1ES 0647+250 multiwavelength SED

Also known as 1FGL J0650.7+2503, 1OUNYU J065046+2502.9, 2FGL J0650.7+2505, 2FHL J0650.7+2502, 2WHSP J065046.3+250258, 3FGL J0650.7+2503, 3HSP J065046.5+250360, 5BZB J0650+2502, BZB J0650+2503, CRATES J065047+250304, MG2 J065043+2503.

• Class: BL Lac
• Redshift: z = 0.203
• Position (ICRS): RA 102.69371°, Dec 25.04990°
• Data: 10,509 points (9 upper limits) from 38 catalogues
• Dated data: 2009–2024 (MJD 55173–60653)
• Undated catalogue values: 104
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 1,076 UVOT and 1,430 XRT
• Largest catalogues (points): ZTF (3,051), MMDCXRT (2,493), XRTSPEC (1,789), ASAS-SN (970), MMDCOUV (917)

Get the data

• The SED as CSV from the MMDC SED API (docs.mmdc.am).
• In Python, with astro-mmdc:

  from astro_mmdc import MMDC
  sed = MMDC().sed.get(ra=102.69371, dec=25.0499, name="1ES 0647+250")

• The interactive SED plot, with time filtering and modeling (needs JavaScript).

Other BL Lac objects

• PKS 0735+17
• B2 0806+35
• PKS 0754+100
• S4 0707+47
• TXS 0826+180
• B3 0824+420

How to cite

Sahakyan, N., Vardanyan, V., Giommi, P., et al. 2024, AJ, 168, 289, doi:10.3847/1538-3881/ad8231 (arXiv:2410.01207).