093439
收藏DataCite Commons2026-03-09 更新2026-05-03 收录
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http://esdcdoi.esac.esa.int/doi/html/data/astronomy/xmm-newton/093439.html
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We propose to monitor 1ES 2344+514 to better understand its intermittent extremestates. 1ES 2344+514 is a nearby BL Lac type object known for behaving as anextremely high-frequency peaked BL Lac object (EHBL) occasionally. During anX-ray flare in 1996 a shift of the synchrotron peak to frequencies above3*10**18 Hz was reported suggesting that the EHBL nature is correlated with theflux level. Still the small number of published MWL observations does not allowfor a coherent picture. In fact thanks to recent X-ray observations weorganized in 2020 we reveal an EHBL behaviour during low activity while wealso found strong flaring periods without EHBL characteristics. [truncated! Please see actual data for full text]
提供机构：
European Space Agency
创建时间：
2026-03-09
