PKS 2240-260 multiwavelength SED

Also known as 1FLAT J224326.4-254430, 2FGL J2243.2-2540, 3FGL J2243.4-2541, 5BZB J2243-2544, BZB J2243-2544, TXS 2240-260.

• Class: BL Lac
• Redshift: z = 0.774
• Position (ICRS): RA 340.86004°, Dec −25.74186°
• Data: 2,084 points (4 upper limits) from 38 catalogues
• Dated data: 2008–2025 (MJD 54727–60969)
• Undated catalogue values: 196
• 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: 24 UVOT and 2 XRT
• Largest catalogues (points): ASAS-SN (995), ZTF (573), WISEME (148), PanSTARRS-LC (80), SMARTS (70)

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=340.86004, dec=-25.74186, name="PKS 2240-260")

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

Other BL Lac objects

• PKS 2155-304
• TXS 2147-144
• H 2356-309
• TXS 2356-210
• RBS 0030
• KUV 00311-1938

How to cite

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