S4 1849+67 multiwavelength SED

Also known as 1FGL J1849.3+6705, 1FLAT J184916.1+670541, 1OUNYU J184916+6705.6, 2FGL J1849.4+6706, 3FGL J1849.2+6705, 5BZQ J1849+6705, BZQ J1849+6705, CRATES J184917+670548, S41849+670, WMAP5 J1849+6705, WMAP65.

• Class: FSRQ
• Redshift: z = 0.646
• Position (ICRS): RA 282.31697°, Dec 67.09491°
• Data: 3,707 points (5 upper limits) from 28 catalogues
• Dated data: 2006–2025 (MJD 54055–60951)
• Undated catalogue values: 81
• Frequency range of detections: log ν = 7.6–25.4 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 78 UVOT and 65 XRT
• Largest catalogues (points): ZTF (2,813), ASAS-SN (228), WISEME (160), PanSTARRS-LC (105), MMDCXRT_ORBIT (76)

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=282.31697, dec=67.09491, name="S4 1849+67")

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

Other FSRQs

• S4 1842+68
• TXS 1933+655
• 87GB 200541.3+641601
• S4 1716+68
• TXS 1700+685
• TXS 1645+635

How to cite

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