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7 results on '"Boulderstone, B"'

1. Multi-wavelength Optical and NIR Variability Analysis of the Blazar PKS 0027-426

Author

Guise, E., Hönig, S. F., Almeyda, T., Horne, K., Kishimoto, M., Aguena, M., Allam, S., Andrade-Oliveira, F., Asorey, J., Banerji, M., Bertin, E., Boulderstone, B., Brooks, D., Burke, D. L., Rosell, A. Carnero, Carollo, D., Kind, M. Carrasco, Carretero, J., Costanzi, M., da Costa, L. N., Davis, T. M., De Vicente, J., Doel, P., Everett, S., Ferrero, I., Flaugher, B., Frieman, J., Gandhi, P., Goad, M., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., James, D. J., Johnson, M. A. C., Kuehn, K., Lewis, G. F., Lidman, C., Lima, M., Maia, M. A. G., Malik, U., Menanteau, F., Miquel, R., Morgan, R., Ogando, R. L. C., Palmese, A., Paz-Chinchón, F., Pereira, M. E. S., Pieres, A., Malagón, A. A. Plazas, Sanchez, E., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Seymour, N., Smith, M., Soares-Santos, M., Suchyta, E., Swanson, M. E. C., Tarle, G., To, C., and Tucker, B. E.

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present multi-wavelength spectral and temporal variability analysis of PKS 0027-426 using optical griz observations from DES (Dark Energy Survey) between 2013-2018 and VOILETTE (VEILS Optical Light curves of Extragalactic TransienT Events) between 2018-2019 and near infrared (NIR) JKs observations from VEILS (VISTAExtragalactic Infrared Legacy Survey) between 2017-2019. Multiple methods of cross-correlation of each combination of light curve provides measurements of possible lags between optical-optical, optical-NIR, and NIR-NIR emission, for each observation season and for the entire observational period. Inter-band time lag measurements consistently suggest either simultaneous emission or delays between emission regions on timescales smaller than the cadences of observations. The colour-magnitude relation between each combination of filters was also studied to determine the spectral behaviour of PKS 0027-426. Our results demonstrate complex colour behaviour that changes between bluer when brighter (BWB), stable when brighter (SWB) and redder when brighter (RWB) trends over different timescales and using different combinations of optical filters. Additional analysis of the optical spectra is performed to provide further understanding of this complex spectral behaviour., Comment: Accepted for publication in MNRAS. 33 pages, 28 figures, 11 tables

Published
2021
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2. Cosmology with AGN dust time lags -- Simulating the new VEILS survey

Author

Hönig, S. F., Watson, D., Kishimoto, M., Gandhi, P., Goad, M., Horne, K., Shankar, F., Banerji, M., Boulderstone, B., Jarvis, M., Smith, M., and Sullivan, M.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

The time lag between optical and near-infrared continuum emission in active galactic nuclei (AGN) shows a tight correlation with luminosity and has been proposed as a standardisable candle for cosmology. In this paper, we explore the use of these AGN hot-dust time lags for cosmological model fitting under the constraints of the new VISTA Extragalactic Infrared Legacy Survey VEILS. This new survey will target a 9 deg^2 field observed in J- and Ks-band with a 14-day cadence and will run for three years. The same area will be covered simultaneously in the optical griz bands by the Dark Energy Survey, providing complementary time-domain optical data. We perform realistic simulations of the survey setup, showing that we expect to recover dust time lags for about 450 objects out of a total of 1350 optical type 1 AGN, spanning a redshift range of 0.1 < z < 1.2. We use the lags recovered from our simulations to calculate precise distance moduli, establish a Hubble diagram, and fit cosmological models. Assuming realistic scatter in the distribution of the dust around the AGN as well as in the normalisation of the lag-luminosity relation, we are able to constrain {\Omega}_{\Lambda} in {\Lambda}CDM with similar accuracy as current supernova samples. We discuss the benefits of combining AGN and supernovae for cosmology and connect the present work to future attempts to reach out to redshifts of z > 4., Comment: 12 pages, 6 figures, 2 tables. MNRAS in press

Published
2016
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3. Multiwavelength optical and NIR variability analysis of the Blazar PKS 0027-426

Author

Guise, E, primary, Hönig, S F, additional, Almeyda, T, additional, Horne, K, additional, Kishimoto, M, additional, Aguena, M, additional, Allam, S, additional, Andrade-Oliveira, F, additional, Asorey, J, additional, Banerji, M, additional, Bertin, E, additional, Boulderstone, B, additional, Brooks, D, additional, Burke, D L, additional, Carnero Rosell, A, additional, Carollo, D, additional, Carrasco Kind, M, additional, Carretero, J, additional, Costanzi, M, additional, da Costa, L N, additional, Davis, T M, additional, De Vicente, J, additional, Doel, P, additional, Everett, S, additional, Ferrero, I, additional, Flaugher, B, additional, Frieman, J, additional, Gandhi, P, additional, Goad, M, additional, Gruen, D, additional, Gruendl, R A, additional, Gschwend, J, additional, Gutierrez, G, additional, Hinton, S R, additional, Hollowood, D L, additional, Honscheid, K, additional, James, D J, additional, Johnson, M A C, additional, Kuehn, K, additional, Lewis, G F, additional, Lidman, C, additional, Lima, M, additional, Maia, M A G, additional, Malik, U, additional, Menanteau, F, additional, Miquel, R, additional, Morgan, R, additional, Ogando, R L C, additional, Palmese, A, additional, Paz-Chinchón, F, additional, Pereira, M E S, additional, Pieres, A, additional, Plazas Malagón, A A, additional, Sanchez, E, additional, Scarpine, V, additional, Serrano, S, additional, Sevilla-Noarbe, I, additional, Seymour, N, additional, Smith, M, additional, Soares-Santos, M, additional, Suchyta, E, additional, Swanson, M E C, additional, Tarle, G, additional, To, C, additional, and Tucker, B E, additional

Published
2021
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4. Cosmology with AGN dust time lags-simulating the new VEILS survey

Author

Honig, Sebastian F., Watson, D., Kishimoto, Makoto, Gandhi, P., Goad, M. R., Horne, K., Shankar, F., Banerji, M., Boulderstone, B., Jarvis, M. J., Smith, M., Sullivan, M., Honig, Sebastian F., Watson, D., Kishimoto, Makoto, Gandhi, P., Goad, M. R., Horne, K., Shankar, F., Banerji, M., Boulderstone, B., Jarvis, M. J., Smith, M., and Sullivan, M.

Published
2017

5. Cosmology with AGN dust time lags–simulating the new VEILS survey

Author

Hönig, S. F., primary, Watson, D., additional, Kishimoto, M., additional, Gandhi, P., additional, Goad, M., additional, Horne, K., additional, Shankar, F., additional, Banerji, M., additional, Boulderstone, B., additional, Jarvis, M., additional, Smith, M., additional, and Sullivan, M., additional

Published
2016
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6. Cosmology with AGN dust time lags-simulating the new VEILS survey.

Author

Hönig, S. F., Watson, D., Kishimoto, M., Gandhi, P., Goad, M., Horne, K., Shankar, F., Banerji, M., Boulderstone, B., Jarvis, M., Smith, M., and Sullivan, M.

Subjects
ACTIVE galactic nuclei, METAPHYSICAL cosmology, LUMINOSITY, DARK energy, TIME-domain analysis, HUBBLE'S law
Abstract

The time lag between optical and near-infrared continuum emission in active galactic nuclei (AGN) shows a tight correlation with luminosity and has been proposed as a standardizable candle for cosmology. In this paper, we explore the use of these AGN hot-dust time lags for cosmological model fitting under the constraints of the new VISTA Extragalactic Infrared Legacy Survey (VEILS). This new survey will target a 9 deg² field observed in J and Ks band with a 14-d cadence and will run for 3 yr. The same area will be covered simultaneously in the optical griz bands by the Dark Energy Survey, providing complementary time-domain optical data. We perform realistic simulations of the survey setup, showing that we expect to recover dust time lags for about 450 objects out of a total of 1350 optical type 1 AGN, spanning a redshift range of 0.1 < z < 1.2. We use the lags recovered from our simulations to calculate precise distance moduli, establish a Hubble diagram, and fit cosmological models. Assuming realistic scatter in the distribution of the dust around the AGN as well as in the normalization of the lag-luminosity relation, we are able to constrain ΩΛ in ΛCDM with similar accuracy as current supernova samples. We discuss the benefits of combining AGN and supernovae for cosmology and connect the present work to future attempts to reach out to redshifts of z > 4. [ABSTRACT FROM AUTHOR]

Published
2017
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7. Multi-wavelength Optical and NIR Variability Analysis of the Blazar PKS 0027-426

Author

E Guise, S F Hönig, T Almeyda, K Horne, M Kishimoto, M Aguena, S Allam, F Andrade-Oliveira, J Asorey, M Banerji, E Bertin, B Boulderstone, D Brooks, D L Burke, A Carnero Rosell, D Carollo, M Carrasco Kind, J Carretero, M Costanzi, L N da Costa, T M Davis, J De Vicente, P Doel, S Everett, I Ferrero, B Flaugher, J Frieman, P Gandhi, M Goad, D Gruen, R A Gruendl, J Gschwend, G Gutierrez, S R Hinton, D L Hollowood, K Honscheid, D J James, M A C Johnson, K Kuehn, G F Lewis, C Lidman, M Lima, M A G Maia, U Malik, F Menanteau, R Miquel, R Morgan, R L C Ogando, A Palmese, F Paz-Chinchón, M E S Pereira, A Pieres, A A Plazas Malagón, E Sanchez, V Scarpine, S Serrano, I Sevilla-Noarbe, N Seymour, M Smith, M Soares-Santos, E Suchyta, M E C Swanson, G Tarle, C To, B E Tucker, Univ Southampton, South Carolina State Univ, Univ St Andrews, Kyoto Sangyo Univ, Lab Interinst E Astron LIneA, Fermilab Natl Accelerator Lab, Universidade Estadual Paulista (UNESP), Ctr Invest Energet Medioambientales & Tecnol CIEM, Univ Cambridge, Inst Astrophys Paris, Sorbonne Univ, UCL, Stanford Univ, SLAC Natl Accelerator Lab, Inst Astrofis Canarias, Univ La Laguna, Astrophys Observ Turin, Natl Ctr Supercomp Applicat, Univ Illinois, Barcelona Inst Sci & Technol, Univ Trieste, INAF Osservatorio Astron Trieste, Inst Fundamental Phys Universe, Observ Nacl, Univ Queensland, Santa Cruz Inst Particle Phys, Univ Oslo, Univ Chicago, Univ Leicester, Ludwig Maximilians Univ Munchen, Ohio State Univ, Ctr Astrophys Harvard & Smithsonian, DLR Inst Data Sci, Max Planck Inst Radioastron, Macquarie Univ, Lowell Observ, Univ Sydney, Australian Natl Univ, Universidade de São Paulo (USP), Inst Catalana Recerca & Estudis Avancats, Univ Wisconsin, Univ Michigan, Princeton Univ, Inst Estudis Espacials Catalunya IEEC, CSIC, Curtin Univ, Oak Ridge Natl Lab, Inst Catalan Recerca & Estudis Avancats, University of St Andrews. School of Physics and Astronomy, University of St Andrews. St Andrews Centre for Exoplanet Science, Guise, E, Hönig, S F, Almeyda, T, Horne, K, Kishimoto, M, Aguena, M, Allam, S, Andrade-Oliveira, F, Asorey, J, Banerji, M, Bertin, E, Boulderstone, B, Brooks, D, Burke, D L, Rosell, A Carnero, Carollo, D, Kind, M Carrasco, Carretero, J, Costanzi, M, da Costa, L N, Davis, T M, De Vicente, J, Doel, P, Everett, S, Ferrero, I, Flaugher, B, Frieman, J, Gandhi, P, Goad, M, Gruen, D, Gruendl, R A, Gschwend, J, Gutierrez, G, Hinton, S R, Hollowood, D L, Honscheid, K, James, D J, Johnson, M A C, Kuehn, K, Lewis, G F, Lidman, C, Lima, M, Maia, M A G, Malik, U, Menanteau, F, Miquel, R, Morgan, R, Ogando, R L C, Palmese, A, Paz-Chinchón, F, Pereira, M E S, Pieres, A, Malagón, A A Plaza, Sanchez, E, Scarpine, V, Serrano, S, Sevilla-Noarbe, I, Seymour, N, Smith, M, Soares-Santos, M, Suchyta, E, Swanson, M E C, Tarle, G, To, C, and Tucker, B E

Subjects
quasars individual PKS 0027-426, Astrophysics::High Energy Astrophysical Phenomena, galaxies active, jets [galaxies], FOS: Physical sciences, galaxies jets, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Astrophysic, 0103 physical sciences, QB Astronomy, Astrophysics::Solar and Stellar Astrophysics, Astrophysics of Galaxie, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena, QC, Astrophysics::Galaxy Astrophysics, QB, High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics of Galaxies, 010308 nuclear & particles physics, galaxies jet, Astronomy and Astrophysics, DAS, Astrophysics - Astrophysics of Galaxies, individual: PKS 0027-426 [quasars], QC Physics, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), active [galaxies], Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present multi-wavelength spectral and temporal variability analysis of PKS 0027-426 using optical griz observations from DES (Dark Energy Survey) between 2013-2018 and VOILETTE (VEILS Optical Light curves of Extragalactic TransienT Events) between 2018-2019 and near infrared (NIR) JKs observations from VEILS (VISTAExtragalactic Infrared Legacy Survey) between 2017-2019. Multiple methods of cross-correlation of each combination of light curve provides measurements of possible lags between optical-optical, optical-NIR, and NIR-NIR emission, for each observation season and for the entire observational period. Inter-band time lag measurements consistently suggest either simultaneous emission or delays between emission regions on timescales smaller than the cadences of observations. The colour-magnitude relation between each combination of filters was also studied to determine the spectral behaviour of PKS 0027-426. Our results demonstrate complex colour behaviour that changes between bluer when brighter (BWB), stable when brighter (SWB) and redder when brighter (RWB) trends over different timescales and using different combinations of optical filters. Additional analysis of the optical spectra is performed to provide further understanding of this complex spectral behaviour., Accepted for publication in MNRAS. 33 pages, 28 figures, 11 tables

Published
2021

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