All Outputs (236)

Noise analysis in the European Pulsar Timing Array data release 2 and its implications on the gravitational-wave background search (2021)
Journal Article
Chalumeau, A., Babak, S., Petiteau, A., Chen, S., Samajdar, A., Caballero, R. N., Theureau, G., Guillemot, L., Desvignes, G., Parthasarathy, A., Liu, K., Shaifullah, G., Hu, H., Van Der Wateren, E., Antoniadis, J., Bak Nielsen, A. S., Bassa, C. G., Berthereau, A., Burgay, M., Champion, D. J., …Xu, H. (2022). Noise analysis in the European Pulsar Timing Array data release 2 and its implications on the gravitational-wave background search. Monthly notices of the Royal Astronomical Society, 509(4), 5538-5558. https://doi.org/10.1093/mnras/stab3283

The European Pulsar Timing Array (EPTA) collaboration has recently released an extended data set for six pulsars (DR2) and reported evidence for a common red noise signal. Here we present a noise analysis for each of the six pulsars. We consider seve... Read More about Noise analysis in the European Pulsar Timing Array data release 2 and its implications on the gravitational-wave background search.

Galaxy and mass assembly (GAMA): The merging potential of brightest group galaxies (2021)
Journal Article
Banks, K., Brough, S., Holwerda, B. W., Hopkins, A. M., López-Sánchez, R., Phillipps, S., Pimbblet, K. A., & Robotham, A. S. (2021). Galaxy and mass assembly (GAMA): The merging potential of brightest group galaxies. The Astrophysical journal, 921(1), 9. https://doi.org/10.3847/1538-4357/ac1c0a

Using a volume-limited sample of 550 groups from the Galaxy And Mass Assembly Galaxy Group Catalogue spanning the halo mass range 12.8 < log[Mh M?] < 14.2, we investigate the merging potential of central Brightest Group Galaxies (BGGs). We use spectr... Read More about Galaxy and mass assembly (GAMA): The merging potential of brightest group galaxies.

PSR J2222-0137: I. Improved physical parameters for the system (2021)
Journal Article
Guo, Y. J., Freire, P. C., Guillemot, L., Kramer, M., Zhu, W. W., Wex, N., Mckee, J. W., Deller, A., Ding, H., Kaplan, D. L., Stappers, B., Cognard, I., Miao, X., Haase, L., Keith, M., Ransom, S. M., & Theureau, G. (2021). PSR J2222-0137: I. Improved physical parameters for the system. Astronomy and Astrophysics, 654, Article A16. https://doi.org/10.1051/0004-6361/202141450

Context. The PSR J2222-0137 binary system has a set of features that make it a unique laboratory for tests of gravity theories. Aims. To fully exploit the system's potential for these tests, we aim to improve the measurements of its physical paramete... Read More about PSR J2222-0137: I. Improved physical parameters for the system.

Strong-field gravity tests with the double pulsar (2021)
Journal Article
Kramer, M., Stairs, I. H., Manchester, R. N., Wex, N., Deller, A. T., Coles, W. A., Ali, M., Burgay, M., Camilo, F., Cognard, I., Damour, T., Desvignes, G., Ferdman, R. D., Freire, P. C., Grondin, S., Guillemot, L., Hobbs, G. B., Janssen, G., Karuppusamy, R., Lorimer, D. R., …Theureau, G. (2021). Strong-field gravity tests with the double pulsar. Physical Review X, 11(4), Article 041050. https://doi.org/10.1103/PhysRevX.11.041050

Continued timing observations of the double pulsar PSR J0737-3039A/B, which consists of two active radio pulsars (A and B) that orbit each other with a period of 2.45 h in a mildly eccentric (e=0.088) binary system, have led to large improvements in... Read More about Strong-field gravity tests with the double pulsar.

Sand mining far outpaces natural supply in a large alluvial river (2021)
Journal Article
Hackney, C. R., Vasilopoulos, G., Heng, S., Darbari, V., Walker, S., & Parsons, D. R. (2021). Sand mining far outpaces natural supply in a large alluvial river. Earth surface dynamics European Geosciences Union, 9(5), 1323-1334. https://doi.org/10.5194/esurf-9-1323-2021

The world's large rivers are facing reduced sediment loads due to anthropogenic activities such as hydropower development and sediment extraction. Globally, estimates of sand extraction from large river systems are lacking, in part due to the pervasi... Read More about Sand mining far outpaces natural supply in a large alluvial river.

Fusion of multi-temporal paz and sentinel-1 data for crop classification (2021)
Journal Article
Busquier, M., Valcarce-Diñeiro, R., Lopez-Sanchez, J. M., Plaza, J., Sánchez, N., & Arias-Pérez, B. (2021). Fusion of multi-temporal paz and sentinel-1 data for crop classification. Remote Sensing, 13(19), Article 3195. https://doi.org/10.3390/rs13193915

The accurate identification of crops is essential to help environmental sustainability and support agricultural policies. This study presents the use of a Spanish radar mission, PAZ, to classify agricultural areas with a very high spatial resolution.... Read More about Fusion of multi-temporal paz and sentinel-1 data for crop classification.

Galaxy and mass assembly (GAMA): The environmental impact on SFR and metallicity in galaxy groups (2021)
Journal Article
Sotillo-Ramos, D., Lara-López, M. A., Pérez-García, A. M., Pérez-Martínez, R., Hopkins, A. M., Holwerda, B. W., Liske, J., López-Sánchez, A. R., Owers, M. S., & Pimbblet, K. A. (2021). Galaxy and mass assembly (GAMA): The environmental impact on SFR and metallicity in galaxy groups. Monthly notices of the Royal Astronomical Society, 508(2), 1817-1830. https://doi.org/10.1093/mnras/stab2641

We present a study of the relationships and environmental dependencies between stellar mass, star formation rate, and gas metallicity for more than 700 galaxies in groups up to redshift 0.35 from the Galaxy And Mass Assembly (GAMA) survey. To identif... Read More about Galaxy and mass assembly (GAMA): The environmental impact on SFR and metallicity in galaxy groups.

Profile changes associated with dispersion measure events in PSR J1713+0747 (2021)
Journal Article
Lin, F. X., Lin, H. H., Luo, J., Main, R., McKee, J., Pen, U. L., Simard, D., & van Kerkwijk, M. H. (2021). Profile changes associated with dispersion measure events in PSR J1713+0747. Monthly notices of the Royal Astronomical Society, 508(1), 1115-1127. https://doi.org/10.1093/mnras/stab2529

Propagation effects in the interstellar medium and intrinsic profile changes can cause variability in the timing of pulsars, which limits the accuracy of fundamental science done via pulsar timing. One of the best timing pulsars, PSR J1713+0747, has... Read More about Profile changes associated with dispersion measure events in PSR J1713+0747.

Dynamics of salt intrusion in the Mekong Delta: Results of field observations and integrated coastal-inland modelling (2021)
Journal Article
Eslami, S., Hoekstra, P., Kernkamp, H. W. J., Nguyen Trung, N., Do Duc, D., Nguyen Nghia, H., Tran Quang, T., Van Dam, A., Darby, S. E., Parsons, D. R., Vasilopoulos, G., Braat, L., & Van Der Vegt, M. (2021). Dynamics of salt intrusion in the Mekong Delta: Results of field observations and integrated coastal-inland modelling. Earth surface dynamics European Geosciences Union, 9(4), 953-976. https://doi.org/10.5194/esurf-9-953-2021

On the list of challenges facing the world largest deltas, increased saline water intrusion (SWI) in the surface water system and its role in jeopardizing freshwater supply are often ranked very high. Yet, detailed process-based studies of SWI at the... Read More about Dynamics of salt intrusion in the Mekong Delta: Results of field observations and integrated coastal-inland modelling.

A multi-approach and multi-scale platform to model CD4+ T cells responding to infections (2021)
Journal Article
Wertheim, K. Y., Puniya, B. L., La Fleur, A., Shah, A. R., Barberis, M., & Helikar, T. (2021). A multi-approach and multi-scale platform to model CD4+ T cells responding to infections. PLoS Computational Biology, 17(8), Article e1009209. https://doi.org/10.1371/journal.pcbi.1009209

Immune responses rely on a complex adaptive system in which the body and infections interact at multiple scales and in different compartments. We developed a modular model of CD4+ T cells, which uses four modeling approaches to integrate processes at... Read More about A multi-approach and multi-scale platform to model CD4+ T cells responding to infections.

Pulsars with NenuFAR: Backend and pipelines (2021)
Journal Article
Bondonneau, L., Grießmeier, J. M., Theureau, G., Cognard, I., Brionne, M., Kondratiev, V., Bilous, A., McKee, J. W., Zarka, P., Viou, C., Guillemot, L., Chen, S., Main, R., Pilia, M., Possenti, A., Serylak, M., Shaifullah, G., Tiburzi, C., Verbiest, J. P., Wu, Z., …Tasse, C. (2021). Pulsars with NenuFAR: Backend and pipelines. Astronomy and Astrophysics, 652, https://doi.org/10.1051/0004-6361/202039339

Context. NenuFAR (New extension in Nançay upgrading LOFAR) is a new radio telescope developed and built on the site of the Nançay Radio Observatory. It is designed to observe the largely unexplored frequency window from 10 to 85 MHz, offering a high... Read More about Pulsars with NenuFAR: Backend and pipelines.

Refined mass and geometric measurements of the high-mass PSR J0740+6620 (2021)
Journal Article
Fonseca, E., Cromartie, H. T., Pennucci, T. T., Ray, P. S., Kirichenko, A. Y., Ransom, S. M., Demorest, P. B., Stairs, I. H., Arzoumanian, Z., Guillemot, L., Parthasarathy, A., Kerr, M., Cognard, I., Baker, P. T., Blumer, H., Brook, P. R., Decesar, M., Dolch, T., Dong, F. A., Ferrara, E. C., …Zhu, W. W. (2021). Refined mass and geometric measurements of the high-mass PSR J0740+6620. Astrophysical journal. Letters, 915(1), Article L12. https://doi.org/10.3847/2041-8213/ac03b8

We report results from continued timing observations of PSR J0740+6620, a high-mass, 2.8 ms radio pulsar in orbit with a likely ultracool white dwarf companion. Our data set consists of combined pulse arrival-time measurements made with the 100 m Gre... Read More about Refined mass and geometric measurements of the high-mass PSR J0740+6620.

The CHIME Pulsar Project: System Overview (2021)
Journal Article
Amiri, M., Bandura, K. M., Boyle, P. J., Brar, C., Cliche, J. F., Crowter, K., Cubranic, D., Demorest, P. B., Denman, N. T., Dobbs, M., Dong, F. Q., Fandino, M., Fonseca, E., Good, D. C., Halpern, M., Hill, A. S., Höfer, C., Kaspi, V. M., Landecker, T. L., Leung, C., …Wang, X. (2021). The CHIME Pulsar Project: System Overview. Astrophysical Journal Supplement, 255(1), Article 5. https://doi.org/10.3847/1538-4365/abfdcb

We present the design, implementation, and performance of the digital pulsar observing system constructed for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Using accelerated computing, this system processes independent, digitally steere... Read More about The CHIME Pulsar Project: System Overview.

Establishing sustainable sediment budgets is critical for climate-resilient mega-deltas (2021)
Journal Article
Vasilopoulos, G., Quan, Q. L., Parsons, D. R., Darby, S. E., Tri, V. P. D., Hung, N. N., Haigh, I. D., Voepel, H. E., Nicholas, A. P., & Aalto, R. (2021). Establishing sustainable sediment budgets is critical for climate-resilient mega-deltas. Environmental Research Letters, 16(6), Article 064089. https://doi.org/10.1088/1748-9326/ac06fc

Many of the world's major river deltas face a sustainability crisis, as they come under threat of increases in salinity and the extent of tidal zones forced by combinations of sea-level rise, changes in river discharge and channel geometry. The relat... Read More about Establishing sustainable sediment budgets is critical for climate-resilient mega-deltas.

Prediction of crop biophysical variables with panel data techniques and radar remote sensing imagery (2021)
Journal Article
de Blas, C. S., Valcarce-Diñeiro, R., Sipols, A. E., Sánchez Martín, N., Arias-Pérez, B., & Santos-Martín, M. T. (2021). Prediction of crop biophysical variables with panel data techniques and radar remote sensing imagery. Biosystems Engineering, 205, 76-92. https://doi.org/10.1016/j.biosystemseng.2021.02.014

Since the late 1970s, remote sensing techniques have been proven to be suitable for characterizing and monitoring plants and crops. In particular, synthetic aperture radar (SAR) missions contribute considerably to this prediction effort. However, the... Read More about Prediction of crop biophysical variables with panel data techniques and radar remote sensing imagery.

Unravelling the physics of multiphase AGN winds through emission line tracers (2021)
Journal Article
Richings, A. J., Faucher-Giguère, C. A., & Stern, J. (2021). Unravelling the physics of multiphase AGN winds through emission line tracers. Monthly notices of the Royal Astronomical Society, 503(2), 1568-1585. https://doi.org/10.1093/mnras/stab556

Observations of emission lines in active galactic nuclei (AGNs) often find fast (∼1000 km s−1) outflows extending to kiloparsec scales, seen in ionized, neutral atomic and molecular gas. In this work we present radiative transfer calculations of emis... Read More about Unravelling the physics of multiphase AGN winds through emission line tracers.

Project ThaiPASS: international outreach blending astronomy and Python (2021)
Journal Article
Keegans, J. D., Stancliffe, R. J., Bilton, L. E., Cashmore, C. R., Gibson, B. K., Kristensen, M. T., Lawson, T. V., Pignatari, M., Vaezzadeh, I., Côté, B., & Chongchitnan, S. (2021). Project ThaiPASS: international outreach blending astronomy and Python. Physics Education, 56(3), Article 035001. https://doi.org/10.1088/1361-6552/abdae7

We present our outreach program, the Thailand–UK Python+Astronomy Summer School (ThaiPASS), a collaborative project comprising UK and Thai institutions and assess its impact and possible application to schools in the United Kingdom. Since its incepti... Read More about Project ThaiPASS: international outreach blending astronomy and Python.

Galaxy and Mass Assembly (GAMA): The interplay between galaxy mass, SFR, and heavy element abundance in paired galaxy sets (2020)
Journal Article
Garduño, L. E., Lara-López, M. A., López-Cruz, O., Hopkins, A. M., Owers, M. S., Pimbblet, K. A., & Holwerda, B. W. (2021). Galaxy and Mass Assembly (GAMA): The interplay between galaxy mass, SFR, and heavy element abundance in paired galaxy sets. Monthly notices of the Royal Astronomical Society, 501(2), 2969-2982. https://doi.org/10.1093/mnras/staa3799

© 2021 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. We study the star formation rate (SFR), stellar mass (M∗), and the gas metallicity (Z) for 4636 galaxy pairs using the Galaxy And Mass Assembly (G... Read More about Galaxy and Mass Assembly (GAMA): The interplay between galaxy mass, SFR, and heavy element abundance in paired galaxy sets.

Dispersion measure variability for 36 millisecond pulsars at 150 MHz with LOFAR (2020)
Journal Article
Donner, J. Y., Verbiest, J. P., Tiburzi, C., Osłowski, S., Künsemöller, J., Bak Nielsen, A. S., Grießmeier, J. M., Serylak, M., Kramer, M., Anderson, J. M., Wucknitz, O., Keane, E., Kondratiev, V., Sobey, C., McKee, J. W., Bilous, A. V., Breton, R. P., Brüggen, M., Ciardi, B., Hoeft, M., …Vocks, C. (2020). Dispersion measure variability for 36 millisecond pulsars at 150 MHz with LOFAR. Astronomy and Astrophysics, 644, Article A153. https://doi.org/10.1051/0004-6361/202039517

Context. Radio pulses from pulsars are affected by plasma dispersion, which results in a frequency-dependent propagation delay. Variations in the magnitude of this effect lead to an additional source of red noise in pulsar timing experiments, includi... Read More about Dispersion measure variability for 36 millisecond pulsars at 150 MHz with LOFAR.

PRIMAGE project: predictive in silico multiscale analytics to support childhood cancer personalised evaluation empowered by imaging biomarkers (2020)
Journal Article
Martí-Bonmatí, L., Alberich-Bayarri, Á., Ladenstein, R., Blanquer, I., Segrelles, J. D., Cerdá-Alberich, L., Gkontra, P., Hero, B., García-Aznar, J. M., Keim, D., Jentner, W., Seymour, K., Jiménez-Pastor, A., González-Valverde, I., Martínez de las Heras, B., Essiaf, S., Walker, D., Rochette, M., Bubak, M., Mestres, J., …Neri, E. (2020). PRIMAGE project: predictive in silico multiscale analytics to support childhood cancer personalised evaluation empowered by imaging biomarkers. European Radiology Experimental, 4(1), https://doi.org/10.1186/s41747-020-00150-9

PRIMAGE is one of the largest and more ambitious research projects dealing with medical imaging, artificial intelligence and cancer treatment in children. It is a 4-year European Commission-financed project that has 16 European partners in the consor... Read More about PRIMAGE project: predictive in silico multiscale analytics to support childhood cancer personalised evaluation empowered by imaging biomarkers.