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Evidence for a Compact Object in the Aftermath of the Extra-Galactic Transient AT2018cow
Dheeraj R. Pasham, Wynn C. G. Ho, William Alston +16
The brightest Fast Blue Optical Transients (FBOTs) are mysterious extragalactic explosions that may represent a new class of astrophysical phenomena. Their fast time to maximum bri…
VLA proper motion constraints on the origin, age, and potential magnetar future of PSR J17343333
C. M. Espinoza, M. Vidal-Navarro, W. C. G. Ho +2
The characteristic age of PSR J17343333 estimated from its current spin down rate implies that it is a young pulsar ( kyr). But the time derivative of its spin down rate…
A month of monitoring the new magnetar Swift J1555.2-5402 during an X-ray outburst
Teruaki Enoto, Mason Ng, Chin-ping Hu +23
The soft gamma-ray repeater Swift J1555.2-5402 was discovered by means of a 12-ms duration short burst detected with Swift BAT on 2021 June 3. Then 1.6 hours after the first burst…
X-ray bounds on cooling, composition, and magnetic field of the Cassiopeia A neutron star and young central compact objects
Wynn C. G. Ho, Yue Zhao, Craig O. Heinke +3
We present analysis of multiple Chandra and XMM-Newton spectra, separated by 9-19 years, of four of the youngest central compact objects (CCOs) with ages < 2500 yr: CXOU J232327.9+…
Constraints on the dense matter equation of state and neutron star properties from NICER's mass-radius estimate of PSR J0740+6620 and multimessenger observations
G. Raaijmakers, S. K. Greif, K. Hebeler +7
In recent years our understanding of the dense matter equation of state (EOS) of neutron stars has significantly improved by analyzing multimessenger data from radio/X-ray pulsars,…
Model-independent constraints on superfluidity from the cooling neutron star in Cassiopeia A
Peter S. Shternin, Dmitry D. Ofengeim, Wynn C. G. Ho +3
We present a new model-independent (applicable for a broad range of equations of state) analysis of the neutrino emissivity due to triplet neutron pairing in neutron star cores. We…