Scientists discovered this history of black hole eruptions by studying NGC 5813, a group of galaxies about 105 million light years from Earth. These Chandra observations are the longest ever obtained of a galaxy group, lasting for just over a week.

This Chandra image shows a close-up of the middle of NGC 5813. The pair of small, central cavities are more easily visible here than in the composite image with a larger field-of-view. A second pair of cavities is also visible.

This composite image shows an intergalactic "weather map" around the elliptical galaxy NGC 5813, the dominant central galaxy in a galaxy group located about 105 million light years away from Earth. Just like a weather map for a local forecast on Earth, the colored circle depicts variations in temperature across a region.

NGC 5813 is a Elliptical Galaxy in the Virgo constellation. NGC 5813 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.

2015年3月27日 · We present results from a very deep (650 ks) Chandra X-ray observation of the galaxy group NGC~5813, the deepest Chandra observation of a galaxy group to date. Earlier observations showed two pairs of cavities distributed roughly collinearly, with each pair associated with an elliptical shock front.

2015年4月29日 · We use recent X-ray observations of the intracluster medium (ICM) of the galaxy group NGC 5813 to confront theoretical studies of ICM thermal evolution with the newly derived ICM properties.

2011年1月24日 · We present results from Chandra observations of NGC 5813, the dominant central galaxy in a nearby galaxy group. We focus on three main results. 1) The diffuse gas shows clear signatures from three...

2015年5月27日 · We present results from a very deep (650 ks) Chandra X-ray observation of the galaxy group NGC 5813, the deepest Chandra observation of a galaxy group to date. This system uniquely shows three pairs of collinear cavities, with each pair associated with an unambiguous active galactic nucleus (AGN) outburst shock front.

2010年12月17日 · We present results from new Chandra, GMRT, and SOAR observations of NGC 5813, the dominant central galaxy in a nearby galaxy group. The system shows three pairs of collinear cavities at 1 kpc, 8 kpc, and 20 kpc from the central source, from three distinct outbursts of the central active galactic nucleus (AGN), which occurred 3 × 10 6 , 2 × 10 ...

< NGC List NGC 5813. NGC 5813 is a elliptical galaxy located in the constellation of Virgo. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 5813: