Publications


Identifying the progenitors of present-day early-type galaxies in observational surveys: correcting 'progenitor bias' using the Horizon-AGN simulation

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 474 (2018) 3140-3151

G Martin, S Kaviraj, JEG Devriendt, Y Dubois, C Pichon, C Laigle


Search for nonstandard neutrino interactions with IceCube DeepCore

Physical Review D, Particles and fields American Physical Society 97 (2018) ARTN 072009

MG Aartsen, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, I Al Samarai, D Altmann, K Andeen, T Anderson, I Ansseau, G Anton, C Arguelles, J Auffenberg, S Axani, H Bagherpour, X Bai, JP Barron, SW Barwick, V Baum, R Bay, JJ Beatty, JB Tjus, K-H Becker, S BenZvi, D Berley, E Bernardini, DZ Besson, G Binder, D Bindig, E Blaufuss, S Blot, C Bohm, M Boerner, F Bos, D Bose, S Boeser, O Botner, E Bourbeau, J Bourbeau, F Bradascio, J Braun, L Brayeur, M Brenzke, H-P Bretz, S Bron, J Brostean-Kaiser, A Burgman, T Carver, J Casey, M Casier, E Cheung, D Chirkin, A Christov, K Clark, L Classen, S Coenders, GH Collin, JM Conrad, DF Cowen, R Cross, M Day, JPAM de Andre, C De Clercq, JJ DeLaunay, H Dembinski, S De Ridder, P Desiati, KD de Vries, G de Wasseige, M de With, T DeYoung, JC Diaz-Velez, V di Lorenzo, H Dujmovic, JP Dumm, M Dunkman, E Dvorak, B Eberhardt, T Ehrhardt, B Eichmann, P Eller, PA Evenson, S Fahey, AR Fazely, J Felde, K Filimonov, C Finley, S Flis, A Franckowiak, E Friedman, T Fuchs, TK Gaisser, J Gallagher, L Gerhardt, K Ghorbani, W Giang, T Glauch, T Gluesenkamp, A Goldschmidt, JG Gonzalez, D Grant, Z Griffith, C Haack, A Hallgren, F Halzen, K Hanson, D Hebecker, D Heereman, K Helbing, R Hellauer, S Hickford, J Hignight, GC Hill, KD Hoffman, R Hoffmann, B Hokanson-Fasig, K Hoshina, F Huang, M Huber, K Hultqvist, M Huennefeld, S In, A Ishihara, E Jacobi, GS Japaridze, M Jeong, K Jero, BJP Jones, P Kalaczynski, W Kang, A Kappes, T Karg, A Karle, U Katz, M Kauer, A Keivani, JL Kelley, A Kheirandish, J Kim, M Kim, T Kintscher, C Kirby, J Kiryluk, T Kittler, SR Klein, G Kohnen, R Koirala, H Kolanoski, L Koepke, C Kopper, S Kopper, JP Koschinsky, DJ Koskinen, M Kowalski, K Krings, M Kroll, G Kruckl, J Kunnen, S Kunwar, N Kurahashi, T Kuwabara, A Kyriacou, M Labare, JL Lanfranchi, MJ Larson, F Lauber, D Lennarz, M Lesiak-Bzdak, M Leuermann, QR Liu, L Lu, J Luenemann, W Luszczak, J Madsen, G Maggi, KBM Mahn, S Mancina, R Maruyama, K Mase, R Maunu, F McNally, K Meagher, M Medici, M Meier, T Menne, G Merino, T Meures, S Miarecki, J Micallef, G Momente, T Montaruli, RW Moore, M Moulai, R Nahnhauer, P Nakarmi, U Naumann, G Neer, H Niederhausen, SC Nowicki, DR Nygren, AO Pollmann, A Olivas, A O'Murchadha, T Palczewski, H Pandya, DV Pankova, P Peiffer, JA Pepper, CP de los Heros, D Pieloth, E Pinat, M Plum, PB Price, GT Przybylski, C Raab, L Raedel, M Rameez, K Rawlins, IC Rea, R Reimann, B Relethford, M Relich, E Resconi, W Rhode, M Richman, S Robertson, M Rongen, C Rott, T Ruhe, D Ryckbosch, D Rysewyk, T Saelzer, SES Herrera, A Sandrock, J Sandroos, M Santander, S Sarkar, S Sarkar, K Satalecka, P Schlunder, T Schmidt, A Schneider, S Schoenen, S Schoeneberg, L Schumacher, D Seckel, S Seunarine, J Soedingrekso, D Soldin, M Song, GM Spiczak, C Spiering, J Stachurska, M Stamatikos, T Stanev, A Stasik, J Stettner, A Steuer, T Stezelberger, RG Stokstad, A Stossl, NL Strotjohann, T Stuttard, GW Sullivan, M Sutherland, I Taboada, J Tatar, F Tenholt, S Ter-Antonyan, A Terliuk, G Tesic, S Tilav, PA Toale, MN Tobin, S Toscano, D Tosi, M Tselengidou, CF Tung, A Turcati, CF Turley, B Ty, E Unger, M Usner, J Vandenbroucke, W Van Driessche, N van Eijndhoven, S Vanheule, J van Santen, M Vehring, E Vogel, M Vraeghe, C Walck, A Wallace, M Wallraff, FD Wandler, N Wandkowsky, A Waza, C Weaver, MJ Weiss, C Wendt, J Werthebach, S Westerhoff, BJ Whelan, K Wiebe, CH Wiebusch, L Wille, DR Williams, L Wills, M Wolf, J Wood, TR Wood, E Woolsey, K Woschnagg, DL Xu, XW Xu, Y Xu, JP Yanez, G Yodh, S Yoshida, T Yuan, M Zoll, I Collaboration


A Search for Neutrino Emission from Fast Radio Bursts with Six Years of IceCube Data

Astrophysical Journal University of Chicago Press 857 (2018) ARTN 117

MG Aartsen, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, I Al Samarai, D Altmann, K Andeen, T Anderson, I Ansseau, G Anton, C Arguelles, J Auffenberg, S Axani, H Bagherpour, X Bai, JP Barron, SW Barwick, V Baum, R Bay, JJ Beatty, JB Tjus, K-H Becker, S BenZvi, D Berley, E Bernardini, DZ Besson, G Binder, D Bindig, E Blaufuss, S Blot, C Bohm, M Boerner, F Bos, S Boeser, O Botner, E Bourbeau, J Bourbeau, F Bradascio, J Braun, M Brenzke, H-P Bretz, S Bron, J Brostean-Kaiser, A Burgman, RS Busse, T Carver, E Cheung, D Chirkin, A Christov, K Clark, L Classen, GH Collins, JM Conrad, P Coppin, P Correa, DF Cowen, R Cross, P Dave, M Day, JPAM de Andre, C De Clercq, JJ DeLaunay, H Dembinski, S De Ridder, P Desiati, KD de Vries, G de Wasseige, M de With, T DeYoung, JC Diaz-Velez, V di Lorenzo, H Dujmovic, JP Dumm, M Dunkman, E Dvorak, B Eberhardt, T Ehrhardt, B Eichmann, P Eller, PA Evenson, S Fahey, AR Fazely, J Felde, K Filimonov, C Finley, S Flis, A Franckowiak, E Friedman, A Fritz, TK Gaisser, J Gallagher, L Gerhardt, K Ghorbani, W Giang, T Glauch, T Gluesenkamp, A Goldschmidt, JG Gonzalez, D Grant, Z Griffith, C Haack, A Hallgren, F Halzen, K Hanson, D Hebecker, D Heereman, K Helbing, R Hellauer, S Hickford, J Hignight, GC Hill, KD Hoffman, R Hoffmann, T Hoinka, B Hokanson-Fasig, K Hoshina, F Huang, M Huber, K Hultqvist, M Huennefele, R Hussain, S In, N Iovine, A Ishihara, E Jacobi, GS Japaridze, M Jeong, K Jero, BJP Jones, P Kalaczynski, W Kang, A Kappes, D Kappesser, T Karg, A Karle, U Katz, M Kauer, A Keivani, JL Kelley, A Kheirandish, J Kim, M Kim, T Kintscher, J Kiryluk, T Kittler, SR Klein, R Koirala, H Kolanoski, L Koepke, C Kopper, S Kopper, JP Koschinsky, DJ Koskinen, M Kowalski, K Krings, M Kroll, G Krueckl, S Kunwar, N Kurahashi, T Kuwabara, A Kyriacou, M Labare, JL Lanfranchi, MJ Larson, F Lauber, K Leonard, M Lesiak-Bzdak, M Leuermann, QR Liu, CJL Mariscal, L Lu, J Luenemann, W Luszczak, J Madsen, G Maggi, KBM Mahn, S Mancina, R Maruyama, K Mase, R Maunu, K Meagher, M Medici, M Meier, T Menne, G Merino, T Meures, S Miarecki, J Micallef, G Momente, T Montaruli, RW Moore, M Moulai, R Nahnhauer, P Nakarmi, U Naumann, G Neer, H Niederhausen, SC Nowicki, DR Nygren, AO Pollmann, A Olivas, A O'Murchadha, E O'Sullivan, T Palczewski, H Pandya, DV Pankova, P Peiffer, JA Pepper, CP de los Heros, D Pieloth, E Pinat, M Plum, PB Price, GT Przybylski, C Raab, L Raedel, M Rameez, L Rauch, K Rawlins, IC Rea, R Reimann, B Relethford, M Relich, E Resconi, W Rhode, M Richman, S Robertson, M Rongen, C Rott, T Ruhe, D Ryckbosch, D Rysewyk, I Safa, T Saelzer, SES Herrera, A Sandrock, J Sandroos, M Santander, S Sarkar, K Satalecka, P Schlunder, T Schmidt, A Schneider, S Schoenen, S Schoenberg, L Schumacher, S Sclafani, D Seckel, S Seunarine, J Soedingrekso, D Soldin, M Song, GM Spiczak, C Spiering, J Stachurska, M Stamatikos, T Stanev, A Stasik, R Stein, J Stettner, A Steuer, T Stezelberger, RG Stokstad, A Stossl, NL Strotjohann, T Stuttard, GW Sullivan, M Sutherland, I Taboada, J Tatar, F Tenholt, S Ter-Antonyan, A Terliuk, S Tilav, PA Toale, MN Tobin, C Toennis, S Toscano, D Tosi, M Tselengidou, CF Tung, A Turcati, CF Turley, B Ty, E Unger, M Usner, J Vandenbroucke, W Van Driessche, D van Eijk, N van Eijndhoven, S Vanheule, J van Santen, E Vogel, M Vraeghe, C Walck, A Wallace, M Wallraff, FD Wandler, N Wandkowsky, A Waza, C Weaver, MJ Weiss, C Wendt, J Werthebach, S Westerhoff, BJ Whelan, K Wiebe, CH Wiebusch, L Wille, DR Williams, L Wills, M Wolf, J Wood, TR Wood, E Woolsey, K Woschnagg, DL Xu, XW Xu, Y Xu, JP Yanez, G Yodh, S Yoshida, T Yuan, I Collaboration


Gas flows in the circumgalactic medium around simulated high-redshift galaxies

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 473 (2018) 4279-4301

PD Mitchell, J Blaizot, J Devriendt, T Kimm, L Michel-Dansac, J Rosdahl, A Slyz


Electron acceleration by wave turbulence in a magnetized plasma

Nature Physics 14 (2018) 475-479

A Rigby, F Cruz, B Albertazzi, R Bamford, AR Bell, JE Cross, F Fraschetti, P Graham, Y Hara, PM Kozlowski, Y Kuramitsu, DQ Lamb, S Lebedev, JR Marques, F Miniati, T Morita, M Oliver, B Reville, Y Sakawa, S Sarkar, C Spindloe, R Trines, P Tzeferacos, LO Silva, R Bingham, M Koenig, G Gregori

© 2018 The Author(s). Astrophysical shocks are commonly revealed by the non-thermal emission of energetic electrons accelerated in situ 1-3 . Strong shocks are expected to accelerate particles to very high energies 4-6 ; however, they require a source of particles with velocities fast enough to permit multiple shock crossings. While the resulting diffusive shock acceleration 4 process can account for observations, the kinetic physics regulating the continuous injection of non-thermal particles is not well understood. Indeed, this injection problem is particularly acute for electrons, which rely on high-frequency plasma fluctuations to raise them above the thermal pool 7,8 . Here we show, using laboratory laser-produced shock experiments, that, in the presence of a strong magnetic field, significant electron pre-heating is achieved. We demonstrate that the key mechanism in producing these energetic electrons is through the generation of lower-hybrid turbulence via shock-reflected ions. Our experimental results are analogous to many astrophysical systems, including the interaction of a comet with the solar wind 9 , a setting where electron acceleration via lower-hybrid waves is possible.


Impact of relativistic effects on cosmological parameter estimation

PHYSICAL REVIEW D 97 (2018) ARTN 023537

CS Lorenz, D Alonso, PG Ferreira


Measurement of Atmospheric Neutrino Oscillations at 6-56 GeV with IceCube DeepCore.

Physical Review Letters 120 (2018) 071801-071801

MG Aartsen, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, I Al Samarai, D Altmann, K Andeen, T Anderson, I Ansseau, G Anton, C Argüelles, J Auffenberg, S Axani, H Bagherpour, X Bai, JP Barron, SW Barwick, V Baum, R Bay, JJ Beatty, J Becker Tjus, K-H Becker, S BenZvi, D Berley, E Bernardini, DZ Besson, G Binder, D Bindig, E Blaufuss, S Blot, C Bohm, M Börner, F Bos, D Bose, S Böser, O Botner, J Bourbeau, F Bradascio, J Braun, L Brayeur, M Brenzke, H-P Bretz, S Bron, J Brostean-Kaiser, A Burgman, T Carver, J Casey, M Casier, E Cheung, D Chirkin, A Christov, K Clark, L Classen, S Coenders, GH Collin, JM Conrad, DF Cowen, R Cross, M Day, JPAM de André, C De Clercq, JJ DeLaunay, H Dembinski, S De Ridder, P Desiati, KD de Vries, G de Wasseige, M de With, T DeYoung, JC Díaz-Vélez, V di Lorenzo, H Dujmovic, JP Dumm, M Dunkman, B Eberhardt, T Ehrhardt, B Eichmann, P Eller, PA Evenson, S Fahey, AR Fazely, J Felde, K Filimonov, C Finley, S Flis, A Franckowiak, E Friedman, T Fuchs, TK Gaisser, J Gallagher, L Gerhardt, K Ghorbani, W Giang, T Glauch, T Glüsenkamp, A Goldschmidt, JG Gonzalez, D Grant, Z Griffith, C Haack, A Hallgren, F Halzen, K Hanson, D Hebecker, D Heereman, K Helbing, R Hellauer, S Hickford, J Hignight, GC Hill, KD Hoffman, R Hoffmann, B Hokanson-Fasig, K Hoshina, F Huang, M Huber, K Hultqvist, M Hünnefeld, S In, A Ishihara, E Jacobi, GS Japaridze, M Jeong, K Jero, BJP Jones, P Kalaczynski, W Kang, A Kappes, T Karg, A Karle, U Katz, M Kauer, A Keivani, JL Kelley, A Kheirandish, J Kim, M Kim, T Kintscher, J Kiryluk, T Kittler, SR Klein, G Kohnen, R Koirala, H Kolanoski, L Köpke, C Kopper, S Kopper, JP Koschinsky, DJ Koskinen, M Kowalski, K Krings, M Kroll, G Krückl, J Kunnen, S Kunwar, N Kurahashi, T Kuwabara, A Kyriacou, M Labare, JL Lanfranchi, MJ Larson, F Lauber, D Lennarz, M Lesiak-Bzdak, M Leuermann, QR Liu, L Lu, J Lünemann, W Luszczak, J Madsen, G Maggi, KBM Mahn, S Mancina, R Maruyama, K Mase, R Maunu, F McNally, K Meagher, M Medici, M Meier, T Menne, G Merino, T Meures, S Miarecki, J Micallef, G Momenté, T Montaruli, RW Moore, M Moulai, R Nahnhauer, P Nakarmi, U Naumann, G Neer, H Niederhausen, SC Nowicki, DR Nygren, A Obertacke Pollmann, A Olivas, A O'Murchadha, T Palczewski, H Pandya, DV Pankova, P Peiffer, JA Pepper, C Pérez de Los Heros, D Pieloth, E Pinat, M Plum, PB Price, GT Przybylski, C Raab, L Rädel, M Rameez, K Rawlins, IC Rea, R Reimann, B Relethford, M Relich, E Resconi, W Rhode, M Richman, S Robertson, M Rongen, C Rott, T Ruhe, D Ryckbosch, D Rysewyk, T Sälzer, SE Sanchez Herrera, A Sandrock, J Sandroos, S Sarkar, S Sarkar, K Satalecka, P Schlunder, T Schmidt, A Schneider, S Schoenen, S Schöneberg, L Schumacher, D Seckel, S Seunarine, J Soedingrekso, D Soldin, M Song, GM Spiczak, C Spiering, J Stachurska, M Stamatikos, T Stanev, A Stasik, J Stettner, A Steuer, T Stezelberger, RG Stokstad, A Stößl, NL Strotjohann, GW Sullivan, M Sutherland, I Taboada, J Tatar, F Tenholt, S Ter-Antonyan, A Terliuk, G Tešić, S Tilav, PA Toale, MN Tobin, S Toscano, D Tosi, M Tselengidou, CF Tung, A Turcati, CF Turley, B Ty, E Unger, M Usner, J Vandenbroucke, W Van Driessche, N van Eijndhoven, S Vanheule, J van Santen, M Vehring, E Vogel, M Vraeghe, C Walck, A Wallace, M Wallraff, FD Wandler, N Wandkowsky, A Waza, C Weaver, MJ Weiss, C Wendt, J Werthebach, S Westerhoff, BJ Whelan, K Wiebe, CH Wiebusch, L Wille, DR Williams, L Wills, M Wolf, J Wood, TR Wood, E Woolsey, K Woschnagg, DL Xu, XW Xu, Y Xu, JP Yanez, G Yodh, S Yoshida, T Yuan, M Zoll

We present a measurement of the atmospheric neutrino oscillation parameters using three years of data from the IceCube Neutrino Observatory. The DeepCore infill array in the center of IceCube enables the detection and reconstruction of neutrinos produced by the interaction of cosmic rays in Earth's atmosphere at energies as low as ∼5  GeV. That energy threshold permits measurements of muon neutrino disappearance, over a range of baselines up to the diameter of the Earth, probing the same range of L/E_{ν} as long-baseline experiments but with substantially higher-energy neutrinos. This analysis uses neutrinos from the full sky with reconstructed energies from 5.6 to 56 GeV. We measure Δm_{32}^{2}=2.31_{-0.13}^{+0.11}×10^{-3}  eV^{2} and sin^{2}θ_{23}=0.51_{-0.09}^{+0.07}, assuming normal neutrino mass ordering. These results are consistent with, and of similar precision to, those from accelerator- and reactor-based experiments.


Galaxy evolution in the metric of the cosmic web

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 474 (2018) 547-571

K Kraljic, S Arnouts, C Pichon, C Laigle, S de la Torre, D Vibert, C Cadiou, Y Dubois, M Treyer, C Schimd, S Codis, V de Lapparent, J Devriendt, HS Hwang, D Le Borgne, N Malavasi, B Milliard, M Musso, D Pogosyan, M Alpaslan, J Bland-Hawthorn, AH Wright


KiDS-i-800: Comparing weak gravitational lensing measurements from same-sky surveys

Monthly Notices of the Royal Astronomical Society 477 (2018) 4285-4307

A Amon, C Heymans, D Klaes, T Erben, C Blake, H Hildebrandt, H Hoekstra, K Kuijken, L Miller, CB Morrison, A Choi, JTA de Jong, K Glazebrook, N Irisarri, B Joachimi, S Joudaki, A Kannawadi, C Lidman, N Napolitano, D Parkinson, P Schneider, E van Uitert, M Viola, C Wolf

© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. We present a weak gravitational lensing analysis of 815 deg 2 of i-band imaging from the Kilo-Degree Survey (KiDS-i-800). In contrast to the deep r-band observations, which take priority during excellent seeing conditions and form the primary KiDS data set (KiDS-r-450), the complementary yet shallower KiDS-i-800 spans a wide range of observing conditions. The overlapping KiDS-i-800 and KiDS-r-450 imaging therefore provides a unique opportunity to assess the robustness of weak lensing measurements. In our analysis we introduce two new 'null' tests. The 'nulled' two-point shear correlation function uses a matched catalogue to show that the calibrated KiDS-i-800 and KiDS-r-450 shear measurements agree at the level of 1 ± 4 per cent.We use five galaxy lens samples to determine a 'nulled' galaxy-galaxy lensing signal from the full KiDS-i-800 and KiDS-r-450 surveys and find that the measurements agree to 7 ± 5 per cent when the KiDS-i-800 source redshift distribution is calibrated using either spectroscopic redshifts, or the 30-band photometric redshifts from the COSMOS survey.


KiDS-450+2dFLenS: Cosmological parameter constraints from weak gravitational lensing tomography and overlapping redshift-space galaxy clustering

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 474 (2018) 4894-4924

S Joudaki, C Blake, A Johnson, A Amon, M Asgari, A Choi, T Erben, K Glazebrook, J Harnois-Deraps, C Heymans, H Hildebrandt, H Hoekstra, D Klaes, K Kuijken, C Lidman, A Mead, L Miller, D Parkinson, GB Poole, P Schneider, M Viola, C Wolf


KiDS+GAMA: Cosmology constraints from a joint analysis of cosmic shear, galaxy-galaxy lensing, and angular clustering

Monthly Notices of the Royal Astronomical Society 476 (2018) 4662-4689

E van Uitert, B Joachimi, S Joudaki, A Amon, C Heymans, F Köhlinger, M Asgari, C Blake, A Choi, T Erben, DJ Farrow, J Harnois-Déraps, H Hildebrandt, H Hoekstra, TD Kitching, D Klaes, K Kuijken, J Merten, L Miller, R Nakajima, P Schneider, E Valentijn, M Viola

© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We present cosmological parameter constraints from a joint analysis of three cosmological probes: the tomographic cosmic shear signal in~450 deg 2 of data from the Kilo Degree Survey (KiDS), the galaxy-matter cross-correlation signal of galaxies from the Galaxies And Mass Assembly (GAMA) survey determined with KiDS weak lensing, and the angular correlation function of the same GAMA galaxies. We use fast power spectrum estimators that are based on simple integrals over the real-space correlation functions, and show that they are practically unbiased over relevant angular frequency ranges. We test our full pipeline on numerical simulations that are tailored to KiDS and retrieve the input cosmology. By fitting different combinations of power spectra, we demonstrate that the three probes are internally consistent. For all probes combined, we obtain S 8 ≡ σ 8 √ Ωm/0.3 = 0.800 -0.027 +0.029 , consistent with Planck and the fiducial KiDS-450 cosmic shear correlation function results. Marginalizing over wide priors on the mean of the tomographic redshift distributions yields consistent results for S 8 with an increase of 28 per cent in the error. The combination of probes results in a 26 per cent reduction in uncertainties of S 8 over using the cosmic shear power spectra alone. The main gain from these additional probes comes through their constraining power on nuisance parameters, such as the galaxy intrinsic alignment amplitude or potential shifts in the redshift distributions, which are up to a factor of 2 better constrained compared to using cosmic shear alone, demonstrating the value of large-scale structure probe combination.


Caught in the rhythm I. How satellites settle into a plane around their central galaxy

ASTRONOMY & ASTROPHYSICS 613 (2018) ARTN A4

C Welker, Y Dubois, C Pichon, J Devriendt, NE Chisari


Reconstruction of a direction-dependent primordial power spectrum from Planck CMB data

Journal of Cosmology and Astroparticle Physics 2018 (2018)

A Durakovic, P Hunt, S Mukherjee, S Sarkar, T Souradeep

© 2018 IOP Publishing Ltd and Sissa Medialab. We consider the possibility that the primordial curvature perturbation is direction-dependent. To first order this is parameterised by a quadrupolar modulation of the power spectrum and results in statistical anisotropy of the CMB, which can be quantified using 'bipolar spherical harmonics'. We compute these for the Planck DR2-2015 SMICA map and estimate the noise covariance from Planck Full Focal Plane 9 simulations. A constant quadrupolar modulation is detected with 2.2 σ significance, dropping to 2σ when the primordial power is assumed to scale with wave number k as a power law. Going beyond previous work we now allow the spectrum to have arbitrary scale-dependence. Our non-parametric reconstruction then suggests several spectral features, the most p rominent at k ∼ 0.006 Mpc -1 . When a constant quadrupolar modulation is fitted to data in the range 0.005 ≤ k/Mpc -1 ≤ 0.008, its preferred directions are found to be related to the cosmic hemispherical asymmetry and the CMB dipole. To determine the significance we apply two test statistics to our reconstructions of the quadrupolar modulation from data, against reconstructions of realisations of noise only. With a test statistic sensitive only to the amplitude of the modulation, the reconstructions from the multipole range 30 ≤ ℓ ≤ 1200 are unusual with 2.1σ significance. With the second test statistic, sensitive also to the direction, the significance rises to 6.9σ. Our approach is easily generalised to include other data sets such as polarisation, large-scale structure and forthcoming 21-cm line observations which will enable these anomalies to be investigated further.


COSMOS2015 photometric redshifts probe the impact of filaments on galaxy properties

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 473 (2018) 5437-5458

C Laigle, C Pichon, S Arnouts, HJ McCracken, Y Dubois, J Devriendt, A Slyz, D Le Borgne, A Benoit-Levy, HS Hwang, O Ilbert, K Kraljic, N Malavasi, C Park, D Vibert


The dipole anisotropy of AllWISE galaxies

Monthly Notices of the Royal Astronomical Society Blackwell Publishing Inc. 477 (2018) 1772-1781

M Rameez, R Mohayaee, S Sarkar, J Colin

We determine the dipole in the WISE galaxy catalogue. After reducing star contamination to <0.1% by rejecting sources with high apparent motion and those close to the Galactic plane, we eliminate low redshift sources to suppress the non-kinematic, clustering dipole. We remove sources within {\pm}5{\deg} of the super-galactic plane, as well as those within 1'' of 2MRS sources at redshift z < 0.03. We enforce cuts on the source angular extent to preferentially select distant ones. As we progress along these steps, the dipole converges in direction to within 5{\deg} of the CMB dipole and its magnitude also progressively reduces but stabilises at {\sim}0.012, corresponding to a velocity >1000 km/s if it is solely of kinematic origin. However, previous studies have shown that only {\sim}70% of the velocity of the Local Group as inferred from the CMB dipole is due to sources at z < 0.03. We examine the Dark Sky simulations to quantify the prevalence of such environments and find that <2.1% of Milky Way-like observers in a {\Lambda}CDM universe should observe the bulk flow (> 240 km/s extending to z > 0.03) that we do. We construct mock catalogues in the neighbourhood of such peculiar observers in order to mimic our final galaxy selection and quantify the residual clustering dipole. After subtracting this the remaining dipole is 0.0048 {\pm} 0.0022, corresponding to a velocity of 420 {\pm} 213 km/s which is consistent with the CMB. However the sources (at z > 0.03) of such a large clustering dipole remain to be identified.


Implications of strong intergalactic magnetic fields for ultrahigh-energy cosmic-ray astronomy

Physical Review D 96 (2017)

R Alves Batista, M-S Shin, J Devriendt, D Semikoz, G Sigl


Distinguishing between neutrinos and time-varying dark energy through cosmic time

Physical Review D 96 (2017)

CS Lorenz, E Calabrese, D Alonso

© 2017 American Physical Society. We study the correlations between parameters characterizing neutrino physics and the evolution of dark energy. Using a fluid approach, we show that time-varying dark energy models exhibit degeneracies with the cosmic neutrino background over extended periods of the cosmic history, leading to a degraded estimation of the total mass and number of species of neutrinos. We investigate how to break degeneracies and combine multiple probes across cosmic time to anchor the behavior of the two components. We use Planck cosmic microwave background data and baryonic acoustic oscillation measurements from the BOSS, SDSS, and 6dF surveys to present current limits on the model parameters, and then forecast the future reach from the CMB Stage-4 and DESI experiments. We show that a multiprobe analysis of current data provides only marginal improvement on the determination of the individual parameters and no reduction of the correlations. Future observations will better distinguish the neutrino mass and preserve the current sensitivity to the number of species even in case of a time-varying dark energy component.


Calibration of weak-lensing shear in the Kilo-Degree Survey

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 467 (2017) 1627-1651

IF Conti, R Herbonnet, H Hoekstra, J Merten, L Miller, M Viola


Prospects for Cherenkov Telescope Array Observations of the Young Supernova Remnant RX J1713.7-3946

ASTROPHYSICAL JOURNAL 840 (2017) ARTN 74

F Acero, R Aloisio, J Amans, E Amato, LA Antonelli, C Aramo, T Armstrong, F Arqueros, K Asano, M Ashley, M Backes, C Balazs, A Balzer, A Bamba, M Barkov, JA Barrio, W Benbow, K Bernloehr, V Beshley, C Bigongiari, A Biland, A Bilinsky, E Bissaldi, J Biteau, O Blanch, P Blasi, J Blazek, C Boisson, G Bonanno, A Bonardi, C Bonavolonta, G Bonnoli, C Braiding, S Brau-Nogue, J Bregeon, AM Brown, V Bugaev, A Bulgarelli, T Bulik, M Burton, A Burtovoi, G Busetto, M Bottcher, R Cameron, M Capalbi, A Caproni, P Caraveo, R Carosi, E Cascone, M Cerruti, S Chaty, A Chen, X Chen, M Chernyakova, M Chikawa, J Chudoba, J Cohen-Tanugi, S Colafrancesco, V Conforti, JL Contreras, A Costa, G Cotter, S Covino, G Covone, P Cumani, G Cusumano, F D'Ammando, D D'Urso, M Daniel, F Dazzi, A De Angelis, G De Cesare, A De Franco, F De Frondat, EMDG Dal Pino, C De Lisio, RDLR Lopez, B De Lotto, M de Naurois, F De Palma, M Del Santo, C Delgado, D della Volpe, T Di Girolamo, C Di Giulio, F Di Pierro, L Di Venere, M Doro, J Dournaux, D Dumas, V Dwarkadas, C Diaz, J Ebr, K Egberts, S Einecke, D Elsaesser, S Eschbach, D Falceta-Goncalves, G Fasola, E Fedorova, A Fernandez-Barral, G Ferrand, M Fesquet, E Fiandrini, A Fiasson, MD Filipovic, V Fioretti, L Font, G Fontaine, FJ Franco, L Freixas Coromina, Y Fujita, Y Fukui, S Funk, A Forster, A Gadola, RG Lopez, M Garczarczyk, N Giglietto, F Giordano, A Giuliani, J Glicenstein, R Gnatyk, P Goldoni, T Grabarczyk, R Graciani, J Graham, P Grandi, J Granot, AJ Green, S Griffiths, S Gunji, H Hakobyan, S Hara, T Hassan, M Hayashida, M Heller, JC Helo, J Hinton, B Hnatyk, J Huet, M Huetten, TB Humensky, M Hussein, J Horandel, Y Ikeno, T Inada, Y Inome, S Inoue, T Inoue, Y Inoue, K Ioka, M Iori, J Jacquemier, P Janecek, D Jankowsky, I Jung, P Kaaret, H Katagiri, S Kimeswenger, S Kimura, J Knodlseder, B Koch, J Kocot, K Kohri, N Komin, Y Konno, K Kosack, S Koyama, M Kraus, H Kubo, GK Mezek, J Kushida, N La Palombara, K Lalik, G Lamanna, H Landt, J Lapington, P Laporte, S Lee, J Lees, J Lefaucheur, J-P Lenain, G Leto, E Lindfors, T Lohse, S Lombardi, F Longo, M Lopez, F Lucarelli, PL Luque-Escamilla, R Lopez-Coto, MC Maccarone, G Maier, G Malaguti, D Mandat, G Maneva, S Mangano, A Marcowith, J Marti, M Martinez, G Martinez, S Masuda, G Maurin, N Maxted, C Melioli, T Mineo, N Mirabal, T Mizuno, R Moderski, M Mohammed, T Montaruli, A Moralejo, K Mori, G Morlino, A Morselli, E Moulin, R Mukherjee, C Mundell, H Muraishi, K Murase, S Nagataki, T Nagayoshi, T Naito, D Nakajima, T Nakamori, R Nemmen, J Niemiec, D Nieto, M Nievas-Rosillo, M Nikolajuk, K Nishijima, K Noda, L Nogues, D Nosek, B Novosyadlyj, S Nozaki, Y Ohira, M Ohishi, S Ohm, A Okumura, RA Ong, R Orito, A Orlati, M Ostrowski, I Oya, M Padovani, J Palacio, M Palatka, JM Paredes, S Pavy, A Pe'er, M Persic, P Petrucci, O Petruk, A Pisarski, M Pohl, A Porcelli, E Prandini, J Prast, G Principe, M Prouza, E Pueschel, G Puelhofer, A Quirrenbach, M Rameez, O Reimer, M Renaud, M Ribo, J Rico, V Rizi, J Rodriguez, GR Fernandez, JJ Rodriguez Vazquez, P Romano, G Romeo, J Rosado, J Rousselle, G Rowell, B Rudak, I Sadeh, S Safi-Harb, T Saito, N Sakaki, D Sanchez, P Sangiorgi, H Sano, M Santander, S Sarkar, M Sawada, EJ Schioppa, H Schoorlemmer, P Schovanek, F Schussler, O Sergijenko, M Servillat, A Shalchi, RC Shellard, H Siejkowski, A Sillanpaa, D Simone, V Sliusar, H Sol, S Stanic, R Starling, L Stawarz, S Stefanik, M Stephan, T Stolarczyk, M Szanecki, T Szepieniec, G Tagliaferri, H Tajima, M Takahashi, J Takeda, M Tanaka, S Tanaka, LA Tejedor, I Telezhinsky, P Temnikov, Y Terada, D Tescaro, M Teshima, V Testa, S Thoudam, F Tokanai, DF Torres, E Torresi, G Tosti, C Townsley, P Travnicek, C Trichard, M Trifoglio, S Tsujimoto, V Vagelli, P Vallania, L Valore, W van Driel, C van Eldik, J Vandenbroucke, V Vassiliev, M Vecchi, S Vercellone, S Vergani, C Vigorito, S Vorobiov, M Vrastil, ML Vazquez Acosta, SJ Wagner, R Wagner, SP Wakely, R Walter, JE Ward, JJ Watson, A Weinstein, M White, R White, A Wierzcholska, P Wilcox, DA Williams, R Wischnewski, P Wojcik, T Yamamoto, H Yamamoto, R Yamazaki, S Yanagita, L Yang, T Yoshida, M Yoshida, S Yoshiike, T Yoshikoshi, M Zacharias, L Zampieri, R Zanin, M Zavrtanik, D Zavrtanik, A Zdziarski, A Zech, H Zechlin, V Zhdanov, A Ziegler, J Zorn


High-redshift radio galaxies and divergence from the CMB dipole

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 471 (2017) 1045-1055

J Colin, R Mohayaee, M Rameez, S Sarkar

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