minuscule glyphs of U developed which were both used for sounds including and modern . The pointed form "v" was written at the beginning of a word, while a rounded form "u" was used in the middle or end, regardless of sound. So whereas "valour" and "excuse" appeared as in modern printing, "have" and "upon" were printed as "haue" and "vpon". The first distinction between the letters "u" and "v" is recorded in a Gothic script from 1386, where "v" preceded "u". By the mid-16th century, the "v" form was used to represent the consonant and "u" the vowel sound, giving us the modern letter V. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V635 Cas
This is a list of Motorola V series mobile phones. V60i The V60i expanded upon the hugely popular V60 model. However, the V60i was not as popular. A common problem with this model was the antenna snapping off for no particular reason. Instead of recalling the model, Motorola introduced the V60t Color, a large improvement from its predecessor (now discontinued). Recently there have been Motorola V60i models that include a non-retractable antenna that does not tend to snap off like its predecessor. The V60i for Verizon Wireless was also included with some Mercedes-Benz models in the mid-2000s, and integrated with the vehicle's COMAND infotainment system, as well as its telematics system. In these vehicles, the V60i included Mercedes-Benz branding. V101 / vBox The v101/vBox was a GSM 900/1800/1900 MHz phone, with a gray scale screen, and one of the first actual QWERTY keyboards available. It arrived and left the world of cellphones in mid and late 2002. V170-173 ''See'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4U 0115+63
4U or 4 U may refer to: Music * ''4U'' (album), by Elva Hsiao, 2002 * ''4U'' (Christina Milian EP), 2015 * ''4 U'' (Cody Simpson EP), 2010 * '' 4U: Outside'', an EP by BtoB, 2021 * "4U", a song by Aero Chord, 2015 * "4 U", a song by Korn from '' Issues'', 1999 * "4U", a song by Pi'erre Bourne from '' The Life of Pi'erre 5'', 2021 Other uses * Germanwings (IATA code), an airline * 4U, a rack unit A rack unit (abbreviated U or RU) is a unit of measure defined as . It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby th ... size * 4U, the final (4th) catalog of Uhuru x-ray sources See also * U4 (other) * For You (other) {{Letter-NumberCombDisambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A0538-67
A, or a, is the first Letter (alphabet), letter and the first vowel of the Latin alphabet, Latin alphabet, used in the English alphabet, modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is English alphabet#Letter names, ''a'' (pronounced ), plural English alphabet#Letter names, ''aes''. It is similar in shape to the Greek alphabet#History, Ancient Greek letter alpha, from which it derives. The Letter case, uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English grammar, "English articles, a", and its variant "English articles#Indefinite article, an", are Article (grammar)#Indefinite article, indefinite arti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
