Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the chaty domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Deprecated: Return type of Recursive_ArrayAccess::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 76

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Warning: Cannot modify header information - headers already sent by (output started at /home1/express/public_html/wp-includes/functions.php:6131) in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-emd-wp-session.php on line 134

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اختفاء ثقب أسود عملاق في ظروف غامضة - Algerian Express

اختفاء ثقب أسود عملاق في ظروف غامضة


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تأكد اختفاء ثقب أسود كتلته أكبر من كتلة الشمس بـ 3-100 مليار مرة في مجرة Abell 2261 التي تبعد عن الأرض 2.7 مليار سنة ضوئية، في ظروف غامضة، كان من المفترض وجوده في مركز المجرة.

ويشير موقع arxiv.org، إلى أن العلماء استخدموا في البداية مرصد شاندرا الفضائي للأشعة السينية في البحث عن مواد ساخنة، سقطت في الثقب الأسود تنبعث منها الأشعة السينية، ولكنهم لم يعثروا على أي شيء.
وحلل الباحثون في الدراسة الجديدة المزيد من البيانات، مع الأخذ بالاعتبار احتمال طرد الثقب الأسود من المجرة الأم، نتيجة اندماجها بمجرة ثانية. ومن المفترض نشوء ثقب أسود هائل نتيجة اندماج ثقبين، ما تتولد عنه موجة الجاذبية.

وقد لاحظ الباحثون وجود علامات غير مباشرة لاندماج ثقبين هائلين: أولا، نواة المجرة Abell 2261 أصبحت أكبر مما يتوقع لمجرة بهذا الحجم. وثانيا، المسافة من مركز المجرة إلى أقرب مجموعة كثيفة للنجوم تعادل حوالي ألفي سنة ضوئية. وهذه مسافة كبيرة تحدث عندما يبدأ ثقبان أسودان متقاربان في صد النجوم القريبة.

ولكن البيانات الجديدة مع المرصد شاندا، والمراقبة باستخدام التلسكوب الفضائي هابل، لم تكشف عن وجود الثقب الأسود نفسه. وهذا يمكن تفسيره، بأن الثقب الأسود يمتص المواد ببطء لذلك يبقى غير مرئي لعلماء الفلك، أو أنه “هرب” بعيدا عن مركز المجرة.

المصدر: لينتا. رو

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