View source for Radiation/Analysis

You do not have permission to edit this page, for the following reason:

Your IP address is in a range that has been blocked on all Wikimedia Foundation wikis.

The block was made by ‪Jon Kolbert‬. The reason given is Open proxy/Webhost: See the help page if you are affected .

Start of block: 05:38, 21 February 2024
Expiry of block: 05:38, 21 February 2029

Your current IP address is 35.175.133.157. The blocked range is 35.175.0.0/16.

Please include all above details in any queries you make. If you believe you were blocked by mistake, you can find additional information and instructions in the No open proxies global policy.

Otherwise, to discuss the block please post a request for review on Meta-Wiki. You could also send an email to the stewards VRT queue at stewards@wikimedia.org including all above details.

You can view and copy the source of this page.

'''Analysis''' is the process of dividing a phenomenon into parts that appear to be separate.

As a part of [[theoretical astronomy]], an analysis allows the investigator to determine which parts are already understood by previous observations and applicable models.

Previous analysis should have its findings verified statistically by comparing model-generated calculations with numerical observations.

The analysis and subsequent discussion and conclusions constitute '''analytical astronomy'''.
{{clear}}

==Astronomy==
[[Image:Mira the star-by Nasa alt crop.jpg|thumb|center|500px|This ultraviolet-wavelength image mosaic, taken by NASA's Galaxy Evolution Explorer (GALEX), shows a comet-like "tail" stretching 13 light years across space. Credit: NASA.]]
A '''nomy''' (Latin ''nomia'') is a "system of [[law]]s governing or [the] sum of [[knowledge]] regarding a (specified) field."<ref name=Gove>{{ cite book
|author=
|title=Webster's Seventh New Collegiate Dictionary
|publisher=G. & C. Merriam Company
|location=Springfield, Massachusetts
|year=1963
|editor=Philip B. Gove
|pages=1221
|url=https://books.google.com/books?id=JtN_tgEACAAJ
|bibcode=
|doi=
|pmid=
|isbn=
|accessdate=2011-08-26 }}</ref> ''Nomology'' is the "[[science]] of physical and logical laws."<ref name=Gove/>

When any effort to acquire a system of laws or knowledge focusing on an ''astr'', ''aster'', or ''astro'', that is, any natural body in the sky especially at night,<ref name=Gove/> succeeds even in its smallest [[measurement]], '''astronomy''' is the name of the effort and the result.
{{clear}}

==Analysis==
{{main|Analysis}}
'''Def.'''
# "[d]ecomposition into components in order to study (a complex thing, concept, theory...)",<ref name=AnalysisWikt1>{{ cite book
|author=[[wikt:User:Denispir|Denispir]]
|title=analysis
|publisher=Wikimedia Foundation, Inc
|location=San Francisco, California
|date=13 August 2013
|url=https://en.wiktionary.org/wiki/analysis
|accessdate=2014-06-04 }}</ref>
# the "action of taking something apart to in order to study it",<ref name=AnalysisWikt/>
# the "mathematical study of functions, sequences, series, limits, derivatives and integrals",<ref name=AnalysisWikt/> or
# the "process of breaking down a substance into its constituent parts",<ref name=AnalysisWikt>{{ cite book
|author=[[wikt:User:Paul G|Paul G]]
|title=analysis
|publisher=Wikimedia Foundation, Inc
|location=San Francisco, California
|date=23 May 2014
|url=https://en.wiktionary.org/wiki/analysis
|accessdate=2014-06-04 }}</ref>

is called '''analysis'''.

'''Def.''' "a minute and detailed examination or analysis"<ref name=DissectionWikt>{{ cite book
|author=[[wikt:User:SemperBlotto|SemperBlotto]]
|title=dissection
|publisher=Wikimedia Foundation, Inc
|location=San Francisco, California
|date=18 December 2005
|url=https://en.wiktionary.org/wiki/dissection
|accessdate=2014-06-04 }}</ref> is called a '''dissection'''.

==Theoretical analytical astronomy==

==X-rays==
{{main|Radiation astronomy/X-rays|X-ray astronomy|X-rays}}
"Analytical [[X-ray astronomy]] is applied to an astronomy puzzle in an attempt to provide an acceptable solution. Consider the following puzzle."<ref name=Marshallsumter1>{{ cite book
|author=[[User:Marshallsumter|Marshallsumter]]
|title=X-ray astronomy
|publisher=Wikimedia Foundation, Inc
|location=San Francisco, California
|date=April 15, 2013
|url=http://en.wikipedia.org/wiki/X-ray_astronomy
|accessdate=2013-05-11 }}</ref>

"High-mass X-ray binaries (HMXBs) are composed of OB supergiant companion stars and compact objects, usually neutron stars (NS) or black holes (BH). Supergiant X-ray binaries (SGXBs) are HMXBs in which the compact objects orbit massive companions with orbital periods of a few days (3–15 d), and in circular (or slightly eccentric) orbits. SGXBs show typical the hard X-ray spectra of accreting [[w:pulsar|pulsar]]s and most show strong absorption as obscured HMXBs. X-ray luminosity (''L''<sub>x</sub>) increases up to 10<sup>36</sup> erg·s<sup>−1</sup> (10<sup>29</sup> watts)."<ref name=Marshallsumter1/>

"The mechanism triggering the different temporal behavior observed between the classical SGXBs and the recently discovered supergiant fast X-ray transients (SFXT)s is still debated.<ref name=ZuritaHeras>{{ cite journal
|author=Zurita Heras JA, Chaty S
|title=Discovery of an eccentric 30 day period in the supergiant X-ray binary SAX J1818.6–1703 with INTEGRAL
|journal=Astronomy and Astrophysics
|year=2009
|volume=493
|issue=1
|page=L1
|doi=10.1051/0004-6361:200811179
|bibcode=2009A&A...493L...1Z|arxiv = 0811.2941 }}</ref>"<ref name=Marshallsumter1/>

"Aim: use the discovery of long orbits (>15 d) to help discriminate between emission models and perhaps bring constraints on the models."<ref name=Marshallsumter1/>

"Method: analyze archival data on various SGXBs such as has been obtained by INTEGRAL for candidates exhibiting long orbits. Build short- and long-term light curves. Perform a timing analysis in order to study the temporal behavior of each candidate on different time scales."<ref name=Marshallsumter1/>

"Compare various astronomical models:
* direct spherical accretion
* Roche-Lobe overflow via an accretion disk on the compact object."<ref name=Marshallsumter1/>

"Draw some conclusions: for example, the SGXB SAX J1818.6-1703 was discovered by BeppoSAX in 1998, identified as a SGXB of spectral type between O9I−B1I, which also displayed short and bright flares and an unusually very low quiescent level leading to its classification as a SFXT.<ref name=ZuritaHeras/> The analysis indicated an unusually long orbital period: 30.0 ± 0.2 d and an elapsed accretion phase of ~6 d implying an elliptical orbit and possible supergiant spectral type between B0.5-1I with eccentricities e ~ 0.3–0.4.<ref name=ZuritaHeras/> The large variations in the X-ray flux can be explained through accretion of macro-clumps formed within the stellar wind.<ref name=ZuritaHeras/>"<ref name=Marshallsumter1/>

"Choose which model seems to work best: for SAX J1818.6-1703 the analysis best fits the model that predicts SFXTs behave as SGXBs with different orbital parameters; hence, different temporal behavior.<ref name=ZuritaHeras/>"<ref name=Marshallsumter1/>

==Classical history==
{{main|History/Classics|Classical history}}
The '''classical history''' period dates from around 2,000 to 1,000 b2k.

"The basic trigonometry of Hipparchus was extended by scholars in Baghdad into spherical trigonometry under the stimulus of astronomical calculation. Al Farghani (d 861) first calculated longitudes and wrote down the elements of analytical astronomy."<ref name=Warren>{{ cite journal
|author=John Warren
|title=War and the Cultural Heritage of Iraq: a sadly mismanaged affair
|journal=Third World Quarterly
|month=
|year=2005
|volume=26
|issue=4-5
|pages=815-30
|url=http://www.tandfonline.com/doi/abs/10.1080/01436590500128048
|arxiv=
|bibcode=
|doi=10.1080/01436590500128048
|pmid=
|accessdate=2014-06-04 }}</ref>

==Technology==
{{main|Technology}}

==Hypotheses==
{{main|Hypotheses}}
# Analysis of observations allows the differentiation of contributory sources.

==See also==
{{div col|colwidth=12em}}
* [[Radiation astronomy]]
* [[X-ray astronomy]]
{{Div col end}}

==References==
{{reflist|2}}

==Further reading==
* {{ cite journal
|author=Manuel Güdel
|title=X-ray astronomy of stellar coronae
|journal=The Astronomy and Astrophysics Review
|month=September
|year=2004
|volume=12
|issue=2-3
|page=71–237
|url=
|arxiv=astro-ph/0406661
|bibcode=2004A&ARv..12...71G
|doi=10.1007/s00159-004-0023-2
|pmid=
|accessdate=2012-08-06 }}

==External links==
* [http://www.ajol.info/ African Journals Online]
* [http://www.bing.com/search?q=&go=&qs=n&sk=&sc=8-15&qb=1&FORM=AXRE Bing Advanced search]
* [http://books.google.com/ Google Books]
* [http://scholar.google.com/advanced_scholar_search?hl=en&lr= Google scholar Advanced Scholar Search]
* [http://www.iau.org/ International Astronomical Union]
* [http://www.jstor.org/ JSTOR]
* [http://www.lycos.com/ Lycos search]
* [http://nedwww.ipac.caltech.edu/ NASA/IPAC Extragalactic Database - NED]
* [http://nssdc.gsfc.nasa.gov/ NASA's National Space Science Data Center]
* [http://www.osti.gov/ Office of Scientific & Technical Information]
* [http://www.ncbi.nlm.nih.gov/pccompound PubChem Public Chemical Database]
* [http://www.questia.com/ Questia - The Online Library of Books and Journals]
* [http://online.sagepub.com/ SAGE journals online]
* [http://www.adsabs.harvard.edu/ The SAO/NASA Astrophysics Data System]
* [http://www.scirus.com/srsapp/advanced/index.jsp?q1= Scirus for scientific information only advanced search]
* [http://cas.sdss.org/astrodr6/en/tools/quicklook/quickobj.asp SDSS Quick Look tool: SkyServer]
* [http://simbad.u-strasbg.fr/simbad/ SIMBAD Astronomical Database]
* [http://simbad.harvard.edu/simbad/ SIMBAD Web interface, Harvard alternate]
* [http://nssdc.gsfc.nasa.gov/nmc/SpacecraftQuery.jsp Spacecraft Query at NASA]
* [http://www.springerlink.com/ SpringerLink]
* [http://www.tandfonline.com/ Taylor & Francis Online]
* [http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/convcoord/convcoord.pl Universal coordinate converter]
* [http://onlinelibrary.wiley.com/advanced/search Wiley Online Library Advanced Search]
* [http://search.yahoo.com/web/advanced Yahoo Advanced Web Search]

<!-- footer templates -->
{{Radiation astronomy resources}}{{Sisterlinks|Analytical astronomy}}

<!-- categories -->
[[Category:Astrophysics/Lectures]]
[[Category:Radiation astronomy/Lectures]]
[[Category:Resources last modified in March 2019]]

Templates used on this page:

Template:Citation/core (edit)
Template:Citation/identifier (edit)
Template:Citation/make link (edit)
Template:Cite book (edit)
Template:Cite journal (edit)
Template:Clear (edit)
Template:Div col (view source) (protected)
Template:Div col/styles.css (view source) (protected)
Template:Div col end (view source) (protected)
Template:Hide in print (edit)
Template:Hlist/styles.css (view source) (protected)
Template:Main (edit)
Template:Main other (edit)
Template:Mbox (edit)
Template:Navbox (edit)
Template:Only in print (edit)
Template:Radiation astronomy resources (edit)
Template:Reflist (view source) (protected)
Template:Reflist/styles.css (edit)
Template:Sisterlinks (edit)
Template:Sisterprojectsearch (edit)
Module:Arguments (edit)
Module:Check for unknown parameters (edit)
Module:Format link (view source) (protected)
Module:Hatnote (view source) (protected)
Module:Hatnote/styles.css (edit)
Module:Hatnote list (edit)
Module:Labelled list hatnote (view source) (semi-protected)
Module:Message box (edit)
Module:Message box/ambox.css (edit)
Module:Message box/configuration (edit)
Module:Navbar (view source) (protected)
Module:Navbar/configuration (view source) (protected)
Module:Navbar/styles.css (view source) (protected)
Module:Navbox (view source) (protected)
Module:Navbox/configuration (edit)
Module:Navbox/styles.css (edit)
Module:Yesno (edit)

Return to Radiation/Analysis.

Retrieved from "https://en.wikiversity.org/wiki/Radiation/Analysis"