1ES 1421+582 multiwavelength SED

Also known as 1FGL J1422.2+5757, 1OUNYU J142239+5801.8, 2WHSP J142238.8+580154, 3FGL J1422.8+5801, 3HSP J142238.9+580156, 5BZB J1422+5801, BZB J1422+5801, RBS1383, ROXA J142238.8+580155.4, RX J14226+5801, RXS J14226+5801, SDSS J142238.89+580155.5, SHBL J142239.0+580155.

• Class: BL Lac
• Redshift: z = 0.636
• Position (ICRS): RA 215.66201°, Dec 58.03209°
• Data: 5,150 points (182 upper limits) from 31 catalogues
• Dated data: 2010–2024 (MJD 55288–60526)
• Undated catalogue values: 69
• Frequency range of detections: log ν = 8.2–25.4 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 114 UVOT and 239 XRT
• Largest catalogues (points): ZTF (2,899), NEOWISE (1,234), MMDCXRT (355), WISEME (292), ASAS-SN (125)

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=215.66201, dec=58.03209, name="1ES 1421+582")

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

Other BL Lac objects

• MS 1407.9+5954
• RBS 1409
• OQ 530
• SBS 1339+554
• SBS 1508+561
• 1H 1515+660

How to cite

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