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Related papers: Updating quasar bolometric luminosity corrections

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We present infrared bolometric luminosity corrections derived from the detailed spectral energy distributions of 62 bright quasars of low- to moderate-redshift (z=0.03-1.4). At 1.5, 2, 3, 7, 12, 15, and 24 microns we provide bolometric…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Jessie C. Runnoe , Michael S. Brotherton , Zhaohui Shang

We present quasar bolometric corrections using the [O III] $\lambda5007$ narrow emission line luminosity based on the detailed spectral energy distributions of 53 bright quasars at low to moderate redshift ($0.0345<z<1.0002$). We adopted…

Astrophysics of Galaxies · Physics 2017-04-12 Alison Pennell , Jessie C. Runnoe , Michael Brotherton

Bolometric corrections based on the optical-to-ultraviolet continuum spectrum of quasars are widely used to quantify their radiative output, although such estimates are affected by a myriad of uncertainties, such as the generally unknown…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Rodrigo S. Nemmen , Michael S. Brotherton

We present a new method to calculate bolometric luminosities for unobscured, type 1 quasars with multi-band photometric data. Bolometric luminosity is a fundamental property to understand quasars and it is commonly estimated from…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-01 Jie Chen , Linhua Jiang , Shengxiu Sun , Zijian Zhang , Mouyuan Sun

We present bolometric corrections, as a function of wavelength, for powerful radio-loud quasars from the Revised Third Cambridge Catalogue of Radio Galaxies (3CRR) at 1 < z < 2. The bolometric luminosities are derived by integrating the…

High Energy Astrophysical Phenomena · Physics 2025-10-21 Mojegan Azadi , Belinda Wilkes , Joanna Kuraszkiewicz , Steven. P. Willner , Matthew L. N. Ashby

We explore the mid-infrared (mid-IR) through ultraviolet (UV) spectral energy distributions (SEDs) of 119,652 luminous broad-lined quasars with 0.064<z<5.46 using mid-IR data from Spitzer and WISE, near-infrared data from Two Micron All Sky…

To understand the impact of active galactic nuclei (AGN) on their host galaxies and large scale environment it is crucial to determine their total radiative power across all wavelengths (i.e., bolometric luminosity). In this contribution we…

Astrophysics of Galaxies · Physics 2022-04-28 Mojegan Azadi , Belinda Wilkes , Joanna Kuraszkiewicz , Matthew Ashby , S. P. Willner

In this paper, we provide updated constraints on the bolometric quasar luminosity function (QLF) from $z=0$ to $z=7$. The constraints are based on an observational compilation that includes observations in the rest-frame IR, B band, UV,…

A better understanding of the amplitudes of stellar oscillation modes and surface granulation is essential for improving theories of mode physics and the properties of the outer convection zone of solar-like stars. A proper prediction of…

Solar and Stellar Astrophysics · Physics 2019-07-31 Mikkel N. Lund

Aims: We aim at estimating the spectral energy distributions (SEDs) and the physical parameters related to the black holes harbored in eight high X-ray-to-optical (F_X/F_R>10) obscured quasars at z>0.9 selected in the 2--10 keV band from…

We present bolometric luminosity ($L_{\rm bol}$) and black hole (BH) mass ($M_{\rm BH}$) estimators based on mid-infrared (MIR) continuum luminosity (hereafter, $L_{\rm MIR}$) that are measured from infrared (IR) photometric data. The…

Astrophysics of Galaxies · Physics 2023-10-03 Dohyeong Kim , Myungshin Im , Minjin Kim , Yongjung Kim , Suhyun Shin , Hyunjin Shim , Hyunmi Song

We use public data for 105783 quasars from The Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) that include spectral monochromatic luminosities at 5100\AA, 3000\AA, and 1350\AA, and the corresponding observed broad-band ugriz, VRI…

Astrophysics of Galaxies · Physics 2015-10-30 Szymon Kozłowski

Context. In order to determine stellar luminosities and radii, it is necessary to know the total bolometric fluxes emitted by the stars, or equivalently the bolometric corrections (BCs) as accurately as possible. Aims. The aim of this paper…

Bolometric luminosity is a basic physical parameter that is widely used in the study of blazars. Due to the lack of simultaneous full wavelength data, several estimators of the bolometric luminosity are being used in practice. In this…

High Energy Astrophysical Phenomena · Physics 2017-10-04 Zerui Wang , Rui Xue , Leiming Du , Zhaohua Xie , Dingrong Xiong , Tingfeng Yi , Yunbing Xu , Wenguang Liu

We combine a large set of quasar luminosity function (QLF) measurements from the rest-frame optical, soft and hard X-ray, and near- and mid-infrared bands to determine the bolometric QLF in the redshift interval z=0-6. Accounting for the…

Astrophysics · Physics 2008-11-26 Philip F. Hopkins , Gordon T. Richards , Lars Hernquist

We derive bolometric correction functions for oscillation mode amplitudes observed by the different cameras of the ESA PLATO mission. Such corrections between bolometric (full light) and mission instrument-specific amplitudes enable…

Solar and Stellar Astrophysics · Physics 2026-03-16 Mikkel N. Lund , Jérôme Ballot , William J. Chaplin

X-ray emission from quasars has been detected up to redshift $z=7.5$, although only limited to a few objects at $z>6.5$. In this work, we present new Chandra observations of five $z>6.5$ quasars. By combining with archival Chandra…

We present bolometric luminosities, black hole masses and Eddington ratios for 42 luminous quasars at z>6 using high signal-to-noise ratio VLT/X-Shooter spectra, acquired in the enlarged ESO Large Programme XQR-30. In particular, we derive…

The AGN bolometric correction is a key element to understand BH demographics and compute accurate BH accretion histories from AGN luminosities. However, current estimates still differ from each other by up to a factor of two to three, and…

We perform a spectral analysis of a sample of 11 medium redshift (1.5 < z < 2.2) quasars. Our sample all have optical spectra from the SDSS, infrared spectra from GNIRS and TSPEC, and X-ray spectra from XMM-Newton. We first analyse the…

High Energy Astrophysical Phenomena · Physics 2015-06-23 James S. Collinson , Martin J. Ward , Chris Done , Hermine Landt , Martin Elvis , Jonathan C. McDowell
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