4C +25.01 multiwavelength SED

Also known as 1FLAT J001939.8+260253, 1OUNYU J001940+2602.8, 4C25.01, 5BZQ J0019+2602, BZQ J0019+2602, CRATES J001939+260248.

• Class: FSRQ
• Redshift: z = 0.284
• Position (ICRS): RA 4.91575°, Dec 26.04789°
• Data: 2,627 points (4 upper limits) from 30 catalogues
• Dated data: 2006–2024 (MJD 53768–60499)
• Undated catalogue values: 83
• 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: 36 UVOT and 23 XRT
• Largest catalogues (points): ASAS-SN (1,026), ZTF (716), NEOWISE (596), WISEME (72), MMDCXRT (53)

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=4.91575, dec=26.04789, name="4C +25.01")

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

Other FSRQs

• S4 0003+38
• 4C +27.50
• 4C +31.03
• B2 2308+34
• 4C +10.73
• PKS 0119+11

How to cite

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