![Subhajit Sarkar](https://profiles-cardiff.imgix.net/attachments/3806?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Dr Subhajit Sarkar
Darlithydd
Grŵp Seryddiaeth
Grŵp Offeryniaeth Seryddiaeth
Canolfan Caerdydd ar gyfer Ymchwil a Thechnoleg Astroffiseg
- Ar gael fel goruchwyliwr ôl-raddedig
Trosolwyg
Rwy'n ddarlithydd prifysgol ac astroffisegydd sy'n gweithio ym maes planedau all-solar. Rwy'n ymwneud â datblygu cenadaethau ac arsyllfeydd newydd i nodweddu atmosfferau ecsoblanedau, yn enwedig cenhadaeth ESA Ariel, yn ogystal â Twinkle a chenhadaeth EXCITE NASA. Rwyf hefyd yn cymryd rhan mewn arsylwadau ecsoblanedol cylch 1 a chylch 2 JWST mewn cydweithrediad ag IoA Caergrawnt. Mae gen i ddiddordeb mewn deall prosesau atmosfferig a planedol mewn is-Neptunes cyfundrefn dymherus a chewri nwy, a sut mae'r rhain yn ymwneud â chwestiynau sylfaenol ffurfio planed ac amrywiaeth y boblogaeth allblanedol. Mae gen i ddiddordeb hefyd mewn astrobioleg, yn enwedig y potensial ar gyfer biosfferau mewn is-Neptunes tymherus a chewri nwy, sut y gallwn bennu amlder bydoedd sy'n dwyn bywyd (y fL ffactor yn yr hafaliad Drake) a sut y gallai arsylwadau ecsoblanedol allu cyfyngu damcaniaethau o darddiad bywyd.
Cyhoeddiad
2024
- Kleyheeg, A. et al. 2024. Integration and testing of a cryogenic receiver for the Exoplanet Climate Infrared Telescope (EXCITE). Presented at: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan, 16-21 June 2024Proceedings: Ground-based and Airborne Instrumentation for Astronomy X. SPIE, (10.1117/12.3020522)
- Sarkar, S., Madhusudhan, N., Constantinou, S. and Holmberg, M. 2024. Exoplanet transit spectroscopy with JWST NIRSpec: Diagnostics and homogeneous case study of WASP-39 b. Monthly Notices of the Royal Astronomical Society 531(2), pp. 2731-2756. (10.1093/mnras/stae1230)
- Booth, L., Sarkar, S., Griffin, M. and Edwards, B. 2024. Cool gaseous exoplanets: surveying the new frontier with twinkle. Monthly Notices of the Royal Astronomical Society 530(2), pp. 2166-2180. (10.1093/mnras/stae461)
2023
- Madhusudhan, N., Sarkar, S., Constantinou, S., Holmberg, M., Piette, A. A. A. and Moses, J. I. 2023. Carbon-bearing molecules in a possible Hycean atmosphere. Astrophysical Journal Letters 956(1), article number: L13. (10.3847/2041-8213/acf577)
- Edwards, B. et al. 2023. Characterizing a world within the hot-neptune desert: Transit observations of LTT 9779 b with the Hubble space telescope/WFC3. Astronomical Journal 166(4), article number: 158. (10.3847/1538-3881/acea77)
- Seidel, J. V., Nielsen, L. D. and Sarkar, S. 2023. JWST opens a window on exoplanet skies. Nature (10.1038/d41586-023-00394-6)
- Nikolaou, N. et al. 2023. Lessons learned from the 1st Ariel Machine Learning Challenge: Correcting transiting exoplanet light curves for stellar spots. RAS Techniques and Instruments 2(1), pp. 695-709. (10.1093/rasti/rzad050)
2022
- Mugnai, L. V., Pascale, E., Edwards, B., Papageorgiou, A. and Sarkar, S. 2022. ExoRad2: Generic point source radiometric model. Astrophysics Source Code Library.
- Rehm, T. et al. 2022. The design and development status of the cryogenic receiver for the EXoplanet Climate Infrared TELescope (EXCITE). Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada, 17-22 July 2022, Vol. 12184. Society of Photo-optical Instrumentation Engineers, (10.1117/12.2629588)
- Nagler, P. C. et al. 2022. The EXoplanet Climate Infrared TElescope (EXCITE). Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada, 17-22 July 2022, Vol. 12184. Society of Photo-optical Instrumentation Engineers, (10.1117/12.2629373)
- Bernard, L. et al. 2022. Design and testing of a low-resolution NIR spectrograph for the EXoplanet Climate Infrared TElescope. Presented at: SPIE Astronomical Telescopes + Instrumentation, Montréal, Québec, Canada, 17-22 July 2022, Vol. 12184. Society of Photo-optical Instrumentation Engineers, (10.1117/12.2629717)
- Bowles, N. E. et al. 2022. Ground calibration of the Ariel space telescope: optical ground support equipment design and description. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montreal, Canada, 17-23 July 2022Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, Vol. 12180. SPIE, (10.1117/12.2627049)
- Stotesbury, I. et al. 2022. Twinkle: a small satellite spectroscopy mission for the next phase of exoplanet science. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada, 17-23 July 2022Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave. , (10.1117/12.2641373)
- Morello, G., Danielski, C. and Sarkar, S. 2022. The Ariel 0.6 - 7.8 μm stellar limb-darkening coefficients. Experimental Astronomy 53, pp. 533-545. (10.1007/s10686-021-09740-w)
- Pearson, C. et al. 2022. The Ariel ground segment and instrument operations science data centre. Experimental Astronomy 53, pp. 773-806. (10.1007/s10686-020-09691-8)
- Danielski, C. et al. 2022. The homogeneous characterisation of Ariel host stars. Experimental Astronomy 53, pp. 473-510. (10.1007/s10686-021-09765-1)
- Sarkar, S. 2022. The DRAKE mission: finding the frequency of life in the Cosmos. Monthly Notices of the Royal Astronomical Society (10.1093/mnras/stac175)
2021
- Sarkar, S. and Madhusudhan, N. 2021. JexoSim 2.0: End-to-end JWST simulator for exoplanet spectroscopy - Implementation and case studies. Monthly Notices of the Royal Astronomical Society 508(1), pp. 433-452. (10.1093/mnras/stab2472)
- Sarkar, S., Pascale, E., Papageorgiou, A., Johnson, L. J. and Waldmann, I. 2021. ExoSim: the exoplanet observation simulator. Experimental Astronomy 51, pp. 287-317. (10.1007/s10686-020-09690-9)
- Mugnai, L. V., Pascale, E., Edwards, B., Papageorgiou, A. and Sarkar, S. 2021. Performance simulations tools for Space Telescopes applied to Ariel space mission.. Presented at: European Planetary Science Congress 2021, Online, 13–24 Sep 2021EPSC Abstracts. Europlanet Society pp. EPSC2021-182., (10.5194/epsc2021-182)
2020
- Mugnai, L. V., Pascale, E., Edwards, B., Papageorgiou, A. and Sarkar, S. 2020. ArielRad: the Ariel radiometric model. Experimental Astronomy 50, pp. 303-328. (10.1007/s10686-020-09676-7)
- Tinetti, G. et al. 2020. Ariel: Atmospheric Remote-sensing Infrared Exoplanet Large-survey - enabling planetary science across light-years. Definition study report. European Space Agency. Available at: https://sci.esa.int/web/ariel/-/ariel-definition-study-report-red-book
- Sarkar, S., Pascale, E., Papageorgiou, A., Johnson, L. J. and Waldmann, I. 2020. ExoSim: the exoplanet observation simulator. [Online]. arXiv. Available at: https://arxiv.org/abs/2002.03739
- Sarkar, S., Madhusudhan, N. and Papageorgiou, A. 2020. JexoSim: A time domain simulator of exoplanet transit spectroscopy with JWST. Monthly Notices of the Royal Astronomical Society 491(1), pp. 378-397. (10.1093/mnras/stz2958)
2019
- Nagler, P. C. et al. 2019. Observing exoplanets in the near-infrared from a high altitude balloon platform. Journal of Astronomical Instrumentation 8(3), article number: 1950011. (10.1142/S2251171719500119)
- Edwards, B., Mugnai, L., Tinetti, G., Pascale, E. and Sarkar, S. 2019. An updated study of potential targets for Ariel. Astronomical Journal 157(6), pp. 242. (10.3847/1538-3881/ab1cb9)
- Edwards, B. et al. 2019. Exoplanet spectroscopy and photometry with the Twinkle space telescope. Experimental Astronomy 47(1-2), pp. 29-63. (10.1007/s10686-018-9611-4)
2018
- Sarkar, S., Argyriou, I., Vandenbussche, B., Papageorgiou, A. and Pascale, E. 2018. Stellar pulsation and granulation as noise sources in exoplanet transit spectroscopy in the ARIEL space mission. Monthly Notices of the Royal Astronomical Society 481(3), pp. 2871-2877. (10.1093/mnras/sty2453)
- Zingales, T., Tinetti, G., Pillitteri, I., Leconte, J., Micela, G. and Sarkar, S. 2018. The ARIEL mission reference sample. Experimental Astronomy 46(1), pp. 67-100. (10.1007/s10686-018-9572-7)
- Tinetti, G. et al. 2018. A chemical survey of exoplanets with ARIEL. Experimental Astronomy 46(1), pp. 135-209. (10.1007/s10686-018-9598-x)
- Pascale, E. et al. 2018. The ARIEL space mission. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, TX, USA, 10-15 June 2018 Presented at Lystrup, M. et al. eds.Proceedings Volume 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, Vol. 10698. Proceedings of SPIE Bellingham, Washington: Society of Photo-Optical Instrumentation Engineers (SPIE), (10.1117/12.2311838)
- Savini, G. et al. 2018. TWINKLE: a low earth orbit visible and infrared exoplanet spectroscopy observatory. Presented at: SPIE Astronomical Telescopes + Instrumentation 2016, Edinburgh, Scotland, 26 June - 1 July 2016 Presented at MacEwen, H. A. et al. eds.Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Vol. 9904. SPIE pp. 99044M., (10.1117/12.2233691)
2017
- Sarkar, S. 2017. Exoplanet transit spectroscopy: development and application of a generic time domain simulator. PhD Thesis, Cardiff University.
2016
- Tinetti, G. et al. 2016. The science of ARIEL (Atmospheric Remote-sensing Infrared Exoplanet Large-survey). Presented at: SPIE Astronomical Telescopes + Instrumentation, Edinburgh, UK, 26 June - 1 July 2016 Presented at MacEwen, H. A. et al. eds.Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Vol. 9904. The International Society for Optical Engineering pp. 99041X., (10.1117/12.2232370)
- Sarkar, S., Papageorgiou, A. and Pascale, E. 2016. Exploring the potential of the ExoSim simulator for transit spectroscopy noise estimation. Presented at: SPIE Astronomical Telescopes + Instrumentation, Edinburgh, UK, 26 June - 1 July 2016 Presented at MacEwen, H. A. et al. eds.Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Vol. 99043R. Society of Photo-Optical Instrumentation Engineers (SPIE), (10.1117/12.2234216)
2015
- Pascale, E. et al. 2015. EChOSim: The Exoplanet Characterisation Observatory software simulator. Experimental Astronomy, pp. 1-19. (10.1007/s10686-015-9471-0)
2006
- Dalmarco, G. et al. 2006. Evaluation of external cardiac massage performance during hypogravity simulation. Presented at: International Conference of the IEEE Engineering in Medicine and Biology Society, New York, US, 30 Aug-3 Sep 20062006 International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE pp. 2904., (10.1109/IEMBS.2006.259444)
2005
- Sarkar, S., Bacal, K., Sriram, M. G., Stokes, C. R., Hurst, V. W., Johnson-Throop, K. A. and Hamilton, D. R. 2005. ISIS: The ISS Systematic Initial Survey - a new approach to guiding medical care on orbit. Aviation, Space, and Environmental Medicine 76(3), pp. 74.
2004
- Sarkar, S. 2004. Cardiopulmonary resuscitation in lunar and Martian gravity fields. Presented at: AsMA 75th Annual Scientific Meeting, Anchorage, AK, USA, 2-6 May 2004. pp. -.
Articles
- Sarkar, S., Madhusudhan, N., Constantinou, S. and Holmberg, M. 2024. Exoplanet transit spectroscopy with JWST NIRSpec: Diagnostics and homogeneous case study of WASP-39 b. Monthly Notices of the Royal Astronomical Society 531(2), pp. 2731-2756. (10.1093/mnras/stae1230)
- Booth, L., Sarkar, S., Griffin, M. and Edwards, B. 2024. Cool gaseous exoplanets: surveying the new frontier with twinkle. Monthly Notices of the Royal Astronomical Society 530(2), pp. 2166-2180. (10.1093/mnras/stae461)
- Madhusudhan, N., Sarkar, S., Constantinou, S., Holmberg, M., Piette, A. A. A. and Moses, J. I. 2023. Carbon-bearing molecules in a possible Hycean atmosphere. Astrophysical Journal Letters 956(1), article number: L13. (10.3847/2041-8213/acf577)
- Edwards, B. et al. 2023. Characterizing a world within the hot-neptune desert: Transit observations of LTT 9779 b with the Hubble space telescope/WFC3. Astronomical Journal 166(4), article number: 158. (10.3847/1538-3881/acea77)
- Seidel, J. V., Nielsen, L. D. and Sarkar, S. 2023. JWST opens a window on exoplanet skies. Nature (10.1038/d41586-023-00394-6)
- Nikolaou, N. et al. 2023. Lessons learned from the 1st Ariel Machine Learning Challenge: Correcting transiting exoplanet light curves for stellar spots. RAS Techniques and Instruments 2(1), pp. 695-709. (10.1093/rasti/rzad050)
- Morello, G., Danielski, C. and Sarkar, S. 2022. The Ariel 0.6 - 7.8 μm stellar limb-darkening coefficients. Experimental Astronomy 53, pp. 533-545. (10.1007/s10686-021-09740-w)
- Pearson, C. et al. 2022. The Ariel ground segment and instrument operations science data centre. Experimental Astronomy 53, pp. 773-806. (10.1007/s10686-020-09691-8)
- Danielski, C. et al. 2022. The homogeneous characterisation of Ariel host stars. Experimental Astronomy 53, pp. 473-510. (10.1007/s10686-021-09765-1)
- Sarkar, S. 2022. The DRAKE mission: finding the frequency of life in the Cosmos. Monthly Notices of the Royal Astronomical Society (10.1093/mnras/stac175)
- Sarkar, S. and Madhusudhan, N. 2021. JexoSim 2.0: End-to-end JWST simulator for exoplanet spectroscopy - Implementation and case studies. Monthly Notices of the Royal Astronomical Society 508(1), pp. 433-452. (10.1093/mnras/stab2472)
- Sarkar, S., Pascale, E., Papageorgiou, A., Johnson, L. J. and Waldmann, I. 2021. ExoSim: the exoplanet observation simulator. Experimental Astronomy 51, pp. 287-317. (10.1007/s10686-020-09690-9)
- Mugnai, L. V., Pascale, E., Edwards, B., Papageorgiou, A. and Sarkar, S. 2020. ArielRad: the Ariel radiometric model. Experimental Astronomy 50, pp. 303-328. (10.1007/s10686-020-09676-7)
- Sarkar, S., Madhusudhan, N. and Papageorgiou, A. 2020. JexoSim: A time domain simulator of exoplanet transit spectroscopy with JWST. Monthly Notices of the Royal Astronomical Society 491(1), pp. 378-397. (10.1093/mnras/stz2958)
- Nagler, P. C. et al. 2019. Observing exoplanets in the near-infrared from a high altitude balloon platform. Journal of Astronomical Instrumentation 8(3), article number: 1950011. (10.1142/S2251171719500119)
- Edwards, B., Mugnai, L., Tinetti, G., Pascale, E. and Sarkar, S. 2019. An updated study of potential targets for Ariel. Astronomical Journal 157(6), pp. 242. (10.3847/1538-3881/ab1cb9)
- Edwards, B. et al. 2019. Exoplanet spectroscopy and photometry with the Twinkle space telescope. Experimental Astronomy 47(1-2), pp. 29-63. (10.1007/s10686-018-9611-4)
- Sarkar, S., Argyriou, I., Vandenbussche, B., Papageorgiou, A. and Pascale, E. 2018. Stellar pulsation and granulation as noise sources in exoplanet transit spectroscopy in the ARIEL space mission. Monthly Notices of the Royal Astronomical Society 481(3), pp. 2871-2877. (10.1093/mnras/sty2453)
- Zingales, T., Tinetti, G., Pillitteri, I., Leconte, J., Micela, G. and Sarkar, S. 2018. The ARIEL mission reference sample. Experimental Astronomy 46(1), pp. 67-100. (10.1007/s10686-018-9572-7)
- Tinetti, G. et al. 2018. A chemical survey of exoplanets with ARIEL. Experimental Astronomy 46(1), pp. 135-209. (10.1007/s10686-018-9598-x)
- Pascale, E. et al. 2015. EChOSim: The Exoplanet Characterisation Observatory software simulator. Experimental Astronomy, pp. 1-19. (10.1007/s10686-015-9471-0)
- Sarkar, S., Bacal, K., Sriram, M. G., Stokes, C. R., Hurst, V. W., Johnson-Throop, K. A. and Hamilton, D. R. 2005. ISIS: The ISS Systematic Initial Survey - a new approach to guiding medical care on orbit. Aviation, Space, and Environmental Medicine 76(3), pp. 74.
Conferences
- Kleyheeg, A. et al. 2024. Integration and testing of a cryogenic receiver for the Exoplanet Climate Infrared Telescope (EXCITE). Presented at: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan, 16-21 June 2024Proceedings: Ground-based and Airborne Instrumentation for Astronomy X. SPIE, (10.1117/12.3020522)
- Rehm, T. et al. 2022. The design and development status of the cryogenic receiver for the EXoplanet Climate Infrared TELescope (EXCITE). Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada, 17-22 July 2022, Vol. 12184. Society of Photo-optical Instrumentation Engineers, (10.1117/12.2629588)
- Nagler, P. C. et al. 2022. The EXoplanet Climate Infrared TElescope (EXCITE). Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada, 17-22 July 2022, Vol. 12184. Society of Photo-optical Instrumentation Engineers, (10.1117/12.2629373)
- Bernard, L. et al. 2022. Design and testing of a low-resolution NIR spectrograph for the EXoplanet Climate Infrared TElescope. Presented at: SPIE Astronomical Telescopes + Instrumentation, Montréal, Québec, Canada, 17-22 July 2022, Vol. 12184. Society of Photo-optical Instrumentation Engineers, (10.1117/12.2629717)
- Bowles, N. E. et al. 2022. Ground calibration of the Ariel space telescope: optical ground support equipment design and description. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montreal, Canada, 17-23 July 2022Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, Vol. 12180. SPIE, (10.1117/12.2627049)
- Stotesbury, I. et al. 2022. Twinkle: a small satellite spectroscopy mission for the next phase of exoplanet science. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada, 17-23 July 2022Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave. , (10.1117/12.2641373)
- Mugnai, L. V., Pascale, E., Edwards, B., Papageorgiou, A. and Sarkar, S. 2021. Performance simulations tools for Space Telescopes applied to Ariel space mission.. Presented at: European Planetary Science Congress 2021, Online, 13–24 Sep 2021EPSC Abstracts. Europlanet Society pp. EPSC2021-182., (10.5194/epsc2021-182)
- Pascale, E. et al. 2018. The ARIEL space mission. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, TX, USA, 10-15 June 2018 Presented at Lystrup, M. et al. eds.Proceedings Volume 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, Vol. 10698. Proceedings of SPIE Bellingham, Washington: Society of Photo-Optical Instrumentation Engineers (SPIE), (10.1117/12.2311838)
- Savini, G. et al. 2018. TWINKLE: a low earth orbit visible and infrared exoplanet spectroscopy observatory. Presented at: SPIE Astronomical Telescopes + Instrumentation 2016, Edinburgh, Scotland, 26 June - 1 July 2016 Presented at MacEwen, H. A. et al. eds.Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Vol. 9904. SPIE pp. 99044M., (10.1117/12.2233691)
- Tinetti, G. et al. 2016. The science of ARIEL (Atmospheric Remote-sensing Infrared Exoplanet Large-survey). Presented at: SPIE Astronomical Telescopes + Instrumentation, Edinburgh, UK, 26 June - 1 July 2016 Presented at MacEwen, H. A. et al. eds.Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Vol. 9904. The International Society for Optical Engineering pp. 99041X., (10.1117/12.2232370)
- Sarkar, S., Papageorgiou, A. and Pascale, E. 2016. Exploring the potential of the ExoSim simulator for transit spectroscopy noise estimation. Presented at: SPIE Astronomical Telescopes + Instrumentation, Edinburgh, UK, 26 June - 1 July 2016 Presented at MacEwen, H. A. et al. eds.Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, Vol. 99043R. Society of Photo-Optical Instrumentation Engineers (SPIE), (10.1117/12.2234216)
- Dalmarco, G. et al. 2006. Evaluation of external cardiac massage performance during hypogravity simulation. Presented at: International Conference of the IEEE Engineering in Medicine and Biology Society, New York, US, 30 Aug-3 Sep 20062006 International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE pp. 2904., (10.1109/IEMBS.2006.259444)
- Sarkar, S. 2004. Cardiopulmonary resuscitation in lunar and Martian gravity fields. Presented at: AsMA 75th Annual Scientific Meeting, Anchorage, AK, USA, 2-6 May 2004. pp. -.
Monographs
- Tinetti, G. et al. 2020. Ariel: Atmospheric Remote-sensing Infrared Exoplanet Large-survey - enabling planetary science across light-years. Definition study report. European Space Agency. Available at: https://sci.esa.int/web/ariel/-/ariel-definition-study-report-red-book
Other
- Mugnai, L. V., Pascale, E., Edwards, B., Papageorgiou, A. and Sarkar, S. 2022. ExoRad2: Generic point source radiometric model. Astrophysics Source Code Library.
Thesis
- Sarkar, S. 2017. Exoplanet transit spectroscopy: development and application of a generic time domain simulator. PhD Thesis, Cardiff University.
Websites
- Sarkar, S., Pascale, E., Papageorgiou, A., Johnson, L. J. and Waldmann, I. 2020. ExoSim: the exoplanet observation simulator. [Online]. arXiv. Available at: https://arxiv.org/abs/2002.03739
Ymchwil
Gweledigaeth ymchwil
1. Chwilio am fywyd yn y Bydysawd
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Nodweddiad/dadansoddiad atmosfferig o fydoedd a allai fod yn fyw ynddynt i adnabod biolofnodion.
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Archwilio bydoedd Is-Neptunes a "Hycean" gyda JWST (mewn cydweithrediad â N. Madhusudhan).
- Rwy'n cyd-fynd â JWST GO 2722:
'Chemical Disequilibrium in a Temperate sub-Neptune'. Tua 20 awr. Gwnaethom ddefnyddio NIRISS, NIRSpec a MIRI i gael sbectrwm trosglwyddo'r is-Neifion K2-18 b o 0.6 i 12 micron. - Yr wyf yn cyd-fynd ar JWST GO rhaglen 3557:'A JWST Search for Missing Methane'. Tua 70 awr. Rydym yn defnyddio NIRISS, NIRSpec a MIRI i gael sbectra trosglwyddo ar gyfer 4 is-Neptune / Neifion maint planedau: ymgeiswyr Hycean posibl.
- Rwy'n cyd-fynd â JWST GO 2722:
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Dulliau modelu
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Modelu ystadegol
- Gweler fy mhapur yn MNRAS ar y cysyniad "cenhadaeth DRAKE," sy'n rhagweld ansicrwydd stastastistaidd ar fL, amlder ffactor bywyd yn yr hafaliad Drake.
- Mae gen i ddiddordeb mewn datblygu modelau atmosfferig i hyrwyddo ein quanitification o signalau biolofnod.
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2. Nodweddu ac egluro amrywiaeth exoplanets a systemau planedol
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Arsylwadau nodweddu atmosfferig o exoplanets
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Arsylwadau JWST
- Gweler y rhaglen arsylwadol Is-Neifion JWST uchod.
- Rwy'n gweithio ar optimeiddio biblinell JWST i echdynnu sbectra atmosfferig. Rwy'n datblygu JexoPipe, ac hyd yma rwyf wedi cymhwyso hyn i WASP-39 b (gweler fy mhapur diweddar yn MNRAS) a K2-18 b. Datblygwyd JexoSim, efelychydd arsylwi parth amser hefyd i ddarparu data mewnbwn ffug ar gyfer piblinellau, yr ydym yn gobeithio ei ddiweddaru yn fuan.
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Arolwg Giant Nwy Oer Twinkle (2025-)
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- Rwy'n arwain y cawr cŵl W / G a'r dyluniad ar gyfer yr arolwg hwn ar gyfer y genhadaeth Twinkle sydd ar ddod. Y nod yw samplu nifer fawr o blanedau nwyon tymherus oer: "cyswllt coll" rhwng y Iau poeth a chewri oer ein Cysawd Solar ein hunain. Byddwn yn dadansoddi ar gyfer cyfansoddiad, prosesau atmosfferig a thueddiadau lefel sampl i siartio'r gofod paramedr hwn a archwiliwyd yn wael. Gweler ein efelychiad rhagarweiniol / astudiaeth adalw yn MNRAS (Booth et al 2024).
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Arsylwadau HST
- Rydym yn dadansoddi data sbectrosgopeg tramwyo HST hefyd. Gyda'm myfyriwr Luke Booth, rydym wedi gweithio ar nodweddu awyrgylch LTT-9779 b, planed yn anialwch poeth Neifion, a hefyd ar newidiadau yn awyrgylch y Jupiter HD poeth 209458 b dros wahanol gyfnodau.
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Ariel
- Rwyf wedi bod yn cymryd rhan helaeth mewn efelychiadau perfformiad ar gyfer cenhadaeth Ariel (lansio 2029). Datblygais hefyd y biblinell Ariel wreiddiol, ADaRP, a sawl fersiwn o efelychydd Ariel, ExoSim. Rwyf wedi gwasanaethu fel Efelychiadau Ariel W / G plwm ac ar sawl gweithgor segment a gwyddoniaeth daear. Rwy'n cynnull yr Ariel W / G ar wyddoniaeth ategol. Rwy'n gyd-I ar grant Ariel Caerdydd UKSA.
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CYFFROI
- Cynhaliais ein efelychiadau perfformiad ac rwy'n gydweithredwr NASA ar EXCITE, arsyllfa balŵn stratosfferig i arsylwi spectra cromlin cam allblaned.
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Datblygwyd meddalwedd
- ExoSim, SpotSim, ExoSim_N, JexoSim (efelychydd JWST), TwinkleSim, ADaRP, JexoPipe
Addysgu
Addysgu israddedig cyfredol
- PX4245 / PXT145 Exoplanets a'r Chwilio am Oes: Trefnydd Modiwlau
- PX2140 Sêr a Phlanedau: Dirprwy Drefnydd Modiwl
Addysgu israddedig blaenorol
- PX1127 Planet Earth: Trefnydd Modiwlau
- PX2140 Sêr a Phlanedau: darlithydd gwadd
- PX1127 Planet Earth: Dirprwy Drefnydd Modiwl
- Rhaglennu strwythuredig PX2134: goruchwyliwr Lab
- Ymarfer Mathemategol PX1125 ar gyfer Gwyddorau Ffisegol: Marciwr
- Dulliau Mathemategol PX1222 ar gyfer Ffisegwyr 2: Marciwr
Arall
- Rwy'n goruchwylio prosiectau ymchwil PhD, MPhys, MSc a BSc (gweler y dudalen oruchwylio)
Bywgraffiad
Education
- PhD, Astrophysics, Cardiff University
- MSc (Distinction), Space Science, University College London
- Diploma in Physics (Distinction), Open University
- MA, Natural Sciences, Cambridge University
- MB, BChir, Medicine, Cambridge University
- Grad. Cert. Applied Sciences, Space Studies, University of South Australia
- Space Studies Program, International Space University
Aelodaethau proffesiynol
- Fellow of the Royal Astronomical Society
- Fellow of the Higher Education Academy
Safleoedd academaidd blaenorol
- 2022- Presennol: Darlithydd mewn Nodweddu Exoplanet, Ysgol Ffiseg a Seryddiaeth, Prifysgol Caerdydd
- 2017-2021: Cyswllt Ymchwil Ôl-ddoethurol, Prifysgol Caerdydd
- 2013-2017: Myfyriwr Ymchwil Ôl-raddedig, Prifysgol Caerdydd
- 2003-2005: Ymweld Ymchwilydd, Meddygaeth Gofod a Swyddfa Systemau Gofal Iechyd, NASA Johnson Space Center, Houston.
- 2003-2005: Darlithydd Anrhydeddus mewn Gwyddorau Bywyd Gofod, Adran y Gofod a Ffiseg Hinsawdd, Coleg Prifysgol Llundain
Allgymorth a'r Cyfryngau
- Cyfweliad Caffi Gwyddoniaeth BBC Radio Wales am daith ofod ARIEL (Ebrill 2018).
- Cyfweliad podlediad Pythagoraidd Seryddiaeth am TESS, ARIEL a theithiau ecsoblaned eraill (Ebrill 2018).
- Exoplanet yn siarad ar gyfer Rhaglenni Haf Lefel AS Caerdydd 2018/19.
- Gwylio sêr a thelesgop yn arsylwi gyda Sgowtiaid (Gwanwyn 2019).
- Sgwrs seryddiaeth ar-lein gyda Sgowtiaid (Gaeaf 2020).
- Cyfweliad cylchgrawn 'All About Space' am genhadaeth Ariel ('Rise of the Exoplanet Hunter') (Jan 2021).
- Fideo YouTube cenhadaeth twinkle ('Yr Aelodau Sefydlu') (Awst 2021).
- Cyfweliad podlediad Pythagoraidd Seryddiaeth am raglen arsylwi JWST (Rhagfyr 2021).
- Fideo YouTube Ysgol Ffiseg a Seryddiaeth Caerdydd am JWST (Rhagfyr 2021).
- Cyfweliad BBC News Wales am exoplanets a JWST (Gorffennaf 2022).
- Erthygl Newyddion a Barn Natur ar JWST (Chwefror 2023).
- Datganiad i'r wasg NASA / ESA ar arsylwi JWST K2-18 b (Medi 2023)
- Cyfweliad BBC News ('Bywyd estron yn y Bydysawd') (Medi 2023)
- Cyfweliadau rhyngwladol K2-18 b gan gynnwys: Le Parisien, Hindustan Times, News9Live (India), cylchgrawn Kosmo (Yr Eidal) (Medi / Hydref 2023)
- Gŵyl Ffiseg IoP, prif siaradwr ('Exoplanets and the Search for Life') (Tachwedd 2023)
- Siaradwr Seryddiaeth ar Tap (Caerdydd) (Tachwedd 2023)
Pwyllgorau ac adolygu
- Fi yw'r tiwtor derbyn ôl-raddedig ar gyfer y Grŵp Seryddiaeth.
- Ar hyn o bryd rwy'n gwasanaethu ar y pwyllgorau ysgol canlynol: a) Cydraddoldeb, Amrywiaeth a Chynhwysiant (EDI), b) yr Amgylchedd a chynaliadwyedd.
- Rwyf ar dîm rheoli Prosiect Ymgysylltu Ysgolion CHART-GEI a thîm rheoli'r Grŵp Offeryniaeth Seryddiaeth.
- Rwyf wedi gwasanaethu o'r blaen ar bwyllgor Moeseg a phanel cymeradwyo MSc.
- JWST TAC aelod panel exoplanet ar gyfer cylch 3
- Adolygydd grant ar gyfer Asiantaeth Ymchwil Genedlaethol Ffrainc.
- Rwyf wedi dyfarnu cyhoeddiadau ar gyfer cyfnodolion gan gynnwys PASP, RASTI a Nature.
Meysydd goruchwyliaeth
Goruchwylio presennol
- Rwy'n oruchwyliwr PhD sylfaenol ar gyfer Luke Booth a Megan Mealing.
- Ar hyn o bryd rydw i ar y tîm goruchwylio fel mentor i ddau fyfyriwr PhD.
- Ar hyn o bryd rwy'n goruchwylio'r prosiectau israddedig "Missions to the planets" a "Exoplanet transmission spectroscopy"
Goruchwyliaeth gyfredol
Prosiectau'r gorffennol
- Mae prosiectau israddedig ac MSc blaenorol yn cynnwys: "Exomoon Habitable", "Sbectrosgopi trosglwyddo o ddŵr", "Dylunio telesgop i arsylwi awyrgylch planed tebyg i'r Ddaear", "Efelychiadau ar gyfer cenhadaeth gofod Twinkle", "Effaith smotiau sêr ar sbectrosgopeg trosglwyddo ecsoblaned"
Contact Details
SarkarS3@caerdydd.ac.uk
+44 29225 14790
Adeiladau'r Frenhines - Adeilad y Gogledd, Ystafell N / 2.20, 5 The Parade, Heol Casnewydd, Caerdydd, CF24 3AA
+44 29225 14790
Adeiladau'r Frenhines - Adeilad y Gogledd, Ystafell N / 2.20, 5 The Parade, Heol Casnewydd, Caerdydd, CF24 3AA
Themâu ymchwil
Arbenigeddau
- Exoplanets
- Astrofioleg
