卡死偷电
发表于 2025-3-28 18:34:06
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吵闹
发表于 2025-3-28 21:04:15
Observations of the Seyfert Galaxy MRK 279than 10,000 s. The spectrum is characterized by several features between 80 and 100 Å. We compare the observed data with several models. We can rule out the possibility that the EUV emission is from a diffuse corona or intercloud medium. Models that assume the soft X-ray/EUV emission results from re
DEAWL
发表于 2025-3-29 00:40:51
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草本植物
发表于 2025-3-29 05:31:09
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眼界
发表于 2025-3-29 10:46:51
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健壮
发表于 2025-3-29 14:47:08
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艰苦地移动
发表于 2025-3-29 18:14:21
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亚当心理阴影
发表于 2025-3-29 20:35:24
s deemed to be the `unobservableultraviolet‘. Pioneering results from an EUV telescope on theApollo-Soyuz Mission in 1975 forcibly demonstrated that thisview was incorrect; but it required the all-sky surveys of the EnglishWide-Field Camera and the Extreme Ultraviolet Explorer to demonstratethe broa
NOMAD
发表于 2025-3-30 03:14:56
Making Flash Not Look Like Flash, objects, have already been identified, and spectroscopic measurements of several of them have yielded a number of surprises. However, more observations are clearly needed to confirm some of the reported spectral features and to validate their interpretation.
激怒某人
发表于 2025-3-30 07:01:38
Custom Components and Library Packages, region. A fit to a thermal plasma yields a temperature of 6 × 10. K. The line emission can be attributed to the warm absorbing material discovered before from oxygen and iron absorption features, which appears to be an optically thin (for the Lyman continuum), highly ionized phase of the broad-line region.