4C +47.44 multiwavelength SED

Also known as 1FGL J1637.9+4707, 1OUNYU J163745+4717.5, 3FGL J1637.7+4715, 4C47.44, 5BZQ J1637+4717, BZQ J1637+4717, CRATES J163744+471739, JVASJ1637+4717, S41636+473, WMAP5 J1637+4713.

• Class: FSRQ
• Redshift: z = 0.735
• Position (ICRS): RA 249.43804°, Dec 47.29273°
• Data: 6,014 points (25 upper limits) from 39 catalogues
• Dated data: 2008–2024 (MJD 54704–60609)
• Undated catalogue values: 103
• Frequency range of detections: log ν = 7.9–25.5 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 22 UVOT and 14 XRT
• Largest catalogues (points): ZTF (4,089), NEOWISE (1,385), WISEME (168), MMDCGR (101), PanSTARRS-LC (81)

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=249.43804, dec=47.29273, name="4C +47.44")

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

Other FSRQs

• TXS 1629+495
• B3 1708+433
• 3C 345
• S4 1726+45
• B2 1606+40
• 4C +38.41

How to cite

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