Введение
Базилис К. Ксантопулос (также Василис; Βασίλης Κ. Ξανθόπουλος; 8 апреля 1951 – 27 ноября 1990) – греческий физик-теоретик, получивший известность в области общей теории относительности благодаря своим работам по исследованию сталкивающихся плоских волн.
Basilis C. Xanthopoulos (also Vasilis; Βασίλης Κ. Ξανθόπουλος; 8 April 1951 – 27 November 1990) was a Greek theoretical physicist, well known in the field of general relativity for his contributions to the study of colliding plane waves.
Ранние годы
Базилис Ксантопулос родился в Драме. Он преуспел в средней школе, продемонстрировав выдающиеся аналитические способности в физике и математике. В 1969 году он был удостоен первого приза в национальном математическом конкурсе, организованном Греческим математическим обществом, и в том же году поступил на факультет математики Университета Салоники с наивысшим баллом среди всех студентов Греции. Через четыре года он также окончил факультет первым в своем классе, а после того, как набрал в верхнем 1% на GRE, был принят в аспирантуру по физике в Чикагский университет. Он переехал в Чикаго в декабре 1974 года и получил степень доктора философии 30 мая 1978 года под руководством профессора Роберта Героха. Название его диссертации: «Точные вакуумные решения уравнения Эйнштейна, полученные из линеаризованных решений». В этот период он начал тесное и плодотворное сотрудничество с Субрахманьяном Чандрасекаром, который фактически был его соруководителем и стал близким другом и наставником на всю жизнь. Чандрасекар, получивший Нобелевскую премию по физике в 1983 году, несколько раз посещал Крит в середине и конце 1980-х годов для совместной работы с Ксантопулосом и в 1991 году в журнале Current Science отметил: «Мое сотрудничество с Базилисом – самое значимое за все мои шестьдесят лет научной деятельности».
Академическая карьера
После защиты диссертации Ксантопулос переехал в качестве приглашенного ассистент-профессора в Департамент физики Университета штата Монтана, где работал до июня 1979 года, а затем продолжил работу постдоком в Сиракузском университете. В декабре 1979 года он вернулся в качестве главного ассистента на физический факультет Университета Фессалоники. 29 ноября 1982 года он перешел на преподавательскую работу в новообразованный Департамент физики Университета Крита, где прошел все ступени и в 1987 году стал полным профессором. Он занимал должность заведующего кафедрой с 1987 года до момента своего убийства вечером 27 ноября 1990 года. Он был застрелен вместе со своим коллегой Стефаносом Пневматикосом во время проведения семинара 32-летним психически неуравновешенным и озлобленным Джоргосом Петродаскалакисом, который впоследствии покончил жизнь самоубийством.
Научные исследования
Ксантопулос внес вклад в ряд областей математической физики и общей теории относительности. В частности, он работал над:
Asymptotic structure of spacetime. This is a research field in which he was influenced by the supervisor R. Geroch and his works (in collaboration with A. Ashtekar, C. Hoenselaers, W. Kinnerslay);
Creation of "anomalies" in space time by colliding gravitational waves. It was one of the two pillars of his collaboration mainly with Chandrashekhar, which models two gravitational plane waves which collide, interact nonlinearly, and create in the interaction zone a curved region of spacetime which is locally isometric to the Kerr vacuum. This is now called the 'Chandrasekhar–Xanthopoulos colliding plane wave model;
Disorders of spacetime (mainly Reissner Nordstrom). This is the second pillar of his collaboration with Chandrashekhar and his work has characterized the field. They were an important part of the book "The Mathematical Theory of Black Holes" by Chandrashekhar in 1983;
Cosmic Strings. In the 80's Xanthopoulos also dealt with mathematical issues concerning the cosmic strings, concerning the period when he worked in Crete;
Scalar fields, a very important topic in gravitational physics. Xanthopoulos contributed in this direction in collaboration with V. Ferrari, on the possibility of black holes to support the existence of scalar fields. The complete list of his publications is available from NASA/ADS here, while his Google Scholar profile is available here.
Асимптотической структурой пространства-времени. Это область исследований, на которую оказал влияние его научный руководитель Р. Герох и его работы (в сотрудничестве с А. Аштекаром, С. Хоенселяром, В. Киннерслеем);
Asymptotic structure of spacetime. This is a research field in which he was influenced by the supervisor R. Geroch and his works (in collaboration with A. Ashtekar, C. Hoenselaers, W. Kinnerslay);
Creation of "anomalies" in space time by colliding gravitational waves. It was one of the two pillars of his collaboration mainly with Chandrashekhar, which models two gravitational plane waves which collide, interact nonlinearly, and create in the interaction zone a curved region of spacetime which is locally isometric to the Kerr vacuum. This is now called the 'Chandrasekhar–Xanthopoulos colliding plane wave model;
Disorders of spacetime (mainly Reissner Nordstrom). This is the second pillar of his collaboration with Chandrashekhar and his work has characterized the field. They were an important part of the book "The Mathematical Theory of Black Holes" by Chandrashekhar in 1983;
Cosmic Strings. In the 80's Xanthopoulos also dealt with mathematical issues concerning the cosmic strings, concerning the period when he worked in Crete;
Scalar fields, a very important topic in gravitational physics. Xanthopoulos contributed in this direction in collaboration with V. Ferrari, on the possibility of black holes to support the existence of scalar fields. The complete list of his publications is available from NASA/ADS here, while his Google Scholar profile is available here.
Созданием "аномалий" в пространстве-времени посредством столкновения гравитационных волн. Это был один из двух основных направлений его сотрудничества, главным образом с Чандрашехаром, в рамках которого моделировались две гравитационные плоские волны, сталкивающиеся, нелинейно взаимодействующие и создающие в зоне взаимодействия искривленную область пространства-времени, локально изметричную вакууму Керра. В настоящее время это известно как модель столкновения плоских волн Чандрасекара — Ксантопулоса;
Asymptotic structure of spacetime. This is a research field in which he was influenced by the supervisor R. Geroch and his works (in collaboration with A. Ashtekar, C. Hoenselaers, W. Kinnerslay);
Creation of "anomalies" in space time by colliding gravitational waves. It was one of the two pillars of his collaboration mainly with Chandrashekhar, which models two gravitational plane waves which collide, interact nonlinearly, and create in the interaction zone a curved region of spacetime which is locally isometric to the Kerr vacuum. This is now called the 'Chandrasekhar–Xanthopoulos colliding plane wave model;
Disorders of spacetime (mainly Reissner Nordstrom). This is the second pillar of his collaboration with Chandrashekhar and his work has characterized the field. They were an important part of the book "The Mathematical Theory of Black Holes" by Chandrashekhar in 1983;
Cosmic Strings. In the 80's Xanthopoulos also dealt with mathematical issues concerning the cosmic strings, concerning the period when he worked in Crete;
Scalar fields, a very important topic in gravitational physics. Xanthopoulos contributed in this direction in collaboration with V. Ferrari, on the possibility of black holes to support the existence of scalar fields. The complete list of his publications is available from NASA/ADS here, while his Google Scholar profile is available here.
Нарушениями структуры пространства-времени (в основном Райсснера — Нордстрёма). Это второе основное направление его сотрудничества с Чандрашехаром, и его работы определили развитие этой области. Они занимали важное место в книге Чандрашехара "Математическая теория черных дыр", опубликованной в 1983 году;
Asymptotic structure of spacetime. This is a research field in which he was influenced by the supervisor R. Geroch and his works (in collaboration with A. Ashtekar, C. Hoenselaers, W. Kinnerslay);
Creation of "anomalies" in space time by colliding gravitational waves. It was one of the two pillars of his collaboration mainly with Chandrashekhar, which models two gravitational plane waves which collide, interact nonlinearly, and create in the interaction zone a curved region of spacetime which is locally isometric to the Kerr vacuum. This is now called the 'Chandrasekhar–Xanthopoulos colliding plane wave model;
Disorders of spacetime (mainly Reissner Nordstrom). This is the second pillar of his collaboration with Chandrashekhar and his work has characterized the field. They were an important part of the book "The Mathematical Theory of Black Holes" by Chandrashekhar in 1983;
Cosmic Strings. In the 80's Xanthopoulos also dealt with mathematical issues concerning the cosmic strings, concerning the period when he worked in Crete;
Scalar fields, a very important topic in gravitational physics. Xanthopoulos contributed in this direction in collaboration with V. Ferrari, on the possibility of black holes to support the existence of scalar fields. The complete list of his publications is available from NASA/ADS here, while his Google Scholar profile is available here.
Космическими струнами. В 80-х годах Ксантопулос также занимался математическими аспектами, связанными с космическими струнами, в период работы на Крите;
Asymptotic structure of spacetime. This is a research field in which he was influenced by the supervisor R. Geroch and his works (in collaboration with A. Ashtekar, C. Hoenselaers, W. Kinnerslay);
Creation of "anomalies" in space time by colliding gravitational waves. It was one of the two pillars of his collaboration mainly with Chandrashekhar, which models two gravitational plane waves which collide, interact nonlinearly, and create in the interaction zone a curved region of spacetime which is locally isometric to the Kerr vacuum. This is now called the 'Chandrasekhar–Xanthopoulos colliding plane wave model;
Disorders of spacetime (mainly Reissner Nordstrom). This is the second pillar of his collaboration with Chandrashekhar and his work has characterized the field. They were an important part of the book "The Mathematical Theory of Black Holes" by Chandrashekhar in 1983;
Cosmic Strings. In the 80's Xanthopoulos also dealt with mathematical issues concerning the cosmic strings, concerning the period when he worked in Crete;
Scalar fields, a very important topic in gravitational physics. Xanthopoulos contributed in this direction in collaboration with V. Ferrari, on the possibility of black holes to support the existence of scalar fields. The complete list of his publications is available from NASA/ADS here, while his Google Scholar profile is available here.
Скалярными полями – важнейшей темой в гравитационной физике. Ксантопулос внес вклад в это направление в сотрудничестве с В. Феррари, исследуя возможность существования скалярных полей, поддерживаемых черными дырами. Полный список его публикаций доступен в NASA/ADS здесь, а его профиль в Google Scholar – здесь.
Asymptotic structure of spacetime. This is a research field in which he was influenced by the supervisor R. Geroch and his works (in collaboration with A. Ashtekar, C. Hoenselaers, W. Kinnerslay);
Creation of "anomalies" in space time by colliding gravitational waves. It was one of the two pillars of his collaboration mainly with Chandrashekhar, which models two gravitational plane waves which collide, interact nonlinearly, and create in the interaction zone a curved region of spacetime which is locally isometric to the Kerr vacuum. This is now called the 'Chandrasekhar–Xanthopoulos colliding plane wave model;
Disorders of spacetime (mainly Reissner Nordstrom). This is the second pillar of his collaboration with Chandrashekhar and his work has characterized the field. They were an important part of the book "The Mathematical Theory of Black Holes" by Chandrashekhar in 1983;
Cosmic Strings. In the 80's Xanthopoulos also dealt with mathematical issues concerning the cosmic strings, concerning the period when he worked in Crete;
Scalar fields, a very important topic in gravitational physics. Xanthopoulos contributed in this direction in collaboration with V. Ferrari, on the possibility of black holes to support the existence of scalar fields. The complete list of his publications is available from NASA/ADS here, while his Google Scholar profile is available here.