3C 446 multiwavelength SED

Also known as 1FGL J2225.8-0457, 1FLAT J222547.3-045701, 1Jy 2223-052, 1OUNYU J222547-0457.0, 2E 2223.1-0512, 2FGL J2225.6-0454, 3FGL J2225.8-0454, 5BZQ J2225-0457, BZQ J2225-0457, CRATES J222546-045700, PKS 2223-052, PKS B2223-052, WMAP29, WMAP5 J2225-0455.

• Class: FSRQ
• Redshift: z = 1.404
• Position (ICRS): RA 336.44691°, Dec −4.95039°
• Data: 2,610 points (8 upper limits) from 51 catalogues
• Dated data: 1997–2025 (MJD 50762–60969)
• Undated catalogue values: 655
• Frequency range of detections: log ν = 7.3–24.9 [Hz] (radio, microwave, infrared, optical, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 38 UVOT and 55 XRT
• Largest catalogues (points): ZTF (1,414), SMARTS (183), PACO (180), WISEME (124), ASAS-SN (122)

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=336.44691, dec=-4.95039, name="3C 446")

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

Other FSRQs

• PKS 2216-03
• PKS 2227-08
• PKS B2224+006
• PKS 2243-123
• OX 057
• PKS 2143-156

How to cite

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