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- gamma-ray astronomy40
- gamma-ray bursts[remove]40
- redshifted13
- optical astronomy12
- photometry11
- x-ray sources7
- infrared photometry6
- wide-band photometry5
- radio astronomy4
- sloan photometry3
- spectroscopy3
- astronomical models2
- astronomical reference materials2
- chemical abundances2
- millimeter astronomy2
- polarimetry2
- radio sources2
- submillimeter astronomy2
- supernovae2
- ultraviolet photometry2
