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Lyman Alpha Blobs in a Filament at z=2.38Bright, extended Lyman-alpha nebulae (known as blobs) appear to be common in the densest environments at high redshift, and may be an important stage in galaxy evolution. Up to now, Chandra data have not distinguished between the possible excitation mechanisms, but suggest that we are seeing dense excitation mechanisms, but suggest that we are seeing dense intracluster gas either falling into forming galaxies (cooling flows) or being expelled into the intracluster medium, enriching it. Optical and X-ray evidence also suggests that some blobs harbor AGN. We took a 20 ksec exposure with Chandra of four Lyman-alpha blobs in a large filament at $z=2.38$, which completed the X-ray observations of all currently known blobs. We will present flux constraints for the blobs from the Chandra data and optical spectra of the field taken with the AAT+2dF (see accompanying poster by Woodgate et al.). Possible mechanisms for the extended emission of the Lyman-alpha blobs will be discussed.
Document ID
20040171816
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Williger, G.
(Johns Hopkins Univ. MD, United States)
Francis, P.
(Australian National Univ. Australia)
Mushotzky, R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Palunas, P.
(Texas Univ. TX, United States)
Teplitz, H.
(California Inst. of Tech. Pasadena, CA, United States)
Weaver, K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
White, R.
(Alabama Univ. AL, United States)
Woodgate, B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Astronomy
Meeting Information
Meeting: American Astronomical Society Meeting
Location: Atlanta, GA
Country: United States
Start Date: January 4, 2004
End Date: January 8, 2004
Sponsors: American Astronomical Society
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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