MS 2143.4+0704 multiwavelength SED

Also known as 1FLAT J214552.3+071927, 1OUNYU J214552+0719.4, 1WHSP J214552.2+071927, 2WHSP J214552.1+071927, 3FGL J2145.7+0717, 3HSP J214552.3+071927, 5BZB J2145+0719, BZB J2145+0719, CRATES J214552+071919, MS 21434+0704.

• Class: BL Lac
• Redshift: z = 0.237
• Position (ICRS): RA 326.46792°, Dec 7.32423°
• Data: 2,610 points (22 upper limits) from 34 catalogues
• Dated data: 2010–2024 (MJD 55337–60609)
• Undated catalogue values: 93
• 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: 50 UVOT and 22 XRT
• Largest catalogues (points): ZTF (1,440), NEOWISE (582), ASAS-SN (262), PanSTARRS-LC (87), WISEME (68)

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=326.46792, dec=7.32423, name="MS 2143.4+0704")

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

Other BL Lac objects

• 87GB 214302.1+095227
• PKS 2131-021
• TXS 2147-144
• 4C +16.67
• TXS 2056-149
• B2 2125+35

How to cite

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