Zobrazeno 1 - 10
of 5 379
pro vyhledávání: '"A. Posselt"'
We use data from the MeerTime project on the MeerKAT telescope to ask whether the radio emission properties of millisecond pulsars (MSPs) and slowly rotating, younger pulsars (SPs) are similar or different. We show that the flux density spectra of bo
Externí odkaz:
http://arxiv.org/abs/2407.06836
The X-ray thermal isolated neutron star (XTINS) RX J0806.4--4123 shows interesting multiwavelength properties that seemingly deviate from those of similar neutron stars. An accurate determination of the spin frequency change over time can assist in i
Externí odkaz:
http://arxiv.org/abs/2407.04337
Autor:
Rho, J., Park, S. -H., Arendt, R., Matsuura, M., Milisavljevic, D., Temim, T., De Looze, I., Blair, W. P., Rest, A., Fox, O., Ravi, A. P., Koo, B. -C., Barlow, M., Burrows, A., Chevalier, R., Clayton, G., Fesen, R., Fransson, C., Fryer, C., Gomez, H. L., Janka, H. -T., Kirchschlarger, F., Laming, J. M., Orlando, S., Patnaude, D., Pavlov, G., Plucinsky, P., Posselt, B., Priestley, F., Raymond, J., Sartorio, N., Schmidt, F., Slane, P., Smith, N., Sravan, N., Vink, J., Weil, K., Wheeler, J., Yoon, S. C.
We present JWST NIRCam (F356W and F444W filters) and MIRI (F770W) images and NIRSpec- IFU spectroscopy of the young supernova remnant Cassiopeia A (Cas A). We obtained the data as part of a JWST survey of Cas A. The NIRCam and MIRI images map the spa
Externí odkaz:
http://arxiv.org/abs/2406.03685
Autor:
Hare, Jeremy, Pavlov, George G., Posselt, Bettina, Kargaltsev, Oleg, Temim, Tea, Chen, Steven
JWST observed the magnetar 4U 0142+61 with the MIRI and NIRCam instruments within a 77 min time interval on 2022 September 20-21. The low-resolution MIRI spectrum and NIRCam photometry show that the spectrum in the wavelength range 1.4-11 $\mu$m rang
Externí odkaz:
http://arxiv.org/abs/2405.03947
Autor:
Keith, M. J., Johnston, S., Karastergiou, A., Weltevrede, P., Lower, M. E., Basu, A., Posselt, B., Oswald, L. S., Parthasarathy, A., Cameron, A. D., Serylak, M., Buchner, S.
We report here on the timing of 597 pulsars over the last four years with the MeerKAT telescope. We provide Times-of-Arrival, pulsar ephemeris files and per-epoch measurements of the flux density, dispersion measure (DM) and rotation measure (RM) for
Externí odkaz:
http://arxiv.org/abs/2404.02051
Autor:
Basu, A., Weltevrede, P., Keith, M. J., Johnston, S., Karastergiou, A., Oswald, L. S., Posselt, B., Song, X., Cameron, A. D.
A number of pulsars are known to have profile evolution on timescales of months, often correlated with spin-down rate changes. Here, we present the first result from 3 years of monitoring observations from MeerKAT as part of the Thousand Pulsar Array
Externí odkaz:
http://arxiv.org/abs/2402.09065
Autor:
Vahdat, Armin, Posselt, Bettina, Pavlov, George G., Weltevrede, Patrick, Santangelo, Andrea, Johnston, Simon
We present a detailed study of the X-ray emission from PSR B1055-52 using XMM-Newton observations from 2019 and 2000. The phase-integrated X-ray emission from this pulsar is poorly described by existing neutron star atmosphere models. Instead, we con
Externí odkaz:
http://arxiv.org/abs/2401.12373
Autor:
Milisavljevic, Dan, Temim, Tea, De Looze, Ilse, Dickinson, Danielle, Laming, J. Martin, Fesen, Robert, Raymond, John C., Arendt, Richard G., Vink, Jacco, Posselt, Bettina, Pavlov, George G., Fox, Ori D., Pinarski, Ethan, Subrayan, Bhagya, Schmidt, Judy, Blair, William P., Rest, Armin, Patnaude, Daniel, Koo, Bon-Chul, Rho, Jeonghee, Orlando, Salvatore, Janka, Hans-Thomas, Andrews, Moira, Barlow, Michael J., Burrows, Adam, Chevalier, Roger, Clayton, Geoffrey, Fransson, Claes, Fryer, Christopher, Gomez, Haley L., Kirchschlager, Florian, Lee, Jae-Joon, Matsuura, Mikako, Niculescu-Duvaz, Maria, Pierel, Justin D. R., Plucinsky, Paul P., Priestley, Felix D., Ravi, Aravind P., Sartorio, Nina S., Schmidt, Franziska, Shahbandeh, Melissa, Slane, Patrick, Smith, Nathan, Weil, Kathryn, Wesson, Roger, Wheeler, J. Craig
Publikováno v:
ApJL 965 (2024) L27 (21pp)
We present initial results from a JWST survey of the youngest Galactic core-collapse supernova remnant Cassiopeia A (Cas A), made up of NIRCam and MIRI imaging mosaics that map emission from the main shell, interior, and surrounding circumstellar/int
Externí odkaz:
http://arxiv.org/abs/2401.02477
Here, we design a novel class of Janus structures PbXY(X,Y = F, Cl, Br, I) and propose it for the solar mediated photocatalytic water splitting hydrogen production as well as for the photovoltaic solarcell applications. Charge analysis shows that cov
Externí odkaz:
http://arxiv.org/abs/2312.04122
Autor:
Posselt, Christiane, Avci, Mehmet Yigit, Yigitsoy, Mehmet, Schünke, Patrick, Kolbitsch, Christoph, Schäffter, Tobias, Remmele, Stefanie
Purpose: To provide a simulation framework for routine neuroimaging test data, which allows for "stress testing" of deep segmentation networks against acquisition shifts that commonly occur in clinical practice for T2 weighted (T2w) fluid attenuated
Externí odkaz:
http://arxiv.org/abs/2311.01894