PKS 1954-388 multiwavelength SED

Also known as 1FGL J1958.4-3847, 1FLAT J195759.8-384506, 1Jy 1954-388, 2FGL J1958.2-3848, 3FGL J1958.0-3847, 5BZQ J1957-3845, BZQ J1957-3845, CRATES J195759-384514, PKS B1954-388, PMN J1957-3845, WMAP3, WMAP5 J1958-3845.

• Class: FSRQ
• Redshift: z = 0.625
• Position (ICRS): RA 299.49925°, Dec −38.75177°
• Data: 3,184 points (5 upper limits) from 40 catalogues
• Dated data: 2007–2025 (MJD 54278–60822)
• Undated catalogue values: 668
• 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: 88 UVOT and 76 XRT
• Largest catalogues (points): ASAS-SN (1,838), MMDCGR (367), SMARTS (245), SUFST (140), PACO (132)

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=299.49925, dec=-38.75177, name="PKS 1954-388")

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

Other FSRQs

• PKS 2021-330
• PKS B1921-293
• PKS 2052-47
• PKS 2123-463
• TXS 1920-211
• PKS 1958-179

How to cite

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