Zobrazeno 1 - 10
of 211
pro vyhledávání: '"LASENBY, Anthony N."'
Autor:
López-Caraballo, Carlos Hugo, Ruiz-Granados, Beatriz, Santos, Ricardo Genova, Fernández-Torreiro, Mateo, Rubiño-Martin, Jose Alberto, Peel, Mike, Poidevin, Frederick, Artal, Eduardo, Ashdown, Mark, Barreiro, Rita Belen, Casas, Francisco Javier, de la Hoz, Elena, González-González, Raul, Guidi, Federica, Herranz, Diego, Hoyland, Roger, Lasenby, Anthony N, Martinez-Gonzalez, Enrique, Piccirillo, Lucio, Rebolo, Rafael, Tramonte, Denis, Vansyngel, Flavien, Vielva, Patricio, Watson, Robert
We use the new QUIJOTE-MFI wide survey (11, 13, 17 and 19 GHz) to produce spectral energy distributions (SEDs), on an angular scale of 1 deg, of the supernova remnants (SNRs) CTB 80, Cygnus Loop, HB 21, CTA 1, Tycho and HB 9. We provide new measureme
Externí odkaz:
http://arxiv.org/abs/2307.15518
Autor:
Letey, Mary I., Shumaylov, Zakhar, Agocs, Fruzsina J., Handley, Will J., Hobson, Michael P., Lasenby, Anthony N.
Publikováno v:
Phys. Rev. D 109, 123502 (2024)
We discuss the challenges of motivating, constructing, and quantizing a canonically normalized inflationary perturbation in spatially curved universes. We show that this has historically proved challenging due to the interaction of nonadiabaticity wi
Externí odkaz:
http://arxiv.org/abs/2211.17248
Autor:
Hergt, Lukas T., Agocs, Fruzsina J., Handley, Will J., Hobson, Michael P., Lasenby, Anthony N.
We investigate the effects of non-zero spatial curvature on cosmic inflation in the light of cosmic microwave background (CMB) anisotropy measurements from the Planck 2018 legacy release and from the 2015 observing season of BICEP2 and the Keck Array
Externí odkaz:
http://arxiv.org/abs/2205.07374
Publikováno v:
Phys. Rev. D 103, 123511 (2021)
We review the effect that the choice of a uniform or logarithmic prior has on the Bayesian evidence and hence on Bayesian model comparisons when data provide only a one-sided bound on a parameter. We investigate two particular examples: the tensor-to
Externí odkaz:
http://arxiv.org/abs/2102.11511
Autor:
Perrott, Yvette C., López-Caniego, Marcos, Génova-Santos, Ricardo T., Rubiño-Martín, Jose Alberto, Ashdown, Mark, Herranz, Diego, Lähteenmäki, Anne, Lasenby, Anthony N., López-Caraballo, Carlos H., Poidevin, Frédérick, Tornikoski, Merja
We observed 51 sources in the Q-U-I JOint TEnerife (QUIJOTE) cosmological fields which were brighter than 1 Jy at 30 GHz in the Planck Point Source Catalogue (version 1), with the Very Large Array at 28 -- 40 GHz, in order to characterise their high-
Externí odkaz:
http://arxiv.org/abs/2102.04520
Publikováno v:
Phys. Rev. D 104, 024034 (2021)
We investigate the particle content of parity-preserving Weyl gauge theories of gravity (WGT$^+$) about a Minkowski background. Within a subset of the full theory, we use a systematic method previously presented in [arXiv:1812.02675] to determine 862
Externí odkaz:
http://arxiv.org/abs/2005.02228
Autor:
Lasenby, Anthony N.
Publikováno v:
Adv. Appl. Clifford Algebras (2019) 29: 79
We discuss an approach to gravitational waves based on Geometric Algebra and Gauge Theory Gravity. After a brief introduction to Geometric Algebra (GA), we consider Gauge Theory Gravity, which uses symmetries expressed within the GA of flat spacetime
Externí odkaz:
http://arxiv.org/abs/1912.05960
Autor:
Fabian, Andrew C., Lasenby, Anthony N.
Black holes are a common feature of the Universe. They are observed as stellar mass black holes spread throughout galaxies and as supermassive objects in their centres. Observations of stars orbiting close to the centre of our Galaxy provide detailed
Externí odkaz:
http://arxiv.org/abs/1911.04305
Publikováno v:
Phys. Rev. D 101, 064038 (2020)
We present 48 further examples, in addition to the 10 identified in [1], of ghost-and-tachyon-free critical cases of parity-conserving Poincar\'e gauge theories of gravity (PGT$^+$) that are also power-counting renormalizable (PCR). This is achieved
Externí odkaz:
http://arxiv.org/abs/1910.14197
Publikováno v:
Phys. Rev. D 100, 103511 (2019)
We present three non-parametric Bayesian primordial reconstructions using Planck 2018 polarization data: linear spline primordial power spectrum reconstructions, cubic spline inflationary potential reconstructions and sharp-featured primordial power
Externí odkaz:
http://arxiv.org/abs/1908.00906