Browsing Institutt for teoretisk astrofysikk by Author "Gronke, Max Balthasar"

Now showing items 1-19 of 19

  • Breaking cosmic degeneracies: Disentangling neutrinos and modified gravity with kinematic information 
    Hagstotz, Steffen; Gronke, Max Balthasar; Mota, David; Baldi, Marco (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Searches for modified gravity in the large-scale structure try to detect the enhanced amplitude of density fluctuations caused by the fifth force present in many of these theories. Neutrinos, on the other hand, suppress ...
  • A bright-lensed galaxy at z = 5.4 with strong Ly α emission 
    McGreer, Ian D; Clément, Benjamin; Mainali, Ramesh; Stark, Daniel P.; Gronke, Max Balthasar; Dijkstra, Mark; Fan, Xiaohui; Bian, Fuyan; Frye, Brenda; Jiang, Linhua; Kneib, Jean-Paul; Limousin, Marceau; Walth, Gregory (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We present a detailed study of an unusually bright, lensed galaxy at z = 5.424 discovered within the CFHTLS imaging survey. With an observed flux ofiAB =23.0, J141446.82+544631.9 is one of the brightest galaxies known at ...
  • Discovery of an exceptionally bright giant arc at z = 2.369, gravitationally lensed by the Planck cluster PSZ1 G311.65 - 18.48 
    Dahle, Håkon; Aghanim, Nabila; Guennou, L.; Hudelot, P.; Kneissl, R.; Pointecouteau, E.; Beelen, Anita; Bayliss, M; Douspis, M.; Nesvadba, N.; Hempel, A.; Gronke, Max Balthasar; Burenin, R.; Dole, H.; Harrison, Debbie; Mazzotta, P.; Sunyaev, R (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    As part of an all-sky follow-up of the Planck catalogue of Sunyaev-Zeldovich (SZ) cluster candidates detected in the first 14 months of data, we are observing cluster candidates in the southern sky in the optical imaging ...
  • Giant Lyα nebulae in the illustris simulation 
    Gronke, Max Balthasar; Bird, Simeon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017. The American Astronomical Society. All rights reserved.
  • Gravitational lensing reveals ionizing ultraviolet photons escaping from a distant galaxy 
    Rivera-Thorsen, Thøger Emil Juul; Dahle, Håkon; Chisholm, John; Florian, Michael K.; Gronke, Max Balthasar; Rigby, Jane R.; Gladders, Michael D.; Mahler, Guillaume; Sharon, Keren; Bayliss, Matthew B. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    During the epoch of reionization, neutral gas in the early Universe was ionized by hard ultraviolet radiation emitted by young stars in the first galaxies. To do so, ionizing ultraviolet photons must escape from the host ...
  • Illuminating gas inflows/outflows in the MUSE deepest fields: Lyα nebulae around forming galaxies at z ≃ 3.3 
    Vanzella, E.; Balestra, I.; Gronke, Max Balthasar; Karman, W.; Caminha, G. B.; Dijkstra, Mark; Rosati, P.; De Barros, S.; Caputi, K.; Grillo, C.; Tozzi, P.; Meneghetti, M.; Mercurio, A.; Gilli, R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We report the identification of extended Lyα nebulae at z ≃ 3.3 in the Hubble Ultra Deep Field (HUDF, ≃40 kpc × 80 kpc) and behind the Hubble Frontier Field galaxy cluster MACSJ0416 (≃40 kpc), spatially associated with ...
  • Lyα Profile, Dust, and Prediction of Lyα Escape Fraction in Green Pea Galaxies 
    Yang, Huan; Malhotra, Sangeeta; Gronke, Max Balthasar; Rhoads, James E.; Leitherer, Claus; Wofford, Aida; Jiang, Tianxing; Dijkstra, Mark; Tilvi, V.; Wang, Junxian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017. The American Astronomical Society. All rights reserved.
  • The Lyα Reference Sample. VIII. Characterizing Lyα Scattering in Nearby Galaxies 
    Bridge, Joanna S.; Hayes, Matthew; Melinder, Jens; Östlin, Göran; Gronwall, Caryl; Ciardullo, Robin; Atek, Hakim; Cannon, John M.; Gronke, Max Balthasar; Guaita, Lucia; Hagen, Alex; Herenz, Edmund Christian; Kunth, Daniel; Laursen, Peter; Mas-Hesse, J. Miguel; Pardy, Stephen A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017. The American Astronomical Society. All rights reserved.
  • The Lyα-LyC connection: evidence for an enhanced contribution of UV-faint galaxies to cosmic reionization 
    Dijkstra, Mark; Gronke, Max Balthasar; Venkatesan, Aparna (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    The escape of ionizing Lyman continuum (LyC) photons requires the existence of low-NH I sightlines, which also promote escape of Lyα. We use a suite of 2500 Lyα Monte-Carlo radiative transfer simulations through models of ...
  • Magnifying the Early Episodes of Star Formation: Super Star Clusters at Cosmological Distances 
    Vanzella, E.; Castellano, M.; Meneghetti, M.; Mercurio, A.; Caminha, G. B.; Cupani, G.; Calura, F.; Christensen, L.; Merlin, E.; Rosati, P.; Gronke, Max Balthasar; Dijkstra, Mark; Mignoli, M.; Gilli, R.; De Barros, S.; Caputi, K.; Grillo, C.; Balestra, I.; Cristiani, S.; Nonino, M.; Giallongo, E.; Grazian, A.; Pentericci, L.; Fontana, A.; Comastri, A.; Vignali, C.; Zamorani, G.; Brusa, M.; Bergamini, P.; Tozzi, P. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017. The American Astronomical Society. All rights reserved.
  • Modeling 237 Lyman-α spectra of the MUSE-Wide survey 
    Gronke, Max Balthasar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We compare 237 Lyman-α (Lyα) spectra of the MUSE-Wide survey to a suite of radiative transfer simulations consisting of a central luminous source within a concentric, moving shell of neutral gas, and dust. This six parameter ...
  • Modelling the gas kinematics of an atypical Ly α emitting compact dwarf galaxy 
    Forero-Romero, J. E.; Gronke, Max Balthasar; Remolina-Gutiérrez, Maria Camila; Gravito-Camargo, Nicolás; Dijkstra, Mark (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
  • MUSE integral-field spectroscopy towards the Frontier Fields cluster Abell S1063: II. Properties of low luminosity Lyman α emitters at z > 3 
    Karman, W.; Caputi, K.; Caminha, G. B.; Gronke, Max Balthasar; Grillo, C.; Balestra, I.; Rosati, P.; Vanzella, E.; Coe, D.; Dijkstra, Mark; Koekemoer, A.; McLeod, D.; Mercurio, A.; Nonino, M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    In spite of their conjectured importance for the Epoch of Reionization, the properties of low-mass galaxies are currently still very much under debate. In this article, we study the stellar and gaseous properties of faint, ...
  • Probing modified gravity in cosmic filaments 
    Ho, Alex; Gronke, Max Balthasar; Falck, Bridget Lynn; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Multiple modifications of general relativity (GR) have been proposed in the literature in order to understand the nature of the accelerated expansion of the Universe. However, thus far all the predictions of GR have been ...
  • Resonant line transfer in a fog: Using Lyman-alpha to probe tiny structures in atomic gas 
    Gronke, Max Balthasar; Dijkstra, Mark; McCourt, Michael; Peng Oh, S. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Motivated by observational and theoretical work that suggest very small-scale (≲ 1 pc) structure in the circumgalactic medium of galaxies and in other environments, we study Lyman-α (Lyα) radiative transfer in an extremely ...
  • Slicing the cool circumgalactic medium along the major axis of a star-forming galaxy at z = 0.7 
    Lopez, S.; Tejos, N.; Barrientos, L. F.; Ledoux, C.; Sharon, Keren; Katsianis, A.; Florian, M. K.; Rivera-Thorsen, Thøger Emil Juul; Bayliss, Matthew B.; Dahle, Håkon; Fernandez-Figueroa, A.; Gladders, Michael D.; Gronke, Max Balthasar; Hamel, M.; Pessa, I.; Rigby, Jane R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We present spatially resolved Echelle spectroscopy of an intervening Mg II–Fe II–Mg I absorption-line system detected at zabs = 0.73379 towards the giant gravitational arc PSZ1 G311.65–18.48. The absorbing gas is associated ...
  • The Sunburst Arc: Direct Lyman α escape observed in the brightest known lensed galaxy 
    Rivera-Thorsen, Thøger Emil Juul; Dahle, Håkon; Gronke, Max Balthasar; Bayliss, M; Rigby, J. R.; Simcoe, R; Bordoloi, Rongmon; Turner, M.; Furesz, G (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We present rest-frame ultraviolet and optical spectroscopy of the brightest lensed galaxy yet discovered, at redshift z = 2.4. The source reveals a characteristic triple-peaked Lyman α profile that has been predicted in ...
  • Universal predictions of screened modified gravity on cluster scales 
    Gronke, Max Balthasar; Mota, David; Winther, Hans Arnold (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Modified gravity models require a screening mechanism to be able to evade the stringent constraints from local gravity experiments and, at the same time, give rise to observable astrophysical and cosmological signatures. ...
  • Unlocking the Full Potential of Extragalactic Lyα through Its Polarization Properties 
    Eide, Marius Berge; Gronke, Max Balthasar; Dijkstra, Mark; Hayes, Matthew (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Lyα is a powerful astrophysical probe. Not only is it ubiquitous at high redshifts, it is also a resonant line, making Lyα photons scatter. This scattering process depends on the physical conditions of the gas through which ...