Browsing by Author "Stern, D."

Now showing items 1-11 of 11

    • An extragalactic spectroscopic survey of the SSA22 field 

      Saez, C.; Lehmer, B. D.; Bauer, F. E.; Stern, D.; Gonzales, A.; Rreza, I.; Alexander, D. M.; Matsuda, Y.; Geach, J. E.; Harrison, F. A.; Hayashino, T. (2015-07-01)
      We present Very Large Telescope VIMOS, Keck DEIMOS and Keck LRIS multi-object spectra of 367 sources in the field of the z ≈ 3.09 protocluster SSA22. Sources are spectroscopically classified via template matching, allowing ...

    • Galaxy Clusters around Radio-loud Active Galactic Nuclei at 1.3 lt z lt 3.2 as seen by Spitzer 

      Wylezalek, D.; Galametz, A.; Stern, D.; Vernet, J.; De Breuck, C.; Seymour, N.; Brodwin, M.; Eisenhardt, P.R.M.; Gonzalez, A.H.; Hatch, N.; Jarvis, M.J.; Rettura, A.; Stanford, S. A.; Stevens, J.A. (2013-05-01)
      We report the first results from the Clusters Around Radio-Loud AGN program, a Cycle 7 and 8 Spitzer Space Telescope snapshot program to investigate the environments of a large sample of obscured and unobscured luminous ...

    • The Herschel view of the environment of the radio galaxy 4C+41.17 at z = 3.8 

      Wylezalek, D.; Vernet, J.; De Breuck, C.; Stern, D.; Galametz, A.; Seymour, N.; Jarvis, M.J.; Barthel, P.; Drouart, G.; Greve, T.R.; Haas, M.; Hatch, N.; Ivison, R.; Lehnert, M.; Meisenheimer, K.; Miley, G.; Nesvadba, N.; Rottgering, H.J.A.; Stevens, J.A. (2013-02-01)
      We present Herschel observations at 70, 160, 250, 350 and 500 μm of the environment of the radio galaxy 4C+41.17 at z = 3.792. About 65 per cent of the extracted sources are securely identified with mid-infrared sources ...

    • The high energy X-ray probe (HEX-P): a new window into neutron star accretion 

      Ludlam, R. M.; Malacaria, C.; Sokolova-Lapa, E.; Fuerst, F.; Pradhan, P.; Shaw, A. W.; Pottschmidt, K.; Pike, S.; Vasilopoulos, G.; Wilms, J.; García, J. A.; Madsen, K.; Stern, D.; Maitra, C.; Del Santo, M.; Walton, D. J.; Brumback, M. C.; van den Eijnden, J. (2023-12-12)
      Accreting neutron stars (NSs) represent a unique laboratory for probing the physics of accretion in the presence of strong magnetic fields (B ≳ 108 G). Additionally, the matter inside the NS itself exists in an ultra-dense, ...

    • The high energy X-ray probe (HEX-P): constraining supermassive black hole growth with population spin measurements 

      Piotrowska, J. M.; García, J. A.; Walton, D. J.; Beckmann, R. S.; Stern, D.; Ballantyne, D. R.; Wilkins, D. R.; Bianchi, S.; Boorman, P. G.; Buchner, J.; Chen, C.-T.; Coppi, P.; Dauser, T.; Fabian, A.C.; Kammoun, E.; Madsen, K.; Mallick, L.; Matt, G.; Matzeu, G.; Nardini, E.; Pizzetti, A.; Puccetti, S.; Ricci, C.; Tombesi, F.; Torres-Albà, N.; Wong, K.-W. (2024-03-28)
      Constraining the primary growth channel of supermassive black holes (SMBHs) remains one the most actively debated questions in the context of cosmological structure formation. Owing to the expected connection between SMBH ...

    • The high energy X-ray probe (HEX-P): magnetars and other isolated neutron stars 

      Alford, J. A. J.; Younes, G. A.; Wadiasingh, Z.; Abdelmaguid, M.; An, H.; Bachetti, M.; Baring, M. G.; Beloborodov, A.; Chen, A. Y.; Enoto, T.; García, J. A.; Gelfand, J. D.; Gotthelf, E. V.; Harding, A. K.; Hu, C-P.; Jaodand, A. D.; Kaspi, V.; Kim, C.; Kouveliotou, C.; Kuiper, L.; Mori, K.; Nynka, M.; Park, J.; Stern, D.; Valverde, J.; Walton, D. J. (2024-01-09)
      The hard X-ray emission from magnetars and other isolated neutron stars remains under-explored. An instrument with higher sensitivity to hard X-rays is critical to understanding the physics of neutron star magnetospheres ...

    • Imaging Polarization of the Blue-excess Hot Dust-obscured Galaxy WISE J011601.41–050504.0 

      Assef, R. J.; Bauer, F. E.; Blain, A. W.; Brightman, M.; Díaz-Santos, T.; Eisenhardt, P. R. M.; Jun, H. D.; Stern, D.; Tsai, C.-W.; Walton, D. J.; Wu, J. W. (2022-07-28)
      We report on VLT/FORS2 imaging polarimetry observations in the R Special band of WISE J011601.41–050504.0 (W0116–0505), a heavily obscured hyperluminous quasar at z = 3.173 classified as a Hot Dust-obscured Galaxy (Hot ...

    • Long-term pulse period evolution of the ultra-luminous X-ray pulsar NGC 7793 P13 

      Fuerst, F.; Walton, D. J.; Heida, M.; Bachetti, M.; Pinto, C.; Middleton, M. J.; Brightman, M.; Earnshaw, H. P.; Barret, D.; Fabian, A. C.; Kretschmar, P.; Pottschmidt, K.; Ptak, A.; Roberts, T.; Stern, D.; Webb, N.; Wilms, J. (2021-07-16)
      Ultra-luminous X-ray pulsars (ULXPs) provide a unique opportunity to study super-Eddington accretion. We present the results of a monitoring campaign of ULXP NGC 7793 P13. Over our four-year monitoring campaign with Swift, ...

    • Rapid Coeval Black Hole and Host Galaxy Growth in MRCnbsp1138-262 : The Hungry Spider 

      Seymour, N.; Altieri, B.; De Breuck, C.; Barthel, P.; Coia, D.; Conversi, L.; Dannerbauer, H.; Dey, A.; Dickinson, M.; Drouart, G.; Galametz, A.; Greve, T.R.; Haas, M.; Hatch, N.; Ibar, E.; Ivison, R.; Jarvis, M.J.; Kovács, A.; Kurk, J.; Lehnert, M.; Miley, G.; Nesvadba, N.; Rawlings, J.I.; Rettura, A.; Röttgering, H.; Rocca-Volmerange, B.; Sánchez-Portal, M.; Santos, J. S.; Stern, D.; Stevens, J.; Valtchanov, I.; Vernet, J.; Wylezalek, D. (2012-08-01)
      We present a detailed study of the infrared spectral energy distribution of the high-redshift radio galaxy MRC1138-26 at z = 2.156, also known as the Spiderweb Galaxy. By combining photometry from Spitzer, Herschel and ...

    • A sample of 6C radio sources designed to find objects at redshift z>4: II - spectrophotometry and emission line properties 

      Jarvis, M.J.; Rawlings, S.; Lacy, M.; Blundell, K.M.; Bunker, A.; Eales, S.; Saunders, R.; Spinrad, H.; Stern, D.; Willott, C.J. (2001)

    • Why z > 1 radio-loud galaxies are commonly located in protoclusters 

      Hatch, N. A.; Wylezalek, D.; Kurk, J. D.; Stern, D.; Breuck, C. De; Jarvis, M.J.; Galametz, A.; Gonzalez, A. H.; Hartley, W. G.; Mortlock, A.; Seymour, N.; Stevens, J. A. (2014-11-21)
      Distant powerful radio-loud active galactic nuclei (RLAGN) tend to reside in dense environments and are commonly found in proto-clusters at z > 1.3. We examine whether this occurs because RLAGN are hosted by massive galaxies, ...