H 2356-309 multiwavelength SED

Also known as 1FLAT J235907.9-303740, 1H2354-315.A, 1RXS J235908.0-303740, 2WHSP J235907.8-303740, 3FGL J2359.3-3038, 3HSP J235907.9-303741, 5BZB J2359-3037, BZB J2359-3037, ROXA J235907.8-303741.3, SHBL J235907.9-303739.

• Class: BL Lac
• Redshift: z = 0.165
• Position (ICRS): RA 359.78293°, Dec −30.62797°
• Data: 2,187 points (16 upper limits) from 28 catalogues
• Dated data: 1998–2024 (MJD 50985–60468)
• Undated catalogue values: 137
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 184 UVOT
• Largest catalogues (points): ASAS-SN (1,210), NEOWISE (594), WISEME (86), MMDCOUV (63), 4XMM-DR13 (60)

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=359.78293, dec=-30.62797, name="H 2356-309")

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

Other BL Lac objects

• TXS 2356-210
• RBS 0030
• KUV 00311-1938
• PKS 2240-260
• PKS 0003-066
• TXS 0053-098

How to cite

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