PKS 2155-304 multiwavelength SED

Names and position

Also known as 1FGL J2158.8-3013, 1FLAT J215852.0-301331, 1OUNYU J215852-3013.5, 2FGL J2158.8-3013, 2FHL J2158.8-3013, 2WHSP J215852.0-301332, 3FGL J2158.8-3013, 3HSP J215852.1-301332, 5BZB J2158-3013, BZB J2158-3013, CRATES J215852-301328, PKS J2158-3013, SHBL J215852.0-301331.

• Class: BL Lac
• Redshift: z = 0.116
• Position (ICRS): RA 329.71694°, Dec −30.22559°
• Galactic: l 17.730°, b −52.246°

Other names and measurements: NED and SIMBAD within 5″ of this position.

The SED

• Data: 16,639 points (36 upper limits) from 49 catalogues
• Dated data: 1996–2026 (MJD 50407–61294)
• Undated catalogue values: 127
• Frequency range of detections: log ν = 7.9–26.4 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 4,010 UVOT and 4,252 XRT
• Largest catalogues (points): MMDCXRT_ORBIT (5,992), MMDCXRT (3,889), SMARTS (2,083), MMDCOUV (2,005), MMDCNuX (758)

Data by band

All 7 bands have data. The X-ray band has the most points, 10,897 of 16,639; its largest catalogue is MMDCXRT_ORBIT with 5,992.

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=329.71694, dec=-30.22559, name="PKS 2155-304")

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

See an AstroGenesis answer about PKS 2155-304

Nearby sources

• PKS 2149-306, 1.5° away
• PKS 2240-260, 10.8° away
• PKS 2255-282, 13.1° away
• PKS 2143-156, 15.1° away

Other BL Lac objects

• TXS 2147-144
• TXS 2056-149
• H 2356-309
• PKS 2005-489
• TXS 2356-210
• PKS 2131-021

How to cite

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