Month: September 2022

APPROACHING DEATH. “It is likely that the WD will only experience one tidal nova before disruption. However, as the WD continues to inspiral, the tidal heating rate will increase steeply as a function of decreasing η. This strong dependence presents the possibility of multiple novae before disruption, which may produce a distinctive observational signature.” (WD = white dwarf). https://lnkd.in/djnsGi4 View in LinkedIn

UNKNOWN UNKNOWNS. “Future work is needed to understand how the absence of the hydrogen envelope would change the tidal effect at smaller pericentre distances.” https://lnkd.in/djnsGi4 View in LinkedIn

UMBERTO ECO’S THE INFINITY OF LISTS. “Profuse, plethoric, prolix, plentiful, playful, populous, picaresque, picturesque; copious, cornucopian, congested, clotted; incontinent, infested, infectious; omnivorous, orgiastic, odd; abundant, redundant; multifarious, multitudinous; glutted, gargantuan, inclusive, elusive, and...exhaustive." https://lnkd.in/gXa_rzg View in LinkedIn

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IMPLICATIONS. “Our study of tidal dissipation in eccentric WD–MBH binaries can be easily adapted to other problems. For instance, WD–WD binaries with extreme eccentricities may be produced in triple systems, which could lead to direct WD–WD collisions and Type Ia supernovae.” (WD = white dwarf; MBH = massive black hole). https://lnkd.in/djnsGi4 View in LinkedIn

VALIDATION OF MATHS. “In such WD–WD binaries, the physics of tidal dissipation studied in this paper can be directly applied, and equations (11)–(13) remain valid. In fact, the BH mass scales out if one expresses the pericentre distance in terms of the dimensionless parameter η.” (WD = white dwarf; BH = black hole). https://lnkd.in/djnsGi4 View in LinkedIn

FOOTNOTE. “The only difference is that the orbital evolution time-scale due to GR becomes longer and therefore tidal dissipation may contribute to the orbital evolution.” (GR = General Relativity theory). https://lnkd.in/djnsGi4 View in LinkedIn

LEGENDARY HERITAGE. “Quasars or quasi-stellar objects (QSOs) are highly luminous objects that are a class of active galactic nuclei (AGNs) powered by the accretion of matter from a disk onto the central supermassive black hole (SMBH).” https://lnkd.in/dhG6-RE View in LinkedIn

ENORMOUS SIZES. “While quasars have been observed at all redshifts up to z ~ 7.5, inferences of SMBH masses from luminous high redshift quasars (z > 6) can reach up to ~10(9)M⊙.” (SMBH = supermassive black hole). https://lnkd.in/dhG6-RE View in LinkedIn

THE OBJECTS OF DESIRE. “The progenitors of these extreme quasars, and the mechanism behind their immense rapid growth remain a topic of open active research and a stringent theoretical hurdle to overcome.” https://lnkd.in/dhG6-RE View in LinkedIn