Outputs (47)

Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars (2022)
Journal Article
Liu, K., Antoniadis, J., Bassa, C. G., Chen, S., Cognard, I., Gaikwad, M., Hu, H., Jang, J., Janssen, G. H., Karuppusamy, R., Kramer, M., Lee, K. J., Main, R. A., Mall, G., Mckee, J. W., Mickaliger, M. B., Perrodin, D., Sanidas, S. A., Stappers, B. W., Wang, L., …Possenti, A. (2022). Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars. Monthly notices of the Royal Astronomical Society, 513(3), 4037-4044. https://doi.org/10.1093/mnras/stac1082

We report on the detection of quasi-periodic micro-structure in three millisecond pulsars (MSPs), PSRs J1022+1001, J2145-0750, and J1744-1134, using high time resolution data acquired with the Large European Array for Pulsars at a radio frequency of... Read More about Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars.

Probing the Local Interstellar Medium with Scintillometry of the Bright Pulsar B1133 + 16 (2022)
Journal Article
McKee, J. W., Zhu, H., Stinebring, D. R., & Cordes, J. M. (2022). Probing the Local Interstellar Medium with Scintillometry of the Bright Pulsar B1133 + 16. The Astrophysical journal, 927(1), Article 99. https://doi.org/10.3847/1538-4357/ac460b

The interstellar medium hosts a population of scattering screens, most of unknown origin. Scintillation studies of pulsars provide a sensitive tool for resolving these scattering screens and a means of measuring their properties. In this paper, we re... Read More about Probing the Local Interstellar Medium with Scintillometry of the Bright Pulsar B1133 + 16.

Dual-frequency single-pulse study of PSR B0950+08 (2022)
Journal Article
Bilous, A. V., Grießmeier, J. M., Pennucci, T., Wu, Z., Bondonneau, L., Kondratiev, V., Van Leeuwen, J., Maan, Y., Connor, L., Oostrum, L. C., Petroff, E., Verbiest, J. P., Vohl, D., Mckee, J. W., Shaifullah, G., Theureau, G., Ulyanov, O. M., Cecconi, B., Coolen, A. H., Corbel, S., …Ziemke, J. (2022). Dual-frequency single-pulse study of PSR B0950+08. Astronomy and Astrophysics, 658, Article A143. https://doi.org/10.1051/0004-6361/202142242

PSR B0950+08 is a bright nonrecycled pulsar whose single-pulse fluence variability is reportedly large. Based on observations at two widely separated frequencies, 55 MHz (NenuFAR) and 1.4 GHz (Westerbork Synthesis Radio Telescope), we review the prop... Read More about Dual-frequency single-pulse study of PSR B0950+08.

The International Pulsar Timing Array second data release: Search for an isotropic gravitational wave background (2022)
Journal Article
Antoniadis, J., Arzoumanian, Z., Babak, S., Bailes, M., Bak Nielsen, A. S., Baker, P. T., Bassa, C. G., Bécsy, B., Berthereau, A., Bonetti, M., Brazier, A., Brook, P. R., Burgay, M., Burke-Spolaor, S., Caballero, R. N., Casey-Clyde, J. A., Chalumeau, A., Champion, D. J., Charisi, M., Chatterjee, S., …Shaifullah, G. (2022). The International Pulsar Timing Array second data release: Search for an isotropic gravitational wave background. Monthly notices of the Royal Astronomical Society, 510(4), 4873-4887. https://doi.org/10.1093/mnras/stab3418

We searched for an isotropic stochastic gravitational wave background in the second data release of the International Pulsar Timing Array, a global collaboration synthesizing decadal-length pulsar-timing campaigns in North America, Europe, and Austra... Read More about The International Pulsar Timing Array second data release: Search for an isotropic gravitational wave background.

Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars (2022)
Journal Article
Mall, G., Main, R. A., Antoniadis, J., Bassa, C. G., Burgay, M., Chen, S., Cognard, I., Concu, R., Corongiu, A., Gaikwad, M., Hu, H., Janssen, G. H., Karuppusamy, R., Kramer, M., Lee, K. J., Liu, K., McKee, J. W., Melis, A., Mickaliger, M. B., Perrodin, D., …Zhu, W. W. (2022). Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars. Monthly notices of the Royal Astronomical Society, 511(1), 1104-1114. https://doi.org/10.1093/mnras/stac096

In this work, we study variations in the parabolic scintillation arcs of the binary millisecond pulsar PSR J1643-1224 over five years using the Large European Array for Pulsars (LEAP). The two-dimensional (2D) power spectrum of scintillation, called... Read More about Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars.

Localizing FRBs through VLBI with the Algonquin Radio Observatory 10 m Telescope (2022)
Journal Article
Cassanelli, T., Leung, C., Rahman, M., Vanderlinde, K., Mena-Parra, J., Cary, S., Masui, K. W., Luo, J., Lin, H. H., Bij, A., Gill, A., Baker, D., Bandura, K., Berger, S., Boyle, P. J., Brar, C., Chatterjee, S., Cubranic, D., Dobbs, M., Fonseca, E., …Tendulkar, S. P. (2022). Localizing FRBs through VLBI with the Algonquin Radio Observatory 10 m Telescope. Astronomical Journal, 163(2), Article 65. https://doi.org/10.3847/1538-3881/ac3d2f

The Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB experiment has detected thousands of fast radio bursts (FRBs) due to its sensitivity and wide field of view; however, its low angular resolution prevents it from localizing events to thei... Read More about Localizing FRBs through VLBI with the Algonquin Radio Observatory 10 m Telescope.

Study of 72 Pulsars Discovered in the PALFA Survey: Timing Analysis, Glitch Activity, Emission Variability, and a Pulsar in an Eccentric Binary (2022)
Journal Article
Parent, E., Sewalls, H., Freire, P. C., Matheny, T., Lyne, A. G., Perera, B. B., Cardoso, F., McLaughlin, M. A., Allen, B., Brazier, A., Camilo, F., Chatterjee, S., Cordes, J. M., Crawford, F., Deneva, J. S., Dong, F. A., Ferdman, R. D., Fonseca, E., Hessels, J. W., Kaspi, V. M., …Zhu, W. W. (2022). Study of 72 Pulsars Discovered in the PALFA Survey: Timing Analysis, Glitch Activity, Emission Variability, and a Pulsar in an Eccentric Binary. The Astrophysical journal, 924(2), Article 135. https://doi.org/10.3847/1538-4357/ac375d

We present new discoveries and results from long-term timing of 72 pulsars discovered in the Pulsar Arecibo L-band Feed Array (PALFA) survey, including precise determination of astrometric and spin parameters, and flux density and scatter broadening... Read More about Study of 72 Pulsars Discovered in the PALFA Survey: Timing Analysis, Glitch Activity, Emission Variability, and a Pulsar in an Eccentric Binary.

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.