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...da2008/> This is the probable (99.4% chance) source of [[X-ray astronomy|X-ray emission]] coming from these coordinates.<ref name=Haakonsen2009/> | journal=Publications of the Astronomical Society of Japan ...

...green 2–8 keV, blue 4–8 keV). Image is about 50 arcmin per side. Credit: X-ray: NASA/CXC/U. Wisconsin/A.Barger et al.; Illustrations: NASA/CXC/M.Weiss.]] ...the typical column density of neutral hydrogen is ''N''_H = 0.6 x 10²⁰ cm⁻².<ref name=Hasinger/> This column density is ...

...disks]] are supported by [[magnetic field]]s, that [[extragalactic cosmic ray]]s are accelerated in them, and he estimates to within an order of magnitud | journal = [[Monthly Notices of the Royal Astronomical Society]] ...

The system is a likely (99.4% chance) source of the [[X-ray astronomy|X-ray emission]] coming from these coordinates.<ref name=Haakonsen2009/> | journal=Monthly Notices of the Royal Astronomical Society ...

...ion times greater than the hydrogen line, and is produced by astrophysical sources such as stars and [[quasar]]s. Neutral hydrogen absorbs Lyman-alpha photons ...= Y. | last5 = Combes | first5 = F. | title = Reionization by UV or X-ray sources | doi = 10.1051/0004-6361/201014347 | journal = Astronomy & Astrophysics | ...

...in a letter in ''[[Physical Review Letters]]'', and suggested that [[gamma-ray]] observations be made of the comet to test this hypothesis.<ref name=NS197 ...the cosmic ray flux indicates that nowhere in the Milky Way are there any sources of heavier antimatter elements (such as carbon), since (although it is not ...

...dal disruption event''' ('''TDE''') is a [[time-domain astronomy|transient astronomical source]] produced when a [[star]] passes so close to a [[supermassive black ...ave since been observed, with detections at optical, infrared, radio and X-ray wavelengths. Sometimes a star can survive the encounter with an SMBH, leavi ...

...direct black hole channel.<ref name=":2">{{Cite web|publisher=[[Chandra X-ray Observatory]] |website=Press Room |title=NASA Telescopes Find Clues For How ...s at z~6|url=http://adsabs.harvard.edu/abs/2001AJ....122.2833F|journal=The Astronomical Journal|volume=122|issue=6|pages=2833–2849|doi=10.1086/324111|arxiv=astro-p ...

In [[general relativity]], a point mass deflects a light ray with [[impact parameter]] <math>b~</math> by an angle approximately equal t ...f [[Newtonian gravity]] can yield exactly half this value, where the light ray is assumed as a massed particle and scattered by the gravitational potentia ...

...e very near part of the infrared spectrum and at that time widely used for astronomical observations. However they required long exposure times and were often hype ...sion from the center is extended and likely comes from a number of stellar sources.<ref name=Davidge2002/> ...

...itation needed|date=April 2020}} It subsequently spread to the fields of [[astronomical spectroscopy]], [[atomic spectroscopy]], and then to other sciences that de ...for Cooperation in Solar Research (which later became the [[International Astronomical Union]]) defined the international angstrom as precisely 1/6438.4696 of the ...

...–665 |chapter=Chapter 16: Formation and evolution of compact stellar X-ray sources |arxiv=astro-ph/0303456 |isbn=978-0-521-82659-4 |name-list-style=amp}}</ref === X-ray binaries === ...

This page lists examples of [[magnetic moment]]s produced by various sources, grouped by '''orders of magnitude'''. The magnetic moment of an object is ...ave weak fields ≲ 10⁹ [[gauss (unit)|G]] (ms pulsars, lowmass X-ray binaries). If these two groups have an evolutionary connection, their dipol ...

...ies|volume=143|pages=23–32|date=10 April 2000|title=The VizieR database of astronomical catalogues |last1=Ochsenbein|first1=F. |first2=P.|last2=Bauer |first3=J.|la | notes = brightest object in [[very-high-energy gamma ray]]s ...

...ence.or.kr/article/JAKO201408739562367.page |journal=Journal of the Korean Astronomical Society |volume=47 |issue=1 |pages=15–39 |arxiv=1401.1911 |bibcode=2014JKAS ...rto |last2=Turolla |first2=Roberto |title=X-ray Polarization from Magnetar Sources |journal=Galaxies |date=February 2024 |volume=12 |issue=1 |pages=6 |doi=10. ...

|caption1=Illustration of an emission of a gamma ray (''γ'') from an atomic nucleus ...ASA guide to electromagnetic spectrum showing overlap of frequency between X-rays and gamma rays]] ...

...ly statistical measurement, but it provides a way to measure the masses of astronomical objects without requiring assumptions about their composition or dynamical ...laxies. The distortion shown here is greatly exaggerated relative to real astronomical systems.]] ...

...as crystals and [[diffraction grating]]s, [[diffraction]] is used with [[X-ray]] light, or even [[electron beam]]s. Measurement techniques for three-dimen By using sources of several wavelengths to generate sum and difference [[Envelope (waves)#Ex ...

| axis_unitless = 3.52 [[astronomical unit|AU]] ...Luhman&nbsp;16&nbsp;A and B orbit each other at a distance of about 3.5 [[astronomical unit]]s{{r|Luhman2013}} with an [[orbital period]] of approximately 26.6 ye ...

[[File:Silver Target in XPS Spectrometer.jpg|thumb|An [[X-ray photoelectron spectroscopy|XPS]] spectrometer]] ...t and continues to be one of its primary uses. Spectrometers are used in [[Astronomical spectroscopy|astronomy]] to analyze the chemical composition of [[Astronomi ...