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

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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	JPG 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

This media is a product of the
Chandra X-ray Observatory
Credit and attribution belongs to the Chandra X-ray Center, NASA/SAO/Penn State University/MIT

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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
Width	1,942 px
Height	1,980 px
Bits per component	8 8 8
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	3
Number of rows per strip	1
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Data arrangement	chunky format
Exif version	2.21
Color space	Uncalibrated

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

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