PKS 0548-322 multiwavelength SED

Also known as 1FLAT J055040.6-321616, 1OUNYU J055040-3216.2, 2E 0548.8-3217, 2WHSP J055040.5-321615, 3FGL J0550.6-3217, 3HSP J055040.6-321616, 5BZG J0550-3216, QSO B0548-322.

• Class: BL Lac
• Redshift: z = 0.069
• Position (ICRS): RA 87.66904°, Dec −32.27125°
• Data: 9,621 points (20 upper limits) from 39 catalogues
• Dated data: 1999–2025 (MJD 51229–60944)
• Undated catalogue values: 153
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, microwave, infrared, optical, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 238 UVOT and 1,218 XRT
• Largest catalogues (points): ASAS-SN (4,371), MMDCXRT_ORBIT (3,433), MMDCXRT (1,123), OUSXB (200), MMDCOUV (119)

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=87.66904, dec=-32.27125, name="PKS 0548-322")

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

Other BL Lac objects

• PKS 0537-441
• TXS 0628-240
• 1ES 0602-482
• PKS 0447-439
• PKS 0426-380
• RBS 0589

How to cite

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