Nustar detection of the blazar B2 1023+25 at redshift 5.3

T. Sbarrato; G. Tagliaferri; G. Ghisellini; M. Perri; S. Puccetti; M. Balokovic´; M. Nardini; D. Stern; S. E. Boggs; W. N. Brandt; Finn Erland Christensen; P. Giommi; J. Greiner; C. J. Hailey; F. A. Harrison; T. Hovatta; G. M. Madejski; A. Rau; P. Schady; V. Sudilovsky; C. M. Urry; W. W. Zhang

doi:10.1088/0004-637X/777/2/147

Nustar detection of the blazar B2 1023+25 at redshift 5.3

T. Sbarrato, G. Tagliaferri, G. Ghisellini, M. Perri, S. Puccetti, M. Balokovic´, M. Nardini, D. Stern, S. E. Boggs, W. N. Brandt, Finn Erland Christensen, P. Giommi, J. Greiner, C. J. Hailey, F. A. Harrison, T. Hovatta, G. M. Madejski, A. Rau, P. Schady, V. SudilovskyC. M. Urry, W. W. Zhang

Research output: Contribution to journal › Journal article › Research › peer-review

329 Downloads (Pure)

Abstract

B2 1023+25 is an extremely radio-loud quasar at z = 5.3 that was first identified as a likely high-redshift blazar candidate in the SDSS+FIRST quasar catalog. Here, we use the Nuclear Spectroscopic Telescope Array (NuSTAR) to investigate its non-thermal jet emission, whose high-energy component we detected in the hard X-ray energy band. The X-ray flux is ~5.5 × 10-14 erg cm-2 s-1 (5-10 keV) and the photon spectral index is ΓX ≃ 1.3-1.6. Modeling the full spectral energy distribution, we find that the jet is oriented close to the line of sight, with a viewing angle of ~3°, and has significant Doppler boosting, with a large bulk Lorentz factor ~13, which confirms the identification of B2 1023+25 as a blazar. B2 1023+25 is the first object at redshift larger than 5 detected by NuSTAR, demonstrating the ability of NuSTAR to investigate the early X-ray universe and to study extremely active supermassive black holes located at very high redshift.

Original language	English
Article number	147
Journal	Astrophysical Journal
Volume	777
Issue number	2
Number of pages	8
ISSN	0004-637X
DOIs	https://doi.org/10.1088/0004-637X/777/2/147
Publication status	Published - 2013

Access to Document

10.1088/0004-637X/777/2/147

0004 637X 777 2 147Final published version, 360 KB

http://iopscience.iop.org/0004-637X/777/2/147

OpenUrl availability

Full text

Cite this

Sbarrato, T., Tagliaferri, G., Ghisellini, G., Perri, M., Puccetti, S., Balokovic´, M., Nardini, M., Stern, D., Boggs, S. E., Brandt, W. N., Christensen, F. E., Giommi, P., Greiner, J., Hailey, C. J., Harrison, F. A., Hovatta, T., Madejski, G. M., Rau, A., Schady, P., ... Zhang, W. W. (2013). Nustar detection of the blazar B2 1023+25 at redshift 5.3. Astrophysical Journal, 777(2), Article 147. https://doi.org/10.1088/0004-637X/777/2/147

@article{b0ae7e467c9d44fdaafab3c255155fe4,

title = "Nustar detection of the blazar B2 1023+25 at redshift 5.3",

abstract = "B2 1023+25 is an extremely radio-loud quasar at z = 5.3 that was first identified as a likely high-redshift blazar candidate in the SDSS+FIRST quasar catalog. Here, we use the Nuclear Spectroscopic Telescope Array (NuSTAR) to investigate its non-thermal jet emission, whose high-energy component we detected in the hard X-ray energy band. The X-ray flux is ~5.5 × 10-14 erg cm-2 s-1 (5-10 keV) and the photon spectral index is ΓX ≃ 1.3-1.6. Modeling the full spectral energy distribution, we find that the jet is oriented close to the line of sight, with a viewing angle of ~3°, and has significant Doppler boosting, with a large bulk Lorentz factor ~13, which confirms the identification of B2 1023+25 as a blazar. B2 1023+25 is the first object at redshift larger than 5 detected by NuSTAR, demonstrating the ability of NuSTAR to investigate the early X-ray universe and to study extremely active supermassive black holes located at very high redshift.",

author = "T. Sbarrato and G. Tagliaferri and G. Ghisellini and M. Perri and S. Puccetti and M. Balokovic´ and M. Nardini and D. Stern and Boggs, {S. E.} and Brandt, {W. N.} and Christensen, {Finn Erland} and P. Giommi and J. Greiner and Hailey, {C. J.} and Harrison, {F. A.} and T. Hovatta and Madejski, {G. M.} and A. Rau and P. Schady and V. Sudilovsky and Urry, {C. M.} and Zhang, {W. W.}",

year = "2013",

doi = "10.1088/0004-637X/777/2/147",

language = "English",

volume = "777",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Sbarrato, T, Tagliaferri, G, Ghisellini, G, Perri, M, Puccetti, S, Balokovic´, M, Nardini, M, Stern, D, Boggs, SE, Brandt, WN, Christensen, FE, Giommi, P, Greiner, J, Hailey, CJ, Harrison, FA, Hovatta, T, Madejski, GM, Rau, A, Schady, P, Sudilovsky, V, Urry, CM & Zhang, WW 2013, 'Nustar detection of the blazar B2 1023+25 at redshift 5.3', Astrophysical Journal, vol. 777, no. 2, 147. https://doi.org/10.1088/0004-637X/777/2/147

TY - JOUR

T1 - Nustar detection of the blazar B2 1023+25 at redshift 5.3

AU - Sbarrato, T.

AU - Tagliaferri, G.

AU - Ghisellini, G.

AU - Perri, M.

AU - Puccetti, S.

AU - Balokovic´, M.

AU - Nardini, M.

AU - Stern, D.

AU - Boggs, S. E.

AU - Brandt, W. N.

AU - Christensen, Finn Erland

AU - Giommi, P.

AU - Greiner, J.

AU - Hailey, C. J.

AU - Harrison, F. A.

AU - Hovatta, T.

AU - Madejski, G. M.

AU - Rau, A.

AU - Schady, P.

AU - Sudilovsky, V.

AU - Urry, C. M.

AU - Zhang, W. W.

PY - 2013

Y1 - 2013

N2 - B2 1023+25 is an extremely radio-loud quasar at z = 5.3 that was first identified as a likely high-redshift blazar candidate in the SDSS+FIRST quasar catalog. Here, we use the Nuclear Spectroscopic Telescope Array (NuSTAR) to investigate its non-thermal jet emission, whose high-energy component we detected in the hard X-ray energy band. The X-ray flux is ~5.5 × 10-14 erg cm-2 s-1 (5-10 keV) and the photon spectral index is ΓX ≃ 1.3-1.6. Modeling the full spectral energy distribution, we find that the jet is oriented close to the line of sight, with a viewing angle of ~3°, and has significant Doppler boosting, with a large bulk Lorentz factor ~13, which confirms the identification of B2 1023+25 as a blazar. B2 1023+25 is the first object at redshift larger than 5 detected by NuSTAR, demonstrating the ability of NuSTAR to investigate the early X-ray universe and to study extremely active supermassive black holes located at very high redshift.

AB - B2 1023+25 is an extremely radio-loud quasar at z = 5.3 that was first identified as a likely high-redshift blazar candidate in the SDSS+FIRST quasar catalog. Here, we use the Nuclear Spectroscopic Telescope Array (NuSTAR) to investigate its non-thermal jet emission, whose high-energy component we detected in the hard X-ray energy band. The X-ray flux is ~5.5 × 10-14 erg cm-2 s-1 (5-10 keV) and the photon spectral index is ΓX ≃ 1.3-1.6. Modeling the full spectral energy distribution, we find that the jet is oriented close to the line of sight, with a viewing angle of ~3°, and has significant Doppler boosting, with a large bulk Lorentz factor ~13, which confirms the identification of B2 1023+25 as a blazar. B2 1023+25 is the first object at redshift larger than 5 detected by NuSTAR, demonstrating the ability of NuSTAR to investigate the early X-ray universe and to study extremely active supermassive black holes located at very high redshift.

U2 - 10.1088/0004-637X/777/2/147

DO - 10.1088/0004-637X/777/2/147

M3 - Journal article

SN - 0004-637X

VL - 777

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 147

ER -

Nustar detection of the blazar B2 1023+25 at redshift 5.3

Abstract

Access to Document

OpenUrl availability

Fingerprint

Cite this