4C +55.17 multiwavelength SED

Also known as 1FGL J0957.7+5523, 1Jy 0954+556, 1OUNYU J095738+5522.9, 2FGL J0957.7+5522, 2FHL J0957.6+5523, 3FGL J0957.6+5523, 4C55.17, 5BZQ J0957+5522, BZQ J0957+5522, CRATES J095736+552258, QSO B0954+556, ROXA J095738.1+552257.6, S40954+556, TXS 0954+556, WMAP5 J0957+5527.

• Class: FSRQ
• Redshift: z = 0.896
• Position (ICRS): RA 149.40910°, Dec 55.38271°
• Data: 3,602 points (12 upper limits) from 44 catalogues
• Dated data: 2008–2024 (MJD 54686–60452)
• Undated catalogue values: 144
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Largest catalogues (points): ZTF (1,933), NEOWISE (660), ASAS-SN (545), WISEME (91), PanSTARRS-LC (88)

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=149.4091, dec=55.38271, name="4C +55.17")

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

Other FSRQs

• TXS 1028+605
• S4 1030+61
• OK 492
• OK 630
• S4 0917+44
• 4C +40.24

How to cite

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