1H 1515+660 multiwavelength SED

Also known as 1FGL J1517.8+6530, 1FLAT J151747.6+652523, 1OUNYU J151748+6525.3, 1RXS J151747.3+652522, 2FGL J1518.0+6526, 2FHL J1517.7+6526, 2WHSP J151747.5+652523, 3FGL J1517.6+6524, 3HSP J151747.6+652523, 5BZB J1517+6525, BZB J1517+6525, H 1517+656, SHBL J151747.4+652523.

• Class: BL Lac
• Redshift: z = 0.702
• Position (ICRS): RA 229.44828°, Dec 65.42313°
• Data: 8,735 points (39 upper limits) from 36 catalogues
• Dated data: 1997–2024 (MJD 50512–60576)
• Undated catalogue values: 93
• Frequency range of detections: log ν = 8.5–25.4 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 582 UVOT and 450 XRT
• Largest catalogues (points): ZTF (3,040), NEOWISE (1,521), XRTSPEC (1,040), MMDCXRT (1,006), ASAS-SN (732)

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=229.44828, dec=65.42313, name="1H 1515+660")

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

Other BL Lac objects

• SBS 1508+561
• MS 1407.9+5954
• 1ES 1421+582
• RBS 1409
• 1ES 1533+535
• RBS 1555

How to cite

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