File:Chandra Deep Field-North- (2001-cdfn - cdfn hdfn).jpg

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This side-by-side presentation of the Hubble Deep Field-North (left) and the Chandra Deep Field-North (right) clearly demonstrates the importance of looking at the universe in both the optical and X-ray regimes.

Summary

Description	English: This side-by-side presentation of the Hubble Deep Field-North (left) and the Chandra Deep Field-North (right) clearly demonstrates the importance of looking at the universe in both the optical and X-ray regimes. Twelve X-ray sources are detected in the HDF-N. The false colors represent the "X-ray color" of the objects. Objects that appear more red are cooler in the X-ray band, while objects that appear more blue are hotter in the X-ray band. About half of the sources show strong evidence that the X-rays are due to accretion onto supermassive black holes. The other sources have much lower luminosities, and in several cases are fairly nearby. In these galaxies, the Chandra X-ray detection is most likely the summed emission from a handful (or even one) bright sources within the galaxy, such as stellar-size black holes in binary star systems, the hot gas within the galaxy, or the remnants of supernova explosions. Chandra is thus now peering far enough into the universe to detect the type of X-ray emission that one finds in "normal" galaxies such as the Milky Way. This allows us to look back several billion years to see what our own galaxy and neighborhood (the Local Group) might have been like at earlier times.
Date	13 March 2001 (upload date)
Source	Chandra Deep Field-North:
Author	NASA/PSU/G.Garmire, N.Brandt, et al.
Other versions	TIFF version PDF version JPG version
Category InfoField	Cosmology/Deep Fields/X-ray Background, Black Holes
Color Code InfoField	Colors indicate temperature or X-ray hardness, but brighter sources are more intense.
Constellation InfoField	Ursa Major
Coordinates (J2000) InfoField	RA 12h 36m 45.70s
Observation Date(s) InfoField	November 1999 - February 2001
Observation ID(s) InfoField	580, 966, 967, 957, 1671, 2386, 2344
Observation Time InfoField	139 hours
Scale InfoField	Image is 2.5 arcmin across.
Instruments InfoField	ACIS

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Credit and attribution belongs to the Chandra X-ray Center, NASA/SAO/Penn State University/MIT

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	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	16:01, 20 October 2024		726 × 346 (87 KB)	OptimusPrimeBot (talk \| contribs)	#Spacemedia - Upload of https://chandra.si.edu/photo/2001/cdfn/cdfn_hdfn.jpg via Commons:Spacemedia

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Image title	Chandra's extremely deep image provides a crucial view of one of the most intensively studied patches of the night sky, the Hubble Deep Field North. This area has been examined at all wavelengths, from radio through optical and now X-ray. About half the X-ray sources in this image are due to matter falling into supermassive black holes in the centers of active galaxies and quasars. Other sources include galaxies that are much like our own Milky Way galaxy, but several billion years younger. The X-rays are color coded with shades of red representing lower energies and blue representing the highest energies.
Author	Chandra X-ray Observatory Center
Source	Chandra X-ray Observatory
Headline	Chandra's extremely deep image provides a crucial view of one of the most intensively studied patches of the night sky
Credit/Provider	NASA/PSU/G.Garmire, N.Brandt, et al.
Short title	Chandra Deep Field-North
Usage terms	http://chandra.harvard.edu/photo/image_use.html
Date and time of data generation	13 March 2001
Orientation	Normal
Exif version	2.21
Color space	Uncalibrated
Date metadata was last modified	09:09, 22 August 2012
Unique ID of original document	396C0917086C119FCFE055A899C761F5
Keywords	Chandra Deep Field-North
Contact information	cxcpub@cfa.harvard.edu http://chandra.harvard.edu 60 Garden St. Cambridge, MA, 02138 USA 617.496.7941
IIM version	4

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