Outputs (22)

Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: inferences in the stochastic gravitational-wave background search (2021)
Journal Article
Chen, S., Caballero, R. N., Guo, Y. J., Chalumeau, A., Liu, K., Shaifullah, G., Lee, K. J., Babak, S., Desvignes, G., Parthasarathy, A., Hu, H., Van Der Wateren, E., Antoniadis, J., Bak Nielsen, A. S., Bassa, C. G., Berthereau, A., Burgay, M., Champion, D. J., Cognard, I., Falxa, M., …Xu, H. (2021). Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: inferences in the stochastic gravitational-wave background search. Monthly notices of the Royal Astronomical Society, 508(4), 4970-4993. https://doi.org/10.1093/mnras/stab2833

We present results from the search for a stochastic gravitational-wave background (GWB) as predicted by the theory of General Relativity using six radio millisecond pulsars from the Data Release 2 (DR2) of the European Pulsar Timing Array (EPTA) cove... Read More about Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: inferences in the stochastic gravitational-wave background search.

Removal and replacement of interference in tied-array radio pulsar observations using the spectral kurtosis estimator (2021)
Journal Article
Purver, M., Bassa, C. G., Cognard, I., Janssen, G. H., Karuppusamy, R., Kramer, M., Lee, K. J., Liu, K., McKee, J. W., Perrodin, D., Sanidas, S., Smits, R., & Stappers, B. W. (2022). Removal and replacement of interference in tied-array radio pulsar observations using the spectral kurtosis estimator. Monthly notices of the Royal Astronomical Society, 510(2), 1597-1611. https://doi.org/10.1093/mnras/stab3434

We describe how to implement the spectral kurtosis method of interference removal (zapping) on a digitized signal of averaged power values. Spectral kurtosis is a hypothesis test, analogous to the t-test, with a null hypothesis that the amplitudes fr... Read More about Removal and replacement of interference in tied-array radio pulsar observations using the spectral kurtosis estimator.

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.

Use Case of Building an Indoor Air Quality Monitoring System (2021)
Presentation / Conference Contribution
Kureshi, R. R., Thakker, D., Mishra, B. K., & Ahmed, B. (2021, June). Use Case of Building an Indoor Air Quality Monitoring System. Presented at 7th IEEE World Forum on Internet of Things, WF-IoT 2021, New Orleans, USA

On average, we spend around 90% of the time in indoor environments. Indoor Air Quality (IAQ) has been receiving increased attention from the environmental bodies, local authorities and citizens as it is becoming clearer that poor IAQ has public healt... Read More about Use Case of Building an Indoor Air Quality Monitoring System.

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.