PKS 1424+240 multiwavelength SED

Names and position

Also known as 1FGL J1426.9+2347, 1FLAT J142700.4+234800, 1OUNYU J142700+2347.9, 2FGL J1427.0+2347, 2FHL J1427.0+2348, 2WHSP J142700.3+234800, 3FGL J1427.0+2347, 5BZB J1427+2348, 7C1424+2401, BZB J1427+2348, CRATES J142700+234802, PG 1424+240, PKS B1424+240, QSO B1424+240, ROXA J142651.4+363853.0, TXS 1424+240.

• Class: BL Lac
• Position (ICRS): RA 216.75163°, Dec 23.80001°
• Galactic: l 29.487°, b 68.208°

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

The SED

• Data: 5,840 points (3 upper limits) from 46 catalogues
• Dated data: 2008–2025 (MJD 54690–60871)
• Undated catalogue values: 718
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 936 UVOT and 589 XRT
• Largest catalogues (points): ZTF (1,860), ASAS-SN (1,065), MMDCXRT_ORBIT (575), SUFST (515), MMDCXRT (492)

Data by band

All 7 bands have data. The infrared band has the most points, 2,101 of 5,840; its largest catalogue is ZTF with 1,860.

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=216.75163, dec=23.80001, name="PKS 1424+240")

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

Nearby sources

• PKS B1434+235, 2.3° away
• 1E 1415.6+2557, 2.8° away
• PKS 1441+25, 4.0° away
• OQ 253, 4.3° away

Other BL Lac objects

• 4C +16.39
• RBS 1467
• 87GB 141615.9+355650
• 1ES 1440+122
• TXS 1422+373
• PG 1437+398

How to cite

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