Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars
Over the past several years, there has been enormous interest in massive neutron stars and white dwarfs due to either their direct or indirect evidence. The recent detection of gravitational wave event GW190814 has confirmed the existence of compact stars with masses as high as ∼2.5–2.67 <inline-...
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MDPI AG
2022-11-01
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| Online Access: | https://www.mdpi.com/2571-712X/5/4/37 |
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| author | Banibrata Mukhopadhyay Mukul Bhattacharya |
| author_facet | Banibrata Mukhopadhyay Mukul Bhattacharya |
| author_sort | Banibrata Mukhopadhyay |
| collection | DOAJ |
| description | Over the past several years, there has been enormous interest in massive neutron stars and white dwarfs due to either their direct or indirect evidence. The recent detection of gravitational wave event GW190814 has confirmed the existence of compact stars with masses as high as ∼2.5–2.67 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mo>⊙</mo></msub></semantics></math></inline-formula> within the so-called mass gap, indicating the existence of highly massive neutron stars. One of the primary goals to invoke massive compact objects was to explain the recent detections of over a dozen Type Ia supernovae, whose peculiarity lies with their unusual light curve, in particular the high luminosity and low ejecta velocity. In a series of recent papers, our group has proposed that highly magnetised white dwarfs with super-Chandrasekhar masses can be promising candidates for the progenitors of these peculiar supernovae. The mass-radius relations of these magnetised stars are significantly different from those of their non-magnetised counterparts, which leads to a revised super-Chandrasekhar mass-limit. These compact stars have wider ranging implications, including those for soft gamma-ray repeaters, anomalous X-ray pulsars, white dwarf pulsars and gravitational radiation. Here we review the development of the subject over the last decade or so, describing the overall state of the art of the subject as it stands now. We mainly touch upon the possible formation channels of these intriguing stars as well as the effectiveness of direct detection methods. These magnetised stars can have many interesting consequences, including reconsideration of them as possible standard candles. |
| first_indexed | 2024-03-09T16:00:20Z |
| format | Article |
| id | doaj.art-6a9ce7fa77754e0f8118d564d89570e6 |
| institution | Directory Open Access Journal |
| issn | 2571-712X |
| language | English |
| last_indexed | 2024-03-09T16:00:20Z |
| publishDate | 2022-11-01 |
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| series | Particles |
| spelling | doaj.art-6a9ce7fa77754e0f8118d564d89570e62023-11-24T17:11:48ZengMDPI AGParticles2571-712X2022-11-015449351310.3390/particles5040037Formation, Possible Detection and Consequences of Highly Magnetized Compact StarsBanibrata Mukhopadhyay0Mukul Bhattacharya1Department of Physics, Indian Institute of Science, Bangalore 560012, IndiaDepartment of Physics, The Pennsylvania State University, State College, PA 16802, USAOver the past several years, there has been enormous interest in massive neutron stars and white dwarfs due to either their direct or indirect evidence. The recent detection of gravitational wave event GW190814 has confirmed the existence of compact stars with masses as high as ∼2.5–2.67 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mo>⊙</mo></msub></semantics></math></inline-formula> within the so-called mass gap, indicating the existence of highly massive neutron stars. One of the primary goals to invoke massive compact objects was to explain the recent detections of over a dozen Type Ia supernovae, whose peculiarity lies with their unusual light curve, in particular the high luminosity and low ejecta velocity. In a series of recent papers, our group has proposed that highly magnetised white dwarfs with super-Chandrasekhar masses can be promising candidates for the progenitors of these peculiar supernovae. The mass-radius relations of these magnetised stars are significantly different from those of their non-magnetised counterparts, which leads to a revised super-Chandrasekhar mass-limit. These compact stars have wider ranging implications, including those for soft gamma-ray repeaters, anomalous X-ray pulsars, white dwarf pulsars and gravitational radiation. Here we review the development of the subject over the last decade or so, describing the overall state of the art of the subject as it stands now. We mainly touch upon the possible formation channels of these intriguing stars as well as the effectiveness of direct detection methods. These magnetised stars can have many interesting consequences, including reconsideration of them as possible standard candles.https://www.mdpi.com/2571-712X/5/4/37neutron starswhite dwarfsmagnetic fieldsmagnetohydrodynamicsgeneral relativityradiative transfer |
| spellingShingle | Banibrata Mukhopadhyay Mukul Bhattacharya Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars Particles neutron stars white dwarfs magnetic fields magnetohydrodynamics general relativity radiative transfer |
| title | Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars |
| title_full | Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars |
| title_fullStr | Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars |
| title_full_unstemmed | Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars |
| title_short | Formation, Possible Detection and Consequences of Highly Magnetized Compact Stars |
| title_sort | formation possible detection and consequences of highly magnetized compact stars |
| topic | neutron stars white dwarfs magnetic fields magnetohydrodynamics general relativity radiative transfer |
| url | https://www.mdpi.com/2571-712X/5/4/37 |
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