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A tidal disruption event (TDE) may occur when a star is torn apart by the tidal force of a black hole (BH). Eventually, an accretion disc is thought to form out of stellar debris falling back towards the BH. If the star's orbital angular momentum vec
Externí odkaz:
http://arxiv.org/abs/2405.07642
Autor:
Wen, S., Jonker, P. G., Levan, A. J., Li, D., Stone, N. C., Zabludoff, A. I., Cao, Z., Wevers, T., Pasham, D. R., Lewin, C., Kara, E.
The tidal disruption event (TDE) AT2018fyk has unusual X-ray, UV, and optical light curves that decay over the first $\sim$600d, rebrighten, and decay again around 1200d. We explain this behavior as a one-off TDE associated with a massive black hole
Externí odkaz:
http://arxiv.org/abs/2405.00894
Autor:
Eappachen, D., Jonker, P. G., Quirola-Vásquez, J., Sánchez, D. Mata, Inkenhaag, A., Levan, A. J., Fraser, M., Torres, M. A. P., Bauer, F. E., Chrimes, A. A., Stern, D., Graham, M. J., Smartt, S. J., Smith, K. W., Ravasio, M. E., Zabludoff, A. I., Yue, M., Stoppa, F., Malesani, D. B., Stone, N. C., Wen, S.
Extragalactic fast X-ray transients (FXTs) are a class of soft (0.3-10 keV) X-ray transients lasting a few hundred seconds to several hours. Several progenitor mechanisms have been suggested to produce FXTs, including supernova shock breakouts, binar
Externí odkaz:
http://arxiv.org/abs/2312.10786
Autor:
Shvartzvald, Y., Waxman, E., Gal-Yam, A., Ofek, E. O., Ben-Ami, S., Berge, D., Kowalski, M., Bühler, R., Worm, S., Rhoads, J. E., Arcavi, I., Maoz, D., Polishook, D., Stone, N., Trakhtenbrot, B., Ackermann, M., Aharonson, O., Birnholtz, O., Chelouche, D., Guetta, D., Hallakoun, N., Horesh, A., Kushnir, D., Mazeh, T., Nordin, J., Ofir, A., Ohm, S., Parsons, D., Pe'er, A., Perets, H. B., Perdelwitz, V., Poznanski, D., Sadeh, I., Sagiv, I., Shahaf, S., Soumagnac, M., Tal-Or, L., Van Santen, J., Zackay, B., Guttman, O., Rekhi, P., Townsend, A., Weinstein, A., Wold, I.
The Ultraviolet Transient Astronomy Satellite (ULTRASAT) is scheduled to be launched to geostationary orbit in 2026. It will carry a telescope with an unprecedentedly large field of view (204 deg$^2$) and NUV (230-290nm) sensitivity (22.5 mag, 5$\sig
Externí odkaz:
http://arxiv.org/abs/2304.14482
A star tidally disrupted by a black hole can form an accretion disc with a super-Eddington mass accretion rate; the X-ray emission produced by the inner disc provides constraints on the black hole mass $M_\bullet$ and dimensionless spin parameter $a_
Externí odkaz:
http://arxiv.org/abs/2211.16936
We recently derived, using the density-of-states approximation, analytic distribution functions for the outcomes of direct single-binary scatterings (Stone & Leigh 2019). Using these outcome distribution functions, we present in this paper a self-con
Externí odkaz:
http://arxiv.org/abs/2205.15351
Autor:
Rizzuto, Francesco Paolo, Naab, Thorsten, Spurzem, Rainer, Giersz, Mirek, Ostriker, J. P., Stone, N. C., Wang, Long, Berczik, Peter, Rampp, M.
Young dense massive star clusters are a promising environment for the formation of intermediate mass black holes (IMBHs) through collisions. We present a set of 80 simulations carried out with Nbody6++GPU of 10 initial conditions for compact $\sim 7
Externí odkaz:
http://arxiv.org/abs/2008.09571
We present Chandra X-ray observations of four optically-selected tidal disruption events (TDEs) obtained 4-9 years after discovery. Three sources were detected with luminosities between 9X10^40 and 3X10^42 erg/s. The spectrum of PTF09axc is consisten
Externí odkaz:
http://arxiv.org/abs/1906.12236
The growing number of stellar-mass binary black hole mergers discovered by Advanced LIGO and Advanced Virgo are starting to constrain the binaries' origin and environment. However, we still lack sufficiently accurate modeling of binary formation chan
Externí odkaz:
http://arxiv.org/abs/1903.01405
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