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NICER observations reveal that the X-ray transient MAXI J1348−630 is a black hole X-ray binary
- L. Zhang, D. Altamirano, F. Tombesi
- Physics
- 16 September 2020
We studied the outburst evolution and timing properties of the recently discovered X-ray transient MAXI J1348-630 as observed with NICER. We produced the fundamental diagrams commonly used to trace…
A Rapid Change in X-Ray Variability and a Jet Ejection in the Black Hole Transient MAXI J1820+070
We present Neutron Star Interior Composition Explorer X-ray and Arcminute Microkelvin Imager Large Array radio observations of a rapid hard-to-soft state transition in the black hole X-ray transient…
An improved ion source for thermal ionization mass spectrometer
- A. Basak, R. K. Bhatia, S. C. Gadkari
- Physics
- 1 December 2017
An Empirical Background Model for the NICER X-Ray Timing Instrument
- R. Remillard, M. Loewenstein, D. Buisson
- PhysicsThe Astronomical Journal
- 20 May 2021
Neutron Star Interior Composition Explorer has a comparatively low background rate, but it is highly variable, and its spectrum must be predicted using measurements unaffected by the science target.…
A NICER look at the state transitions of the black hole candidate MAXI J1535−571 during its reflares
- V. C'uneo, K. Alabarta, A. Basak
- Physics
- 4 June 2020
The black hole candidate and X-ray binary MAXI J1535-571 was discovered in 2017 September. During the decay of its discovery outburst, and before returning to quiescence, the source underwent at…
Efficient validation testing of Through-Silicon-Via (TSV) ASICs for CZT x-ray detectors
- D. Violette, B. Allen, J. Hong, A. Basak, J. Grindlay
- PhysicsOptical Engineering + Applications
- 13 September 2018
The High Resolution Energetic X-ray Imager (HREXI ) is a coded-aperture imaging telescope that utilizes a large closely-tiled array of CdZnTe (CZT) detectors, each 19.9 x 19.9 x 3mm with a 32 x 32…
HCF (HREXI Calibration Facility): Mapping out sub-pixel level responses from high resolution Cadmium Zinc Telluride (CZT) imaging X-ray detectors
- A. Basak, B. Allen, Jaesub Hong, D. Violette, J. Grindlay
- Physics
- 8 April 2020
The High Resolution Energetic X-Ray Imager (HREXI) CZT detector development program at Harvard is aimed at developing tiled arrays of finely pixelated CZT detectors for use in wide-field coded…
HREXI calibration facility: mapping out subpixel-level responses from high-resolution cadmium zinc telluride imaging x-ray detectors
- A. Basak, B. Allen, Jaesub Hong, D. Violette, J. Grindlay
- Physics
- 1 April 2020
Abstract. The High-Resolution Energetic X-ray Imager (HREXI) cadmium zinc telluride (CZT) detector development program at Harvard is aimed at developing tiled arrays of finely pixelated CZT detectors…
Triaxial instabilities in rapidly rotating neutron stars
- A. Basak
- Physics
- 5 December 2017
Viscosity driven bar mode secular instabilities of rapidly rotating neutron stars are studied using LORENE/Nrotstar code. These instabilities set a more rigorous limit to the rotation frequency of…
Detection of Noisy and Flickering Pixels from SWIFT BAT Event Data
- A. Basak
- Environmental Science, Computer Science
- 1 September 2015
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