File:X-ray Image of NGC 891 (2002-igm-more-4).tiff

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English

X-ray Image of NGC 891 The Chandra image of NGC 891 shows a few point-like sources due to neutron stars and black holes, and a shadow cast by the galaxy on an otherwise bright background of X-rays.

Summary

Description	English: X-ray Image of NGC 891 The Chandra image of NGC 891 shows a few point-like sources due to neutron stars and black holes, and a shadow cast by the galaxy on an otherwise bright background of X-rays. This shadow is evidence for a source of X-rays beyond the galaxy. These X-rays are thought to come from a vast, distant intergalactic cloud of multimillion degree gas.
Date	31 July 2002 (upload date)
Source	X-ray Image of NGC 891
Author	(Credit: NASA/CXC/U.Mich./J.Bregman & J.Irwin)
Other versions	JPG version

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	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	13:41, 22 November 2024		2,227 × 1,845 (383 KB)	OptimusPrimeBot (talk \| contribs)	#Spacemedia - Upload of https://chandra.si.edu/photo/2002/igm/igm_xray.tif via Commons:Spacemedia

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File:X-ray Image of NGC 891 (2002-igm-more-4).jpg

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Image title	This artistic rendering illustrates how X-rays from a distant quasar dim as they pass through a cloud of the intergalactic gas. Four independent teams of scientists have detected intergalactic gas clouds with temperatures in the range 300,000 to 5 million degrees Celsius by observing quasars with Chandra. The spectrum of the quasar PKS 2155-304 in the inset shows absorption due to oxygen in the hot gas and allows astronomers to estimate the temperature, density and mass of the absorbing cloud. The hot gas appears to lie like a fog in channels carved by rivers of gravity and to form part of a gigantic system of hot gas and dark matter that defines the cosmic landscape. This system is thought to contain more material than all the stars in the universe.
Author	Chandra X-ray Observatory Center
Width	2,227 px
Height	1,845 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

File:X-ray Image of NGC 891 (2002-igm-more-4).tiff

Captions

Captions

Summary

Licensing

File history

File usage on Commons

Metadata

Structured data

Items portrayed in this file

depicts

creator

Chandra X-ray Observatory

copyright status

public domain

location of creation

high Earth orbit

media type

image/tiff

height

1,845 pixel

width

2,227 pixel

fabrication method

satellite imagery

instance of

photograph

data size

391,894 byte

checksum

6ec5226029e35f0c5e10cd290515004f3e743506

inception

31 July 2002

source of file

file available on the internet

pHash checksum

17sby3nn5ff8asr2by1ou2sbaoaj8cc508v47wqvuztb8su1gv