1ES 1218+304

Note: The NLSy1 Mkn 766 (2-10 keV flux typically 2-6 × 10−11 erg cm−2 s−1) lies 0.73 degrees away, at (α = 12 18 26.51, δ = +29 48 46.3). Given the FWHM ∼ 1 degree angular response of the PCA, Mkn 766 may potentially contribute >∼4 × 10−12 erg cm−2 s−1 (30-50%) of contaminating emission to the measured flux/spectrum of 1ES 1218+304. The blazar RGB J1217+301 (ON 325) lies about 0.76 degrees away, at (α = 12 17 52.1, δ= +30 07 01). Its 2-10 keV flux, following references on NED, is usually 6-10 × 10−13 erg cm−2 s−1 and so the level of contamination to the measured flux/spectrum of 1ES 1218+304 is likely only ∼2 × 10−13 erg cm−2 s−1.

Light curves:

Fluxes (ASCII): F(2-10) F(2-4) F(4-7) F(7-10)

1ES1218+304


Spectral Files:


Data Model
Good Exposure Times:
PCA: 10 ks
recorn*constant*powerlaw
Γ = 2.53 ± 0.20
A1 = 1.00+0.17−0.45 × 10−2 ph cm−2 s−1 keV−1

Average 2-10 keV flux: 1.2 × 10−11 erg cm−2 s−1
Click HERE to download a tar.gz file with PCA data and response.


RXTE AGN Refereed Publications: