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XMM-Newton Observations

of the FR II Radio-Loud BAL

Quasar FIRST J1016+5209

Justin J. Schaefer, M. S. Brotherton

(University of Wyoming), M. D. Gregg, R.

H. Becker (UC Davis/LLNL), S. A. Laurent-

Muehleisen (UC Davis), M. Lacy (Caltech),

R. L. White (STSCI)

Abstract

We have detected FIRST J101614.3+520916 with the

XMM-Newton X-ray Observatory. FIRST J1016+5209,

one of the most extreme radio-loud broad absorption line

(BAL) quasars so far discovered, is a Fanaroff-Riley type

II (FR II) radio source. We find the X-ray flux is low in

comparison to the radio flux indicating X-ray absorption.

We have measured optical-X-ray spectral indices and X-

ray hardness ratios. FIRST J1016+5209 is relatively X-

ray bright compared to radio-quiet BAL quasars. Despite

the low counts, we have determined that a simple high-

column-density absorber does not match the soft optical-

X-ray spectral index and the HR simultaneously,

requiring a more complex model that includes a partial

covering X-ray absorber.

Introduction

The quasar FIRST J1016+5209 has an optical

spectrum that shows broad absorption features

(Figure 1), and the double-lobed radio

morphology and luminosity characteristic of a

classic FR II radio source (Figure 2). The radio

luminosity places it among the extreme end of

radio-loud quasars (Table 1). Such radio-loud

quasars normally have intrinsically more

luminous X-ray emission compared to radio-

quiet quasars, although BAL quasars in general

are typically very x-ray faint due to absorption

along the line of sight.

X-Ray Observations

• We observed FIRST J1016+5209 with XMM-Newton on

2001 November 3 with a duration of ~10 ks. Due to high

X-ray background flares only 6.1 ks of data from the

EPIC MOS 1 detector and 5.8 ks of data from the EPIC

MOS 2 detector (Figure 3), were usable.

• The x-ray flares overwhelmed the x-ray sensitive EPIC-

pn detector, and no data remained usable.

• This was the first X-ray observation of a FR II BAL

quasar.

• The time-averaged, 0.2-8 keV flux of J1016+5209 is

6.5X10-14 ergs/cm2/s. (Table 2)

• There were too few counts (46) for a detailed spectral

analysis, but the hardness ratio HR (-0.5) indicates an

excess of soft photons. (Table 2)

Conclusion

• Based on the radio-X-ray correlation (Brinkman et al. 2000) we estimate

that the intrinsic X-ray flux is ~17 times larger than observed.

• Assuming the estimated X-ray flux we calculate an intrinsic αox = -1.05 for

this object versus the observed αox = -1.51.

• First J1016+5209 is much fainter optically, but as bright in the X-rays as the

Radio-Quiet BAL Quasars of Green et al. (2001) (all αox < -1.5).

• At 2 keV and Z = 2.454 a NH = 8x1023 cm-2 would be required to account for

the faintness of the X-ray flux. The HR however is consistent only for NH ≤

1x1021.5 cm-2. This implies a more complex situation.

• A longer exposure of J1016+5209 is needed to understand the nature of the

absorber.

• CHANDRA and XMM-Newton observations of the second FR II BAL Quasar

LBQS 1138-0126 (Brotherton et al. 2002) have been taken, and analysis of

the data has begun.

• We estimate for a combined SDSS and FIRST survey search, we will

discover 100-200 FR II BAL Quasars (Brotherton et al. 2002).

References

• Brinkman et al. 2000, A&A, 356, 445-462

• Brinkman et al. 2002, A&A, 385, L31-L35

• Brotherton et al. 2002, AJ, 124, 2575-2580

• Dickey and Lockman, 1990, ARAA, 28, 215

• Gehrels 1986, ApJ, 303, 336

• Green, et al. 2000, ApJ, 558, 109-118

• Gregg, et al. 2000, ApJ, 544, 142-149

Acknowledgements









This work is funded by Wyoming NASA Space Grant Consortium, NASA Grant

#NGT-40102 and by Wyoming NASA EPSCoR NASA Grant #NCC5-578.

This work is also funded in part by NASA through the US XMM-Newton

Program with data provided by ESA.

Table 2: X-ray Properties and

Comparisons

BALQSO NH counts Soft Hard S+H HR FX αOX

cm-2 s-1 total ergs s-1cm-2



J1016+5209 7.64e+19 0.0077 36 10 46 -0.5±.08 6.5e-14 -1.51





Notes: All counts/fluxes have been background subtracted. NH is the Galactic

column density calculated using nH (Dickey and Lockman 1990). Counts are the

total counts from the 0.2-8 keV flux received by the two EPIC MOS detectors. Soft

band is 0.2-2 keV, hard band is 2-8 keV. HR= (H-S)/(H+S), with errors following

Gehrels (1986). FX is 0.2-8 keV flux, assuming a photon index = 1.7 and the

Galactic column. The optical-X-ray spectral index (αOX) is calculated using a

dereddened optical flux at 3000 Å, and a PIMMS conversion of the XMM-Newton

flux to a ROSAT bandpass (0.1-2.4 keV) for the 2 keV flux. Sν α ναox

Figure 3: MOS 2 Image

Figure 3: MOS 2 Image

Figure 1: Optical Spectrum









Low-resolution spectrum of J101614.3+520916 obtained at the Keck Observatory using LRIS. Prominent features are

labeled. There is a relatively strong intervening Mg II 2800 absorption system at an observed wavelength of 6110 Å (z =

1.182). (This caption and plot taken from Gregg et al. 2000.)

Figure 2: Radio Map









Left. FIRST Survey 20 cm image of J101614.3+520916; contour levels are -0.5, 0.5, 1.0, 5, 10.0, 20.0, 50.0, and 100.0

mJy. Right: A-array 3.6 cm image of the northwest lobe showing linear structure pointing directly back to the radio core,

evidence that the two are physically associated and not a chance arrangement of radio sources. Contour levels are

0.24, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.35, 3.75, and 4.0 mJy; the map has an rms of 0.078 mJy. (The radio maps and text

for Figure 1 and Table 1 are from Gregg et al. 2000.)







Table 1: Quasar Properties

BALQSO Z E~R S20 cm Av MB log LR 5 Ghz

Log R*

Mag mJy mag mag ergs/cm2/s/Hz

J1016+5209 2.454 18.6 177 0.75 -26.2(-27.3) 34.3 3.4(2.7)

Note: “( )” indicates dereddened values.



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