Science on Matteo Bachetti https://www.matteobachetti.it/tags/science/ Recent content in Science on Matteo Bachetti Hugo en Wed, 07 Jan 2026 00:00:00 +0000 One clock to rule them all https://www.matteobachetti.it/timing-cross-calibration/ Wed, 07 Jan 2026 00:00:00 +0000 https://www.matteobachetti.it/timing-cross-calibration/ A new IACHEC-endorsed method unifies the absolute timing calibration of ~15 X-ray space missions using thousands of Crab pulsar observations. A decade of quasi-periodic heartbeats in M82 https://www.matteobachetti.it/m82-qpos/ Mon, 18 Aug 2025 00:00:00 +0000 https://www.matteobachetti.it/m82-qpos/ Thirty-nine NuSTAR observations spanning ten years reveal the long-term evolution of quasi-periodic oscillations in the ultraluminous X-ray sources of M82. HEX-P's sense of ULXs https://www.matteobachetti.it/hex-p/ Mon, 27 Nov 2023 00:00:00 +0000 https://www.matteobachetti.it/hex-p/ A new mission concept, HEX-P, will revolutionize the field of ultraluminous X-ray sources. M82 X-2's extreme gluttony revealed https://www.matteobachetti.it/orbital-decay/ Wed, 05 Oct 2022 00:00:00 +0000 https://www.matteobachetti.it/orbital-decay/ M82 X-2’s orbital decay indicates large mass transfer NuSTAR's clock, 1000 times more precise. https://www.matteobachetti.it/timing-calibration/ Sun, 28 Feb 2021 00:00:00 +0000 https://www.matteobachetti.it/timing-calibration/ A new clock correction for NuSTAR makes it millisecond-pulsar ready An accreting pulsar in spin equilibrium https://www.matteobachetti.it/all-at-once/ Sun, 01 Mar 2020 20:03:01 +0000 https://www.matteobachetti.it/all-at-once/ Complex timing behavior from M82 X-2 NuSTAR aperiodic timing analysis made precise https://www.matteobachetti.it/no-time-for-dead-time-ii/ Tue, 30 Jan 2018 00:00:00 +0000 https://www.matteobachetti.it/no-time-for-dead-time-ii/ Studies on dead time continue, with two papers on dead time statistics and correction A review on Ultraluminous X-ray sources https://www.matteobachetti.it/ulxreview/ Mon, 02 May 2016 10:00:00 +0000 https://www.matteobachetti.it/ulxreview/ I wrote a review on the recent (as of 2016) breakthrough on Ultraluminous X-ray pulsars. NuSTAR aperiodic timing analysis made simple https://www.matteobachetti.it/no-time-for-dead-time/ Wed, 18 Feb 2015 00:00:00 +0000 https://www.matteobachetti.it/no-time-for-dead-time/ Dead time can affect NuSTAR timing analysis. Let us learn how to approach it. The most luminous accreting pulsar ever https://www.matteobachetti.it/m82/ Thu, 09 Oct 2014 00:00:00 +0000 https://www.matteobachetti.it/m82/ Pulsations detected from an ultraluminous X-ray source unequivocally identify it as a neutron star Medium sized or small black holes? Probably the second, says NuSTAR https://www.matteobachetti.it/ulx2013/ Wed, 13 Nov 2013 00:00:00 +0000 https://www.matteobachetti.it/ulx2013/ The spectra of ultraluminous X-ray sources are very Super-Eddington-y