PKS 2223+21 multiwavelength SED

Also known as 1FLAT J222538.1+211806, 1Jy 2223+210, 1OUNYU J222538+2118.1, 5BZQ J2225+2118, BZQ J2225+2118, CRATES J222537+211817, JVASJ2225+2118, PKS 2223+210, PKS B2223+210, Q2223+210, TXS 2223+210.

• Class: FSRQ
• Redshift: z = 1.959
• Position (ICRS): RA 336.40853°, Dec 21.30178°
• Data: 5,451 points (11 upper limits) from 40 catalogues
• Dated data: 1997–2024 (MJD 50764–60489)
• Undated catalogue values: 95
• Frequency range of detections: log ν = 7.9–25.4 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 64 UVOT and 42 XRT
• Largest catalogues (points): ZTF (2,728), ASAS-SN (1,738), NEOWISE (608), WISEME (84), MMDCXRT (75)

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=336.40853, dec=21.30178, name="PKS 2223+21")

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

Other FSRQs

• PKS 2246+208
• PKS 2201+171
• B2 2234+28A
• 3C 454.3
• CTA 102
• OX 169

How to cite

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